HCPCSlevel2 Image Gray513.png thumb right The carotid artery is the large vertical artery in red. The blood supply to the common carotid artery starts at the arch of the aorta left or the subclavian artery right . The common carotid artery divides into the internal carotid artery and the external carotid artery. Plaque often builds up at that division, and a carotidendarterectomy cuts open the artery and removes the plaque. Image Carotid Plaque.jpg thumb right Section of carotid artery with plaque. Blood flows from the common carotid artery bottom , and divides into the internal carotid artery left and external carotid artery right . The atherosclerotic plaque is the dark mass on the left, which would be removed in an endarterectomy. Carotidendarterectomy CEA is a surgery surgical ... Atherosclerosis Study ACAS . Endarterectomy for asymptomatic carotid artery stenosis. Jama. 1995 ... of disabling and fatal strokes by successful carotidendarterectomy in patients without recent ... full 2008 1009 1 Carotid Stenting vs. Endarterectomy Longer Term Outcomes JournalWatch General Medicine ... of Carotid Stenting and Endarterectomy Results From the SVS Vascular Registry , Sidawy AN, Zwolak ... for Vascular Surgery. J Vasc Surg 2009 49 71 9. ref The Carotid Revascularization Endarterectomy ... PIIS0140 6736 10 60239 5 fulltext Carotid artery stenting compared with endarterectomy in patients ..., known as carotid stenting , was non inferior to carotidendarterectomy in total adverse ... carotid artery stenting versus endarterectomy in high risk patients journal N. Engl. J. Med. volume ... CarotidEndarterectomy Trial NASCET and the European Carotid Surgery Trial ECST are both large randomized class 1 studies which have helped define current indications for carotidendarterectomy. The NASCET ... CarotidEndarterectomy Trial Collaborators journal The New England Journal of Medicine volume 339 ... links Vascular surgery procedures DEFAULTSORT CarotidEndarterectomy Category Vascular surgery Category ... more details
Interventions infobox Name PAGENAME Image Caption ICD10 ICD9 ICD9proc 38.1 MeshID D004691 OtherCodes Endarterectomy is a surgical procedure to remove the atheroma atheromatous plaque material, or blockage, in the lining of an artery constricted by the buildup of soft hardening deposits. It is carried out by separating the plaque from the arterial wall. It was first performed on a superficial femoral artery in 1946 by the Portuguese surgeon Jo o Cid dos Santos at the University of Lisbon . In 1951, E. J. Wylie, an American, performed it on the abdominal aorta . The first successful reconstruction of the carotid artery was performed by Carrea, Molins, and Murphy in Argentina, later in the same year. ref http stroke.ahajournals.org cgi content full 27 8 1427 Thompson, Jesse E., The Evolution of Surgery for the Treatment and Prevention of Stroke retrieved on 2007 04 24 ref The procedure is widely used on the carotid artery of the neck as a way to reduce the risk of cerebrovascular accident stroke , particularly when the carotid artery is narrowed by more than 70 . A carotid endarterectomy may itself cause a stroke at the time of operation. Endarterectomy is also used as a supplement to a vein bypass graft to open up distal segments. Pulmonary hypertension caused by chronic thromboembolic disease CTEPH may be amenable to endarterectomy of the pulmonary artery . This is a highly specialized procedure. The term atherectomy is used to describe reconstruction through a catheter . See also Pulmonary thromboendarterectomy References references External links MeshName Endarterectomy http www.springerlink.com content f0h55146r42q776l Connolly, John E. and Price, Thaine, Aortoiliac Endarterectomy A Lost Art? , 2005 abstract treatment stub Vascular procedures Category Vascular surgery de Endarteriektomie ... more details
s and transient ischemic attack s, carotidendarterectomycarotid endarterectomies are frequently done for prophylaxis . The carotid sinus can be oversensitive to manual stimulation, a condition known as carotid sinus hypersensitivity , carotid sinus syndrome or carotid sinus syncope , in which manual stimulation causes large changes in heart rate and or blood pressure . Carotid sinus syndrome ...Infobox Anatomy Name Carotid sinus Latin sinus caroticus GraySubject GrayPage Image Gray513.png Caption Arteries of the neck. The carotid sinus is at the origin of the internal carotid artery . Image2 Caption2 Precursor System Artery Vein Nerve branch of glossopharyngeal nerve to carotid sinus Lymph MeshName Carotid Sinus MeshNumber A07.231.114.186.456 DorlandsPre s 12 DorlandsSuf 12738619 In human anatomy , the carotid sinus is a localized dilation of the internal carotid artery at its origin, the common carotid artery . Functions Unreferenced section date