Main MyocardialinfarctionMyocardialinfarction complications may occur immediately following a Myocardialinfarction heart attack in the Acute medical acute phase , or may need time to develop a Chronic medicine chronic problem . After an infarction, an obvious complication is a second infarction, which ... Prevalence, clinical characteristics, and mortality among patients with myocardialinfarction presenting ... jama.283.24.3223 ref Myocardial rupture Main Myocardial rupture Myocardial rupture is most common three to five days after myocardialinfarction, commonly of small degree, but may occur one day ... acute myocardialinfarction in the direct percutaneous coronary intervention reperfusion ... factors for myocardial rupture include completion of infarction no revascularization performed , female sex, advanced age, and a lack of a previous history of myocardialinfarction. ref name Yip 2003 ... rupture in the United States National Registry of MyocardialInfarction journal J Am Coll Cardiol ... myocardialinfarction journal J Am Coll Cardiol year 2002 volume 39 issue 4 pages 598 603 pmid 11849857 ... see Myocardialinfarction Pathophysiology pathophysiology section , arrhythmias are a frequent ... myocardialinfarction is less than 36 hours and the onset of cardiogenic shock is less than ... in acute myocardialinfarction complicated by cardiogenic shock. SHOCK Investigators ... Myocardialinfarction complications Category Aging associated diseases Category Cardiovascular ... live cells left in the infarct. Congestive heart failure Main Congestive heart failure A myocardialinfarction may compromise the function of the heart as a pump for the Circulatory system ... for MI, the incidence of myocardial rupture is about 1 of all MIs. ref name Yip 2003 cite ... normal myocardium which may be hypercontractile in the post infarction period makes it a nidus ... event. Cardiogenic shock A complication that may occur in the acute setting soon after a myocardial ... more details
Main Myocardialinfarction A diagnosis of myocardialinfarction is made by integrating the history of the presenting ... cite journal last Mallinson first T title MyocardialInfarction journal Focus on First Aid volume issue ...&linkID 23278&cook yes Myocardialinfarction diagnosis and investigations GPnotebook , retrieved November ... , a pathologist can diagnose a myocardialinfarction based on Anatomical pathology anatomopathological ... on an Medical ultrasonography echocardiogram are also suggestive of a myocardialinfarction ... Fenton et al. http www.emedicine.com EMERG topic327.htm section workup Myocardialinfarction eMedicine ... MI a patient is diagnosed with myocardialinfarction if two probable or three definite of the following .... title Myocardialinfarction redefined a consensus document of The Joint European Society of Cardiology American College of Cardiology Committee for the redefinition of myocardialinfarction journal ... MyocardialInfarction . eMedicine . Retrieved November 22, 2006. ref ref name harrisons p1444 .... 1450. ref Electrocardiogram Main Electrocardiography in myocardialinfarction Image 12 Lead EKG ... wall myocardialinfarction. The primary purpose of the electrocardiogram is to detect ischemia or acute ... . In particular, acute myocardialinfarction in the distribution of the circumflex artery is likely ... for right ventricular and posterior myocardialinfarction. The 12 lead ECG is used to classify ... does not rule out acute myocardialinfarction. Mistakes in interpretation are relatively common, and the failure ... myocardialinfarction results of the Emergency Department Quality in MyocardialInfarction EDQMI ... of chest pain may accurately predict a high likelihood of a myocardialinfarction in the near ... url http www.clinchem.org cgi content full 51 5 810 ref The diagnosis of myocardialinfarction ... presenting with chest pain are generally treated with the assumption that a myocardialinfarction ... elevation myocardialinfarction a report of the American College of Cardiology American Heart Association ... more details