February 2009 The carotid sinus contains ... for maintaining blood pressure . The carotid sinus baroreceptors are innervated by the sinus ... Nerve of Cyon , which combines with CN X vagus nerve and travels to the NTS. Disease of the carotid sinus This section is linked from Swimming The carotid sinus often has atherosclerotic plaque s because ... of the carotid sinus reflex when pressure builds in one or both carotid sinuses. Carotid sinus massage Massage of the carotid sinus, carotid sinus massage is used to diagnose carotid sinus syncope ... WS, Goh PP, Tan AT. Comparison of treatment of supraventricular tachycardia by Valsalva maneuver and carotid ... Life Support Provider Manual 2007 . ref Carotid sinus reflex death Carotid sinus reflex death is a disputed mechanism of death in which manual stimulation of the carotid sinus allegedly causes strong ... cardiac arrest . Carotid sinus reflex death has been pointed out as a possible cause of death in cases ... that the carotid sinus reflex can be a contributing factor in other mechanisms of death by reducing ... more details
up between surgery and carotid stenting when counting all three, but carotidendarterectomy CEA .... Endarterectomy Versus Angioplasty in Patients with Symptomatic Severe Carotid Stenosis EVA 3S trial ... J, Feinberg WM, Castaldo JE, et al. title Guidelines for carotidendarterectomy a statement for healthcare ... 39.90 , MeshID OPS301 OtherCodes HCPCSlevel2 Carotid artery stenting CAS is an endovascular, Stent catheter based procedure which unblocks narrowings of the carotid artery lumen to prevent a stroke. Carotid artery stenosis can present with no symptoms diagnosed incidentally or with symptoms such as transient ... reported results in symptomatic carotid artery stenosis patients comparing surgery and stenting. A major ... of symptomatic carotid artery disease. A study was carried out in seven of the centers participating ... questioned the ethics and validity of European trials comparing a mature carotid surgical procedure to carotid stenting performed by inexperienced physicians ref http www.thelancet.com journals laneur ... basis and were then permitted to enroll patients once their expertise in the carotid stent procedure ... performed to confirm suitability to continue Carotid and cerebral angiogram performed Long access sheath placed after cannulation of common carotid artery CCA Guidewire passed through area of carotid narrowing Placement of embolic protection device above the area of narrowing Angioplasty of carotid narrowing, but more commonly proceed straight to deployment of stent into area of narrowing ... of groin puncture site Indications Carotid stenting is the preferred therapy for patients who are at an increased risk with carotid surgery. High risk factors include medical comorbidities severe heart disease, heart failure, severe lung disease, age 75 80, etc and anatomic features contralateral carotid occlusion, radiation therapy to the neck, prior ipsilateral carotid artery surgery, intra thoracic or intracranial carotid disease that make surgery difficult or risky ref Gurm HS, Yadav JS, Fayad ... more details
Carotid plexus can refer to Common carotid plexus Internal carotid plexus External carotid plexus disambig Long comment to avoid being listed on short pages ... more details
Carotid ultrasonography is an ultrasound based diagnostic imaging technique to reveal structural details of the carotid arteries , so as to look for blood clot s, atherosclerotic plaque buildup, and other blood flow problems. ref http www.nlm.nih.gov medlineplus ency article 003774.htm MedlinePlus Carotid duplex Update Date 5 12 2009. Updated by Benjamin Taragin M.D ref A carotid duplex is a carotid ultrasonography carried out by duplex ultrasonography . A duplex carotid ultrasound may include a Doppler ultrasound, a special test able to reveal the movement of blood cells through the carotid arteries. See also Medical ultrasonography http www.nhlbi.nih.gov health dci Diseases cu cu whatis.html What Is Carotid Ultrasound? by NHLBI References reflist Medical imaging Vascular procedures Category Medical ultrasound medicine stub ... more details
Carotid artery can refer to Common carotid artery External carotid artery Internal carotid artery SIA Short pages monitor This long comment was added to the page to prevent it being listed on Special Shortpages. It and the accompanying monitoring template were generated via Template Longcomment. Please do not remove the monitor template without removing the comment as well. ru te ... more details