of an anterior wall myocardialinfarction. Image IandRStemi.JPG thumb An acute STEMI involving ... in suspected myocardialinfarction has the main purpose of detecting ischemia or acute coronary injury in emergency department populations coming for symptoms of myocardialinfarction MI . Also, it can distinguish clinically different types of myocardialinfarction. Technical issues The standard ... of the left ventricle . In particular, acute myocardialinfarction in the distribution of the circumflex ... for right ventricular and posterior myocardialinfarction. In spite of these limitations, the 12 lead ECG stands at the center of risk stratification for the patient with suspected acute myocardialinfarction ... findings for the quality of care of patients with acute myocardialinfarction results of the Emergency Department Quality in MyocardialInfarction EDQMI study journal Circulation volume ... ECG. However, a normal ECG does not rule out acute myocardialinfarction. ST elevation MI The current guidelines for the ECG diagnosis of the ST segment elevation type of acute myocardialinfarction ... myocardialinfarction is not the most common cause of ST segment elevation in chest pain patients ... in conditions other than acute myocardialinfarction journal N. Engl. J. Med. volume 349 issue 22 ... must therefore be well versed in recognizing the so called ECG mimics of acute myocardialinfarction ... manifestations patterns that confound the EKG diagnosis of acute myocardialinfarction left ... identification of acute myocardialinfarction AMI and non AMI syndromes by emergency physicians ... myocardialinfarction is the hyperacute T wave, which is treated the same as ST segment elevation. ref ... this is rarely seen, because it only exists for 2 30 minutes after the onset of infarction. ref name .... ref name gpnotebook http www..co.uk simplepage.cfm?ID 261750790 gpnotebook.co.uk ECG changes in myocardialinfarction Retrieved on June 16, 2010 ref Pathological QRS complex Q waves may appear within ... more details
Main MyocardialinfarctionMyocardialinfarction management involves salvaging as much myocardium as possible ... 95 3 198 title Routine use of oxygen in the treatment of myocardialinfarction systematic review Wijesinghe ... myocardialinfarction journal Cochrane Database Syst Rev volume 6 issue 6 pages CD007160 year ... myocardialinfarction ISIS 2 journal Lancet volume 2 issue 8607 pages 349 60 year 1988 pmid 2899772 ... MyocardialInfarction journal J Am Coll Cardiol volume 44 pages 671 719 pmid 15358045 url http www.acc.org ... myocardialinfarction a report of the American College of Cardiology American Heart Association ... of Patients With Unstable Angina Non ST Elevation MyocardialInfarction developed in collaboration ... of acute myocardialinfarction, that we are said to be in the reperfusion era. ref name Reperfusion ... of 30 Day Mortality in the Era of Reperfusion for Acute MyocardialInfarction url journal Circulation ... outcome after acute myocardialinfarction in the reperfusion era the Primary Angioplasty in Myocardial ... doi 10.1056 NEJMra022580 ref Patients who present with suspected acute myocardialinfarction and ST ... elevation myocardialinfarction NSTEMI . They receive many of the same initial therapies and are often ... journal pmid 7905143 title Indications for fibrinolytic therapy in suspected acute myocardialinfarction ... artery during an acute myocardialinfarction is known as aborting the myocardialinfarction. If treated ... Verheugt FW, Gersh BJ, Armstrong PW year 2006 title Aborted myocardialinfarction a new target for reperfusion ... threatening arrhythmias after a myocardialinfarction and not to suppress the premature ventricular contraction ventricular ectopy that is often seen after a myocardialinfarction. ref name Echt ... ventricular dysfunction after recent and remote myocardialinfarction. The SWORD Investigators. Survival ... in patients with left ventricular dysfunction after recent myocardialinfarction EMIAT. European ... after a myocardialinfarction, with beneficial effects on cholesterol levels, blood pressure ... more details
This table gives an overview of the pathology seen in myocardialinfarction by time after obstruction. For the first 30 minutes no change at all can be seen by gross examination or by light microscopy in histopathology . However, in electron microscopy relaxed myofibrils, as well as glycogen loss and mitochondrial swelling can be seen. class wikitable Time Gross examination Histopathology br light microscopy 0 0.5 hours None None 0.5 4 hours None Glycogen Depletion, as seen with a PAS Stain Possibly waviness of fibers at border 4 12 hours Sometimes dark Mottle mottling Initiation of coagulation necrosis Edema Hemorrhage 12 24 hours Dark mottling Ongoing coagulation necrosis Karyopyknosis Hypereosinophilia of myocytes Contraction band necrosis in margins Beginning of neutrophil infiltration 1 3 days Infarct center becomes yellow Tan color tan Continued coagulation necrosis Loss of nuclei and Cardiac muscle Striation striations Increased infiltration of neutrophils to Interstitial fluid interstitium 3 7 days Hyperemia at border Softening yellow tan center Beginning of disintegration of dead muscle fibers Necrosis of neutrophils Beginning of macrophage removal of dead cells at border 7 10 days Maximally soft and yellow tan Red tan margins Increased phagocytosis of dead cells at border Beginning of granulation tissue formation at margins 10 34 days Red gray and depressed borders Mature granulation tissue with type I collagen ref Bishop JE, Greenbaum R, Gibson DG, Yacoub M, Laurent GJ. Enhanced deposition of predominantly type I collagen in myocardial disease. J Mol Cell Cardiol. 1990 22 1157 1165 ref 2 8 weeks Gray white granulation tissue Increased collagen deposition Decreased cellularity More than 2 months Completed scarring Dense collagenous scar formed colspan 3 font size 1 If not else specified in boxes, then reference is nr ref name Kumar11 2 Table 11 2 in cite book author Mitchell, Richard Sheppard Kumar, Vinay Abbas, Abul K. Fausto, Nelson title Robbins Basic Pathology ... more details
Multiple issues orphan June 2009 unreferenced June 2009 The Myocardial Ischaemia Audit Project MINAP previously known as the myocardialinfarction National Audit Database began in late 1998 when a broadly based steering group developed a dataset for acute myocardialinfarction AMI . This allowed clinicians to examine the management of myocardialinfarction within their hospitals against targets specified by the National Service Framework for Coronary Heart Disease NSF . The audit project produces annual reports How the NHS manages heart attacks to show the performance of hospitals, ambulance services and cardiac networks in England and Wales against national standards and targets for the care of heart attack patients. MINAP has recently changed its name from the MyocardialInfarction National Audit Project to the Myocardial Ischaemia National Audit Project to reflect the importance of all acute coronary syndromes.Quarterly reports are available for hospitals, Strategic Health Authorities, and the Department of Health. MINAP provides thrombolysis data to the Healthcare Commission for their Annual Health Check. MINAP provides data to ambulance services to help monitor patient outcomes and support improvements in training and care delivery. MINAP also provides data to cardiac networks to support service improvement. MINAP is the first national audit to release annual reports showing hospital performance against NSF targets in the public domain which are available below. Sustained improvement of performance against NSF targets for thrombolysis and use of secondary prevention medication has been demonstrated since the end of 2000. Category National Health Service NHS stub ... more details
, or vasoconstricted e.g. cocaine vasoconstriction leading to myocardialinfarction . Hypertension ... diseases ref http www.ncbi.nlm.nih.gov pubmed 11139833 ref such as Myocardialinfarction , stroke cerebral infarction , shock resuscitation , replantation surgery , frostbite , burn s and organ transplant ation. By localization Heart Myocardialinfarction MI , commonly known as a heart attack , is an infarction of the heart, causing some heart cells to die. This is most commonly due to occlusion ... of Infarction Last Editorial Review 11 19 1998 ref caused by obstruction of the tissue s blood supply ... to the amount of blood present White infarction s anemic infarct s affect solid organs such as the spleen ... . Red infarction s hemorrhagic infarct s , generally affect the lung s or other loose organs testis ... or death of heart muscle tissue myocardium . Brain Cerebral infarction is the ischemia ischemic kind ... caused by cerebral infarction should be distinguished from two other kinds of stroke cerebral hemorrhage ... resulting in death. Spleen Splenic infarction occurs when the splenic artery or one of its ... spectrum of splenic infarction journal Am Surg volume 64 issue 2 pages 182 8 year 1998 month February ... Limb infarction is an infarction of an arm or leg . Causes include arterial embolism s and skeletal muscle infarction as a rare complication of long standing, poorly controlled diabetes mellitus . ref ... infarction in diabetes mellitus journal J. Rheumatol. volume 27 issue 4 pages 1063 8 year 2000 month ... Bone Infarction of bone results in avascular necrosis . Without blood, the bone tissue dies ... surfaces see osteochondritis dissecans . Testicle an infarction of a testicle may be caused by testicular ... more details