Infobox Bone Name Carotid groove Latin sulcus caroticus ossis sphenoidalis GraySubject 35 GrayPage 148 Image Gray145.png Caption Sphenoid bone . Upper surface. Carotid groove visible at left center. Image2 Gray193.png Caption2 Base of the skull. Upper surface. Sphenoid bone is in yellow, and carotid groove is labeled at center of sphenoid. System MeshName MeshNumber DorlandsPre g 12 DorlandsSuf 12402464 Above the attachment of each great wing of the sphenoid bone is a broad groove, curved something like the italic letter f it lodges the internal carotid artery and the cavernous sinus , and is named the carotid groove . External links RocheLexicon 34257.000 2 Gray s Skull Category Bones of the head and neck musculoskeletal stub hu Sulcus caroticus ossis sphenoidalis ... more details
Infobox Anatomy Name Carotid sheath Latin vagina carotica fasciae cervicalis GraySubject 111 GrayPage 389 Image Carotid sheath.PNG Caption Section of the neck at about the level of the sixth cervical vertebra. Showing the arrangement of the fascia coli. Carotid sheath is labeled in red. Image2 Caption2 System MeshName MeshNumber DorlandsPre v 01 DorlandsSuf 12842562 The carotid sheath is an anatomical term for the fibrous connective tissue that surrounds the vascular compartment of the neck. It is part of the deep cervical fascia of the neck, below the superficial cervical fascia meaning the subcutaneous adipose tissue immediately beneath the skin. The deep cervical fascia of the neck includes four parts The investing layer encloses the SCM and Trapezius The carotid sheath encloses the vascular region of the neck The pretracheal fascia encloses the visceral region of the neck The prevertebral fascia encloses the vertebral region of the neck Structure The carotid sheath is located at the lateral boundary of the retropharyngeal space at the level of the oropharynx on each side of the neck and deep to the sternocleidomastoid muscle , extending from the base of the Human skull skull to the first rib and Human sternum sternum . Contents The four major structures contained in the carotid sheath are the common carotid artery as well as the internal carotid artery internal jugular vein the vagus nerve CN X the deep cervical lymph nodes . The carotid artery lies medial to the internal jugular vein, and the vagus nerve is situated posteriorly between the two vessels. In the upper part, the carotid sheath also contains the glossopharyngeal nerve IX , the accessory nerve XI , and the hypoglossal nerve XII , which pierce the fascia of the carotid sheath. The ansa cervicalis is embedded in the anterior wall of sheath. It is formed by descendens hypoglossi C1 and descendens cervicalis C2 C3 . Layers The three major fascial layers in the neck contribute to the carotid sheath the investing ... more details
SignSymptom infobox Name Carotid bruit Image MurmurO.ogg Caption Carotid bruit in a gentleman with a 70 stenosis of his left carotid artery. DiseasesDB 29151 ICD10 ICD10 R 01 1 r 00 ICD9 ICD9 785.9 ICDO OMIM MedlinePlus eMedicineSubj eMedicineTopic MeshID A carotid bruit is a systolic sound heard over the carotid artery area during auscultation . Associated conditions It may occur as the result of carotid artery stenosis ref name pmid13768297 cite journal author MATTHEWS WB title Observations on the carotid bruit journal J. Neurol. Neurosurg. Psychiatr. volume 24 issue pages 161 6 year 1961 month May pmid 13768297 pmc 495382 doi 10.1136 jnnp.24.2.161 url http jnnp.bmj.com cgi pmidlookup?view long&pmid 13768297 ref though some disagree ref name pmid18368873 cite journal author Mayock R title Does a carotid bruit predict cerebrovascular complications following noncardiac surgery in asymptomatic patients? journal Cleve Clin J Med volume 74 Suppl 1 issue pages S18 9 year 2007 month September pmid 18368873 doi url http www.ccjm.org cgi pmidlookup?view long&pmid 18368873 ref however, most carotid bruits, particularly those found in younger or asymptomatic patients, are not related to any disease and are termed innocent carotid bruits . ref Bates Guide to Physical Examination and History Taking, 9th Ed, Chapter 20 ref A carotid bruit is unlikely to be heard if the stenosis occludes less than 40 of the diameter of the artery. Likewise, a stenosis of greater than 90 may not be heard, as the flow may be too low. Citation needed date June 2009 Many carotid bruits are discovered incidentally in an otherwise asymptomatic patient. The presence of a carotid bruit alone does not necessarily indicate the presence of stenosis, and the physical examination cannot be used to estimate the degree of stenosis, if present therefore, any bruit must be evaluated by ultrasound or imaging. ref name DeGowin DeGowin s Diagnostic Examination, 9th Edition, Chapter 8 Richard F. LeBlond, Donald D. Brown ... more details