Myocardial ischemia is an imbalance between myocardium myocardial oxygen supply and demand. Left untreated, it results in angina pectoris , myocardial stunning , Hibernating myocardium myocardial hibernation , ischemic preconditioning , postconditioning, or under the most severe instances, acute coronary syndrome and myocardialinfarction . Myocardial ischemia is the pathological state underlying ischaemic heart disease . References Hurst s The Heart, 12th edition, 2007. Category Medical terms Category Cardiovascular system medical stub ... more details
Myocardial scarring is fibrous tissue that replaces normal tissue destroyed by injury or disease pertaining to the cardiac muscle muscular tissue of the heart . Myocardial scarring occurs in myocardialinfarction , and also results from the surgical repair of congenital heart disease . Such scarring can disrupt the electrical conduction system of the heart , and may also irritate surrounding viable ventricular myocyte s making them more likely to depolarize spontaneously. References http medical dictionary.thefreedictionary.com Myocardial http medical dictionary.thefreedictionary.com scar Heart diseases Category Cardiology med stub ... more details
commonly seen as a serious sequela of an acute myocardialinfarction heart attack . It can also ... after an acute myocardialinfarction include female gender, ref name Yip 2003 ref name Moreno 2002 ... free wall rupture after reperfusion therapy for acute myocardialinfarction. journal Am J ... therapy for the treatment of an acute myocardial rupture. However, the decrease in the incidence of myocardial rupture is not uniform there is a slight increase in the incidence of rupture if thrombolytic agents are used to abort a myocardialinfarction. ref name Becker 1996 cite journal author ... WJ. title A composite view of cardiac rupture in the United States National Registry of MyocardialInfarction ... in patients with acute myocardialinfarction. journal J Am Coll Cardiol year 2002 volume 39 issue 4 pages 598 603 pmid 11849857 doi 10.1016 S0735 1097 01 01796 X ref The incidence of myocardial rupture if PCI is performed in the setting of an acute myocardialinfarction is about 1 percent. ref ... Cardiac rupture complicating acute myocardialinfarction in the direct percutaneous coronary intervention ... slit like tear that generally occurs within 24 hours of an acute myocardialinfarction. Type ...Infobox Disease Name Myocardial rupture Image Caption DiseasesDB ICD10 ICD10 I 23 3 i 20 ICD10 I 23 5 i 20 , S26.8 ICD9 ICDO OMIM MedlinePlus eMedicineSubj med eMedicineTopic 1571 MeshID D006341 Myocardial ... retrieve pii S0020 1383 09 00277 0 ref Etiology The most common cause of myocardial rupture is a recent myocardialinfarction, with the rupture typically occurring three to five days after infarction. Fact date April 2007 Other causes of rupture include cardiac trauma, endocarditis ... . ref name Yip 2003 Other presenting signs associated with myocardial rupture include a pericardial ... and delay of revascularization greater than 2 hours. ref name Moreno 2002 Incidence The incidence of myocardial ... coronary intervention is performed to abort the infarction, the incidence of rupture is significantly ... more details