Infobox Bone Name Carotid canal Latin canalis caroticus GraySubject 34 GrayPage 143 Image Gray141.png Caption Left temporal bone . Inferior surface. Opening of carotid canal labeled at center left. Image2 Caption2 System MeshName MeshNumber DorlandsPre c 04 DorlandsSuf 12208545 On the interior surface of the temporal bone , behind the rough surface of the apex, is the large circular aperture of the carotid canal , which ascends at first vertically, and then, making a bend, runs horizontally forward and medialward. Contents It transmits into the human cranium cranium , the internal carotid artery , and the carotid plexus of nerves. Sympathetics to the head also pass through the carotid canal. They have several motor functions raise the eyelid superior tarsal muscle , dilate pupil , innervate sweat glands of face and scalp and constricts blood vessels in head. Additional images gallery Image Gray191.png Horizontal section of nasal and orbital cavities. Image Gray913.png Coronal section of right temporal bone. gallery External links UMichAtlas n3a8p1 RocheLexicon 34257.000 1 http bio.winona.edu dapkus 211 Skeletal images Skull inffor2.jpg Photo at Winona.edu Gray s Skull Foramina of skull Category Foramina of the skull de Canalis caroticus hu Canalis caroticus pl Kana t tnicy szyjnej pt Canal car tico ... more details
Unreferenced stub auto yes date December 2009 Infobox Anatomy Name PAGENAME Latin tuberculum caroticum GraySubject GrayPage Image Caption Image2 Caption2 Precursor System Artery Vein Nerve Lymph MeshName MeshNumber Code A02.2.02.005 Chassaignac tubercle or the carotid tubercle is the name given to the anterior tubercle anatomy tubercle of the transverse process of the sixth cervical vertebra , separating the carotid artery from the vertebral artery and against which the carotid artery may be compressed by the finger. It is named for Charles Marie Edouard Chassaignac Charles Marie douard Chassaignac , France French doctor. Applied aspect in case of supraventricular tachycardia,the carotid artery can be massaged against this tubercle to relieve from the symptoms. The Chassaignac tubercle is used as a landmark by anesthesiologist s for local anesthesia of the brachial plexus and the cervical plexus using the supraclavicular approach. DEFAULTSORT Chassaignac Tubercle Category Thorax Musculoskeletal stub Bones of torso id Tuberculum Chassaignac uk ... more details
carotid are also met with in this space the superior thyroid artery , running forward and downward ... carotid. Veins The veins met with are the internal jugular , which lies on the lateral side of the common and internal carotid arteries and veins corresponding to the above mentioned branches of the external carotid viz., the superior thyroid vein , the lingual veins , common facial , ascending ... The nerves in this space are the following. In front of the sheath of the common carotid is the ramus ... and on the medial side of the external carotid , just below the hyoid bone , the internal ... are also found in the front part of this space. See also Anterior triangle of the neck Carotid triangle ... more details
Infobox Anatomy Name Carotid body Latin glomus caroticum GraySubject 277 GrayPage 1281 Image Gray1186.png ... branches of the carotid arteries. Precursor System Artery Vein Nerve Lymph MeshName MeshNumber DorlandsPre g 07 DorlandsSuf 12394794 The carotid body carotid glomus or glomus caroticum is a small cluster of chemoreceptor s and supporting cells located near the fork bifurcation of the carotid artery which runs along both sides of the throat . The carotid body detects changes in the composition ... dioxide . Furthermore, it is also sensitive to changes in pH and temperature . Composition The carotid ... cite journal author Gonzalez C, Almaraz L, Obeso A, Rigual R title Carotid body chemoreceptors ... resemble Glial cell glia , express the glial marker S100 and act as supporting cells. The carotid ... as much as the carotid body. Function The carotid body functions as a sensor it responds to a stimulus ... are highly sensitive to CO sub 2 sub the carotid body is a peripheral chemoreceptor that mainly ..., the carotid body also senses increases in CO sub 2 sub partial pressure and decreases in arterial pH, but to a lesser degree than for O sub 2 sub The output of the carotid bodies is low at an oxygen ... SH, Prabhakar NR. 2010 . H2S mediates O2 sensing in the carotid body PNAS 107 23 10719 10724. doi .... Haem reversibly binds O sub 2 sub with an affinity similar to that of the carotid body ... lead to membrane depolarisation and consequence activation of the carotid body. ref name ... hypoxia. AMPK has a number of targets and it appears that, in the carotid body, when AMPK is activated ... CAROTID BODY EXCITATION BY HYPOXIA journal J Biol Chem. volume 282 issue 11 pages 8092 8 year 2007 ... I glomus cells in the carotid and aortic bodies are derived from neuroectoderm and are thus electrically ... to the glomus cell to cause an action potential. Relay The feedback from the carotid body is sent ... nerve . These centers, in turn, regulate breathing and blood pressure. Disorders Image Carotid body ... more details