, brain tissue in cerebral infarction does not store glycogen, and the heart in myocardialinfarction ...A limb infarction is an infarction area of tissue death of an arm or leg . It may cause skeletal muscle infarction , avascular necrosis of bones, or necrosis of a part of or an entire limb. Affected tissues The major tissues affected are nerves and muscles, where irreversible damage starts to occur after 4 6 hours of cessation of blood supply. ref name bergqvist http www.internetmedicin.se dyn main.asp?page 1529 internetmedicin.se Art remboli thrombos Professor David Bergqvist. Reviewed by Professor ... resistant to infarction compared to the heart and brain because its ability to rely on anaerobic ... 40 ref name Campbell arteriosclerosis obliterans ref name aho Another cause of limb infarction is skeletal muscle infarction as a rare complication of long standing, poorly controlled diabetes ... Skeletal muscle infarction in diabetes mellitus journal J. Rheumatol. volume 27 issue 4 pages 1063 ... or legs appear as soon as there is ischemia of the tissue, even before any frank infarction ... mdguidelines Later symptoms are closely related to infarction of the tissue supplied by the occluded .... ref name mdguidelines A major presentation of diabetic skeletal muscle infarction is painful thigh ... resonance imaging MRI is the preferred test for diagnosing skeletal muscle infarction . ref ... Physiology Concepts Myocardial Oxygen Demand Richard E. Klabunde, PhD ref Thus, resting the affected limb should delay onset of infarction substantially after arterial occlusion. Low molecular weight ... House , the main character of the medical drama House, M.D. , was stricken with a limb infarction in his right quadriceps muscle. The infarction became advanced. Muscle death occurred and the doctors .... It should be noted that the injury suffered by House is a rather extreme example of limb infarction. References reflist Hemodynamics DEFAULTSORT Limb Infarction Category Gross pathology ... more details
decade, similar to myocardialinfarction treatment, thrombolytic drugs were introduced in the therapy of cerebral infarction. The use of intravenous Tissue plasminogen activator rtPA therapy can be advocated ... . A cerebral infarction occurs when a blood vessel that supplies a part of the brain becomes ... in death. Classification There are various classification systems for a cerebral infarction ... history of clinically identifiable subtypes of cerebral infarction journal Lancet volume 337 ... cgi reprint 24 1 35 format PDF ref Symptoms Symptoms of cerebral infarction are determined ..., light reaction and lack of human eye eye movement on opposite side. If the infarction occurs on the left ... cerebral infarction a thrombus usually forms around atherosclerosis atherosclerotic plaques. An embolic ... large artery. Risk factors Risk factors for cerebral infarction are generally the same as for atherosclerosis ... infarction is caused by a thrombus occluding blood flow to an artery supplying the brain ... may decrease the risk of recurrence if performed rapidly after cerebral infarction. Carotid endarterectomy is also indicated to decrease the risk of cerebral infarction for symptomatic carotid ... more details
Infobox disease Name Splenic infarction Image Splenic infarction.png Caption Two large splenic infarcts ... eMedicineTopic 193718 MeshID D013159 In medicine , splenic infarction is a condition in which oxygen supply to the spleen is interrupted, leading to partial or complete infarction tissue death due to oxygen ... RE title The natural history of splenic infarction journal Surgery volume 100 issue 4 pages 743 50 year 1986 month October pmid 3764696 doi url ref Splenic infarction occurs when the splenic artery ... C, Seifart U, G rg K title Acute, complete splenic infarction in cancer patient is associated with a fatal ... HV, Sheedy PF, Edwards WD title Thromboembolic splenic infarction journal Mayo Clin. Proc. volume 61 ... infarction report of three cases of atherosclerotic embolization originating in the aorta and retrospective ... Salvi PF, Stagnitti F, Mongardini M, Schillaci F, Stagnitti A, Chirletti P title Splenic infarction ... EH, Morgenstern L, Hiatt JR title The clinical spectrum of splenic infarction journal Am Surg ... T, Mukae M, et al. title Splenic infarction after Epstein Barr virus infection in a patient with hereditary ... infarction during acute malaria journal Trans. R. Soc. Trop. Med. Hyg. volume 99 issue 1 pages 82 ... name pmid18171204 cite journal author Florescu D, Sordillo PP, Glyptis A, et al. title Splenic infarction ... G, Laws HJ, et al. title Splenic infarction in a patient hereditary spherocytosis, protein C deficiency ... infarction is also more common in hematological disorders with associated splenomegaly , such as the myeloproliferative ... hemoglobinopathies can also predispose to infarction. Splenic infarction can also result from ... can cause infarction. Examples include abdominal traumas, aortic dissection , torsion of the splenic ..., Riordan SM title Splenic infarction complicating percutaneous transluminal coeliac artery stenting ... year 2008 pmid 18684317 pmc 2533016 doi 10.1186 1752 1947 2 261 url ref Splenic infarction can be due ... with splenic infarction in case reporters, for example Wegener s granulomatosis ref name pmid10852290 ... more details
Infobox Disease Name PAGENAME Image Caption DiseasesDB 29034 ICD10 ICD9 ICD9 557.0 ICDO OMIM MedlinePlus eMedicineSubj eMedicineTopic MeshID Bowel infarction or bowel death results from a severely restricted blood supply to part of the bowel this can in turn be due to an uncorrected bowel twist or bowel strangulation , Citation needed date March 2010 or to occlusion of one of the mesenteric arteries . ref name pmid2104734 cite journal author Smerud MJ, Johnson CD, Stephens DH title Diagnosis of bowel infarction a comparison of plain films and CT scans in 23 cases journal AJR Am J Roentgenol volume 154 issue 1 pages 99 103 year 1990 month January pmid 2104734 doi url http www.ajronline.org cgi pmidlookup?view long&pmid 2104734 ref File Intestinal Obstruction.JPG thumb Intestinal obstruction. Strangulation sometimes results from fibrous bands which can form after major bowel surgery due to post operative adhesions. The condition is very difficult to anticipate and not an easy diagnosis. File Ischemic bowel.JPG thumb Bowel infarction. Some people have survived resection of extensive sections of bowel following arterial occlusion, but maintaining nourishment presents risks. The singer Maurice Gibb , member of the Bee Gees , is understood to have died from complications following a bowel twist. Small bowel volvulus is a rare but life threatening surgical emergency. Central abdominal pain resistant to narcotic analgesia should heighten the suspicion of the diagnosis. See also Abdominal angina Ischemic colitis References reflist DEFAULTSORT Bowel Infarction Category Gross pathology Category Abdomen Category Digestive system Category Gastroenterology Pathology stub Digestive system diseases pl Zadzierzgni cie jelita ... more details
Myocardial disarray , also known as myocyte disarray , is a term to describe the loss of the normal parallel alignment of myocyte s the muscle cell biology cells of the heart . Instead, the myocytes usually form circles around foci of connective tissue . Myocardial disarray is associated with myocardial fibrosis the replacement of the myocytes with non contractile Myocardial scarring scar tissue . Myocardial disarray can be seen in a number of disease states, including Aortic stenosis Congenital heart disease Hypertension Hypertensive heart disease Hypertrophic cardiomyopathy The common factor amongst all these diseases is that they all cause varying degrees of remodelling myocardial fibrosis of the left ventricle ventricles . External links http heart.bmjjournals.com cgi content abstract 47 6 527 Myocardial disarray. A critical review http hcm.stanfordhospital.com Information from the Stanford Hypertrophic Cardiomyopathy Center Category Cardiology es Desarreglo mioc rdico symptom stub ... more details
Refimprove date August 2009 File Myocardial bridges.jpg thumb Angiographic images showing a bridge on the left anterior descending coronary artery LAD in a male patient of 65 years. A1 Right anterior oblique view taken at end systole. The compressed vessel segment is indicated by the two arrows. B1 Left anterior oblique view taken nearly at the same instant. A2 Same view as in A1, but taken 133 ms later. The tunneled segment is no longer compressed. B2 Same view as in B1 but 133 ms later. A myocardial bridge occurs when the one of the Coronary circulation coronary arteries tunnels through the cardiac muscle myocardium rather than resting on top of it. Typically, the arteries rest on top of the heart muscle and feed blood down into smaller vessels that populate throughout the myocardium. But if the muscle grows around one of the larger arteries, then a myocardial bridge is formed. As the heart squeezes to pump blood, the muscle exerts pressure across the bridge and