of risk factors for atherosclerosis Medical management plus carotidendarterectomy or carotid ... carotidendarterectomy or carotid stenting can cause stroke, however where the risk of stroke from ... with asymptomatic severe carotid artery stenosis, carotidendarterectomy by selected surgeons ... centers, carotidendarterectomy is associated with a 30 day stroke or mortality rate of about ... endarterectomy urgently, since the greatest risk of stroke is within days. Carotidendarterectomy ... risk of stroke of about 1 2 per year. Carotidendarterectomy has a surgical risk of stroke or death of about 2 4 in the best institutions. Carotidendarterectomy reduced major stroke and death ... NEJMoa0912321 ref A 2010 study found benefits reduced strokes from carotidendarterectomy in those .... title 10 year stroke prevention after successful carotidendarterectomy for asymptomatic stenosis ACST ...Infobox disease Name Carotid artery stenosis Image Gray513.png Caption The carotid artery is the large vertical artery in red. The blood supply to the carotid artery starts at the arch of the aorta bottom . The carotid artery divides into the internal carotid artery and the external carotid artery . The internal carotid artery supplies the brain. Plaque often builds up at that division, and causes ..., which causes a stroke . Plaque can also build up at the origin of the carotid artery at the aorta ... MeshID D016893 Carotid stenosis is a narrowing or constriction of the inner surface lumen anatomy lumen of the carotid artery , usually caused by atherosclerosis . Signs and symptoms The carotid ... side it starts from the brachiocephalic trunk a branch of the aorta as the common carotid artery, and on the left side the common carotid artery comes directly off the aortic arch. At the throat it forks into the internal and external carotid arteries. The internal carotid artery supplies the brain, and the external carotid artery supplies the face. This fork is a common site for atherosclerosis ... more details
carotid artery CarotidendarterectomyCarotid sinus Carotid body Carotid sheath Carotid triangle ...Infobox Artery Name Internal carotid artery Latin arteria carotis interna GraySubject 146 GrayPage 566 Width 250 Image Gray513.png Caption Arteries of the neck. The internal carotid arteries arise from the common carotid artery common carotid arteries labeled Common caroti on the figure. Image2 Caption2 BranchFrom common carotid artery BranchTo ophthalmic artery , anterior choroidal artery , anterior ... Precursor Aortic arches aortic arch 3 Supplies MeshName Carotid Artery, Internal MeshNumber A07.231.114.186.200.230 Dorlands one 000008499 DorlandsID Internal carotid artery In human anatomy , the internal carotid arteries are two major arteries , one on each side of the head and neck. They arise from the common carotid arteries where these bifurcate into the internal and external carotid artery ... ica.htm ref ref DorlandsDict one 000008499 Internal carotid artery ref However, in clinical settings, the classification system of the internal carotid artery follows the 1996 recommendations by Bouthillier ... Harry van Loveren, Jefferey Keller year 1996 month March title Segments of the internal carotid artery ... 00006123 199603000 00001 ref and describes seven anatomical segments of the internal carotid artery ... schemes based on the embryologic anatomy of the carotid artery. File Circle of Willis 5.jpg thumb 300px Internal carotid artery The segments of the internal carotid artery are as follows Cervical segment , or C1, identical to the commonly used Cervical part of internal carotid artery ... Petrous portion of the internal carotid artery Petrous portion Cavernous segment , or C4, almost identical to the commonly used Cavernous part of internal carotid artery Cavernous portion Clinoid segment ... used Cavernous part of internal carotid artery Cavernous portion and Cerebral portion of internal carotid artery Cerebral or Supraclinoid portion Ophthalmic , or supraclinoid segment, or C6 ... more details