constricts the artery. This defect is present from birth. It can lead to uncomfortable, powerful heartbeats and angina. The condition is diagnosed on a scaled based on what percentage of obstruction occurs. If there is less than 50 blockage, then the condition is probably benign. A result of at least 70 usually causes some pain. Small amounts of myocardial bridging often are undetectable, as the blood usually flows through the coronary while the heart is relaxing in diastole. This condition can cause complications such as vasospasm , angina pectoris , arrhythmia , Vtach . Additionally many patients express discomfort in specific positions, i.e. laying on the left side for a prolonged period of time See also Cardiac CT Angiography External links http abcnews.go.com Health HeartDiseaseScreening story?id 4224809 Harlan Krumholz, M.D. discusses myocardial bridging http www.medterms.com script main art.asp?articlekey 11692 Medical definition of myocardial bridge DEFAULTSORT Myocardial Bridge Category Cardiology ... more details
Infobox disease Name Myocardial stunning Image Caption DiseasesDB ICD10 ICD9 ICDO OMIM MedlinePlus eMedicineSubj eMedicineTopic MeshID D017682 Myocardial stunning is the reversible reduction of function of heart contraction ref MeshName Myocardial Stunning ref after reperfusion not accounted for by tissue damage or reduced blood flow. ref name pmid11255859 cite journal author Grund F title Three cardiac mysteries stunning, hibernation and ischemic preconditioning language Norwegian journal Tidsskr. Nor. Laegeforen. volume 121 issue 4 pages 440 4 year 2001 month February pmid 11255859 doi url ref After total ischemia occurs, the myocardium switches immediately form aerobic glycolysis to anaerobic glycolysis resulting in the reduced ability to produce high energy phosphates such as ATP and Creatinine Phosphate. At this point, the lack of the energy and lactate accumulation results in cessation of contraction within 60 seconds of ischemia i.e. Vessel Occlusion . Subsequent to this is a period of myocardial stunning, in which reversible ischemic damage is taking place. At approximately 30 minutes after the onset of total ischemia the damage becomes irreversible, thereby ending the phase of myocardial stunning. References reflist External links http www.dialogues cvm.org 1 10sp html 10sp 1.asp Myocardial stunning in man cite journal author Baker C, Rimoldi O, Camici P, Barnes E, Chacon M, Huehns T, Haskard D, Polak J, Hall R title Repetitive myocardial stunning in pigs is associated with the increased expression of inducible and constitutive nitric oxide synthases. journal Cardiovasc Res volume 43 issue 3 pages 685 97 year 1999 pmid 10690340 doi 10.1016 S0008 6363 99 00149 2 cite journal author Wittstein IS, Thiemann DR, Lima JA, et al. title Neurohumoral features of myocardial stunning due to sudden emotional stress journal N. Engl. J. Med. volume 352 issue 6 pages 539 48 year 2005 month February pmid 15703419 doi 10.1056 NEJMoa043046 url http content.nejm.org cgi pmidlookup ... more details
of patients that are at risk of having a myocardial or coronary incident. ex myocardialinfarction, myocardial ischemia, coronary aneurysm, wall motion abnormalities Assessment of viable myocardium ...Myocardial perfusion scan is a nuclear medicine procedure that illustrates the function of the heart muscle myocardium . ref MeshName Myocardial Perfusion Imaging ref It evaluates many heart conditions from coronary artery disease CAD to hypertrophic cardiomyopathy and myocardial wall motion abnormalities. The function of the myocardium is also evaluated by calculating the left ventricular ejection fraction LVEF of the heart. This scan is done in conjunction with a cardiac stress test . Planar techniques, such as conventional scintigraphy , are rarely used. Rather, Single photon emission computed tomography SPECT is more common in the US. With multihead SPECT systems, imaging can often be completed in less than 10 minutes. With SPECT, inferior and posterior abnormalities and small areas of infarction can be identified, as well as the occluded blood vessels and the mass of infarcted and viable myocardium. ref name merck http www.merck.com mmpe sec07 ch070 ch070i.html Merck manuals Radionuclide ... 