Infobox Nerve Name Internal carotid plexus Latin plexus caroticus internus GraySubject 215 GrayPage 977 Image Gray840.png Caption Sympathetic connections of the ciliary and superior cervical ganglia. Carotid plexus visible center top. Image2 Gray844.png Caption2 Diagram of the cervical sympathetic. Carotid plexus visible center top. Innervates BranchFrom BranchTo MeshName MeshNumber DorlandsPre p 24 DorlandsSuf 12647616 The internal carotid plexus carotid plexus is situated on the lateral side of the internal carotid artery , and in the plexus there occasionally exists a small gangliform swelling, the carotid ganglion , on the under surface of the artery. Postganglionic sympathetic fibres ascend from the superior cervical ganglion, along the walls of the internal carotid artery, to enter the internal carotid plexus. These fibres then distribute to deep structures, which include the Superior Tarsal Muscle and pupillary dilator muscles. ref Hal Blumenfeld, Neuroanatomy through Clinical Cases , Sinauer Associates, 2002, p543 ref Some of the fibres from the internal carotid plexus converge to form the deep petrosal nerve. ref Richard L. Drake, Wayne Vogel & Adam W M Mitchell, Gray s Anatomy for Students , Elsevier inc., 2005 ref The internal carotid plexus communicates with the trigeminal ganglion , the abducent nerve , and the sphenopalatine ganglion also named pterygopalatine it distributes filaments to the wall of the carotid artery , and also communicates with the tympanic branch of the glossopharyngeal nerve . Additional images gallery Image Gray777.png Nerves of the orbit, and the ciliary ganglion. Side view. Image Ciliary ganglion pathways.png Pathways in the Ciliary Ganglion. gallery Gray s Autonomic References Reflist Category Nervous system neuroscience stub pl Splot szyjno t tniczy wewn trzny ... more details
Infobox Artery Name External carotid artery Latin arteria carotis externa GraySubject 144 GrayPage 551 Image External carotid a.gif Caption Arteries of the neck right side. The external carotid artery arises from the common carotid artery labeled Common caroti on the figure. Image2 Gray511.png Caption2 Plan of branches of internal maxillary artery. External carotid labeled at bottom left. BranchFrom common carotid artery BranchTo superior thyroid artery superior thyroid , lingual artery lingual , facial ... artery superficial temporal Vein Supplies MeshName Carotid Artery, External MeshNumber A07.231.114.186.200.210 DorlandsPre a 61 DorlandsSuf 12153668 In human anatomy , the external carotid artery is a major artery of the head and neck. It arises from the common carotid artery when it bifurcates into the external and internal carotid artery . Course The external carotid artery begins at the level ... it. In the child, it is somewhat smaller than the internal carotid but in the adult, the two vessels ... line than the internal carotid, and is contained within the carotid triangle . Relations The external carotid artery is covered by the skin, superficial fascia, Platysma , deep fascia, and anterior ... part of its course, is the internal carotid artery . Posterior to it, near its origin, is the superior laryngeal nerve and higher up, it is separated from the internal carotid by the Styloglossus ... , and part of the parotid gland. Branches Image External carotid artery.png thumb right 400px Branches of external carotid artery From inferior to superior Arising in carotid triangle ref http ect.downstate.edu ... to the medical school interviewing process, a commonly taught mnemonic for the external carotid branches ... thumb 300px The external carotid and vertebral arteries. Right side. Some of the branches labeled Running through my mind, over and over like Muzak, was a mnemonic for the branches of the external carotid ... basic science anatomy external carotid artery branches External Carotid Artery and its branches Medchrome ... more details
Infobox Anatomy Name Carotid wall of tympanic cavity Latin paries caroticus cavi tympani GraySubject 230 GrayPage 1042 Image Gray913.png Caption Coronal section of right temporal bone . Image2 Gray914.png Caption2 The medial wall and part of the posterior and anterior walls of the right tympanic cavity , lateral view. Precursor System Artery Vein Nerve Lymph MeshName MeshNumber The Carotid or Anterior Wall is wider above than below it corresponds with the carotid canal , from which it is separated by a thin plate of bone perforated by the tympanic branch of the internal carotid artery , and by the deep petrosal nerve which connects the sympathetic plexus on the internal carotid artery with the tympanic plexus on the promontory. At the upper part of the anterior wall are the orifice of the semicanal for the Tensor tympani muscle and the tympanic orifice of the auditory tube , separated from each other by a thin horizontal plate of bone, the septum canalis musculotubarii. These canals run from the tympanic cavity forward and downward to the retiring angle between the squama and the petrous portion of the temporal bone . Gray s Auditory and vestibular anatomy Category Ear anatomy stub fa ... more details
A carotid Doppler machine is a device which can be used to measure blood flow velocities within the cervical carotid arteries , as well as the vertebral arteries and sometimes the subclavian arteries by means of non invasive Medical ultrasonography ultrasonic scanning in which the Doppler effect is utilized. This can be useful for estimating the effects of atherosclerotic disease on the Lumen anatomy lumen in late stages specifically the level of compromise in blood flow caused by reduction in arterial lumen diameter. File CarotidDoppler1.jpg thumb colour flow ultrasonography Doppler of a carotid artery scanner and screen These are the same ultrasound machine used in obstetric ultrasonography to evaluate the fetus in pregnant women they have high frequency probes used specifically for the purpose of imaging arteries and veins in full details and are equipped with color Doppler, pulsed wave and continuous wave doppler scans and collectively give good information about disease status of these arteries and veins. Using B mode scanning imaging and very careful technique, the same ultrasound machine can also be used to measure the intima media thickness arterial wall thickening within segments of the carotid arteries non invasively. This can be useful for detecting and tracking Atherosclerosis atherosclerotic disease in early stages. This has been used in clinical research since the early 1990s and is occasionally used by some clinicians. Reference Delmar s Guide to Laboratory and Diagnostic Tests. Rick Daniels. Edition 2, illustrated. Cengage Learning , 2009. ISBN 1418020672, 9781418020675. Page 194. External links http www.londonxray.com patients02.asp Carotid Doppler ultrasound bad link http www.nhlbi.nih.gov health dci Diseases cu cu whatis.html What Is Carotid Ultrasound? DEFAULTSORT Carotid Doppler Machine Category Medical equipment pt Doppler de car tidas ... more details
Infobox disease Name Carotid cavernous fistula Image Gray571.png Caption Oblique section through the cavernous sinus. DiseasesDB 2152 ICD10 ICD9 ICDO OMIM MedlinePlus eMedicineSubj oph eMedicineTopic 204 eMedicine mult eMedicine2 radio 134 MeshID D020216 A carotid cavernous fistula CCF results from an abnormal communication between the arterial and venous systems within the cavernous sinus in the skull. It is a type of arteriovenous fistula . As arterial blood under high pressure enters the cavernous sinus, the normal venous return to the cavernous sinus is impeded and this causes engorgement of the draining veins, manifesting most dramatically as a sudden engorgement and redness of the eye of the same side. Causes Carotid cavernous fistulae may form following closed or penetrating head trauma, surgical damage, rupture of an intracavernous aneurysm etc. or in association with connective tissue disorders, vascular diseases and dural fistulas. Classification Many types of classification have been proposed for CCF, based on the anatomy, pathophysiology and aetiology. They may be divided into low flow or high flow, traumatic or spontaneous and direct or indirect. One of the most popular classifications divides CCF into four varieties depending on the type of arterial supply. class wikitable Type Description A Fistulous supply from the internal carotid artery B Supply from the dural branches of internal carotid artery C Supply from the dural branches of external carotid artery D Combined forms Symptoms and presentation While CCF is not a lethal disease, its symptoms can be disabling and include bruit a humming sound within the skull due to high blood flow through the arteriovenous ... Best treated by balloon embolisation via a catheter in the internal carotid artery External links http rad.usuhs.edu medpix parent.php3?mode TFcase thumbnails&pt id 13369&imid 51953&quiz no top Carotid Cavernous Fistula Radiology Images from MedPix DEFAULTSORT Carotid Cavernous Fistula Category Vascular ... more details
Infobox Disease Name Carotid artery dissection Image Gray513.png Caption DiseasesDB 2145 ICD10 ICD9 ICD9 443.21 ICDO OMIM MedlinePlus eMedicineSubj emerg eMedicineTopic 82 MeshID Carotid artery dissection ... Medical Sources said Signs and symptoms The signs and symptoms of carotid artery dissection ... vision loss Ischaemic stroke Causes The causes of internal carotid artery dissection can be broadly ... carotid artery dissection is an increasingly recognised cause of stroke that preferentially ... dissections of internal carotid arteries url journal Neurologist volume 3 issue 2 pages 104 119 ref The incidence of spontaneous carotid artery dissection is low, and incidence rates for internal carotid artery dissection have been reported to be 2.6 to 2.9 per 100,000. ref name Lee2006 cite journal ... 1980s show that patients with spontaneous internal carotid artery dissection may also have a history ... separator first2 RW year 2005 title History of spontaneous dissection of the cervical carotid artery ... from 0 to 0.6 in one study to 5 to 18 in another study. ref name ReferenceA Traumatic Carotid artery ... to have blunt carotid injury, including intimal dissections, pseudoaneurysms, thromboses, or fistulas. ref name Blunt Carotid Injury cite journal doi 10.1097 00000658 199605000 00007 last1 Fabian ... Carotid Injury url journal Annals of Surgery volume 223 issue 5 pages 513 52 ref Of these, 76 had ... for most internal carotid injuries is rapid deceleration, with resultant hyperextension and rotation of the neck, which stretches the internal carotid artery over the upper cervical vertebrae, producing an intimal tear. ref name Blunt Carotid Injury After such an injury, the patient may remain asymptomatic ... first5 DS title Traumatic Carotid Artery Dissection and Pseudoaneurysm Treated With Endovascular Coils ... ref Pathophysiology Arterial dissection of the carotid artery carotid arteries occurs when a small ... patterns of internal carotid artery dissection in 40 patients url journal Stroke volume 29 issue 12 ... more details
Infobox Nerve Name Branch of glossopharyngeal nerve to carotid sinus Latin ramus sinus carotici nervi glossopharyngei GraySubject 204 GrayPage 909 Image Gray794.png Caption Hypoglossal nerve, cervical plexus, and their branches. Nerve not labeled, but region is visible. Image2 Caption2 Innervates BranchFrom glossopharyngeal nerve BranchTo MeshName MeshNumber DorlandsPre r 02 DorlandsSuf 12691976 The branch of the glossopharyngeal nerve to the carotid sinus and the carotid body is the nerve that runs downwards anterior to the internal carotid artery communicates with the vagus and sympathetic then divides in the angle of bifurcation of the common carotid artery to supply the carotid body and carotid sinus. It carries impulses from the baroreceptors in the carotid sinus to help maintain a more consistent blood pressure and from chemoreceptors in the carotid body. It is also known as Hering s nerve . See also Inferior cervical ganglion External links NormanAnatomy cranialnerves NormanAnatomyFig IX YaleCranialNerves 9 13 Gray s Cranial nerves Category Cranial nerves sr ... more details
Infobox Artery Name Cerebral portion of internal carotid artery Latin pars cerebralis arteriae carotidis internae GraySubject 146 GrayPage 567 Image Gray517.png Caption Outer surface of cerebral hemisphere, showing areas supplied by cerebral arteries. Image2 Circle of Willis en.svg Caption2 The circle of Willis arterial circle and arteries of the brain. BranchFrom internal carotid artery BranchTo Vein Supplies MeshName MeshNumber DorlandsPre p 07 DorlandsSuf 12616493 The cerebral portion of internal carotid artery . Having perforated the dura mater on the medial side of the anterior clinoid process , the internal carotid passes between the optic and oculomotor nerve s. This vessel, which then proceeds beyond the circle of Willis, is known as the middle cerebral artery , which sends branches into the anterior perforated substance at the medial extremity of the lateral cerebral fissure , and gives off its terminal or cerebral branches. Gray s Arteries of head and neck Category Arteries of the head and neck circulatory stub ... more details
Context date October 2009 Infobox Artery Name Petrous portion of the internal carotid artery Latin pars petrosa arteriae carotidis internae GraySubject 146 GrayPage 567 Image Gray915.png Caption Auditory tube, laid open by a cut in its long axis. Image2 Caption2 BranchFrom internal carotid artery BranchTo caroticotympanic arteries , vidian artery Vein Supplies MeshName MeshNumber DorlandsPre p 07 DorlandsSuf 12617502 Petrous portion of the internal carotid artery or petrous segment . When the internal carotid artery enters the canal in the petrous portion of the temporal bone , it first ascends a short distance, then curves forward and medially, and again ascends as it leaves the canal to enter the cavity of the skull between the lingula and petrosal process of the Sphenoid bone sphenoid . The artery lies at first in front of the cochlea and tympanic cavity from the latter cavity it is separated by a thin, bony lamella, which is cribriform in the young subject, and often partly absorbed in old age . Farther forward it is separated from the semilunar ganglion by a thin plate of bone, which forms the floor of the fossa for the ganglion and the roof of the horizontal portion of the canal. Frequently this bony plate is more or less deficient, and then the ganglion is separated from the artery by fibrous membrane. The artery is separated from the bony wall of the carotid canal by a prolongation of dura mater , and is surrounded by a number of small veins and by filaments of the carotid plexus , derived from the ascending branch of the superior cervical ganglion of the sympathetic trunk . External links LoyolaMedEd Neuro neurovasc navigation icpetr.htm eMedicineDictionary petrous part of internal carotid artery Gray s Arteries of head and neck Category Arteries of the head and neck circulatory stub ... more details
Encyclopedia
top