2009 ref Major indications for a myocardial perfusion test Diagnosis of CAD and various cardiac abnormalities .... benefits Critics have written that myocardial perfusion imaging has risks of cancer from high radiation ... radiation dose received from CT Angiography and Conventional Coronary Angiography are more than Myocardial ... dose ionizing radiation, myocardial perfusion imaging had the highest average effective dose 15.6 ... It may be summarized that radiation hazzard should not be concerned as any deterrent for myocardial ... of radiocontrast dyes used in CT angiography and Coronary Angiography. In Myocardial Perfusion Imaging ... or tetrofosmine . From 1993 2001, myocardial perfusion scans increased 6 y with no justification ... dose to the patient compared to technetium 99m as a complete myocardial perfusion exam can be achieved ... more details
Persistent aura without infarction PAWOI is a little known condition first described under the designation prolonged migraine Aura symptom aura status ref Haas DC. Prolonged migraine aura status. Ann Neurol 1982 11 197 199 ref that is not yet fully understood. PAWOI is said to be a possible cause of a variety of neurology neurological symptoms, including visual snow , loss of visual perception vision , increased afterimage s, tinnitus , and others ref http www.migraine aura.org Migraine Aura Foundation ref . However the pathogenesis of PAWOI is unknown, in other words, it is not known exactly how the aforementioned symptoms are caused. Furthermore, it is not clear which medical examinations are useful in diagnosing PAWOI. At present, PAWOI is usually diagnosed solely based on the patient s present and past symptoms. Different medication has been tried as treatment, notably acetazolamide ref Haan J, Sluis P, Sluis LH, Ferrari MD. Acetazolamide treatment for migraine aura status. Neurology 2000 55 1588 1589. ref , valproate ref Rothrock JF. Successful treatment of persistent migraine aura with divalproex sodium. Neurology 1997 48 261 262. ref , lamotrigine ref Chen WT, Fuh JL, Lu SR, Wang SJ. Persistent migrainous visual phenomena might be responsive to lamotrigine. Headache 2001 41 823 825. ref , topiramate , and furosemide ref Rozen TD. Treatment of a prolonged migrainous aura with intravenous furosemide. Neurology 2000 55 732 733. ref . References Reflist 2 med stub Category Diseases and disorders ... more details
Expert subject medicine date November 2008 Myocardial depressant factor MDF is a low molecular weight peptide ref MeshName Myocardial Depressant Factor ref released from the pancreas into the blood in mammals during various Shock circulatory shock states. ref name pmid6181287 cite journal author Lefer AM title The pathophysiologic role of myocardial depressant factor as a mediator of circulatory shock journal Klin. Wochenschr. volume 60 issue 14 pages 713 6 year 1982 month July pmid 6181287 doi 10.1007 BF01716561 url ref MDF is a significant mediator of shock pathophysiology, reducing myocardial contractility, constricting splanchnic arteries and impairing phagocytosis by the reticuloendothelial system . Survival can be improved by preventing its release or blocking its activity, for example using glucocorticoids , prostaglandin s, aprotinin , captopril , imidazole or lidocaine . References reflist Category Peptides Category Cardiovascular system med stub ... more details
Unreferenced date December 2009 Merge Myocardial stunning date March 2009 In cardiology stunned myocardium is a state when some section of the myocardium corresponding to area of a major coronary occlusion shows a form of contractile abnormality. This is a segmental dysfunction which persists for a variable period of time, about two weeks, even after ischemia has been relieved by for instance angioplasty or coronary artery bypass surgery . In this situation, while myocardial blood flow MBF returns to normal, function is still depressed for a variable period of time. Clinical situations of stunned myocardium are acute myocardialinfarction AMI after percutaneous transluminal coronary angioplasty PTCA after cardiac surgery neurogenic stunned myocardium following an acute cerebrovascular event such as a subarachnoid hemorrhage See also Hibernating myocardium Myocardial scarring Myocardialinfarction DEFAULTSORT Stunned Myocardium Category Ischemic heart diseases ... more details
Monteplase is an antithrombic proposed for use in acute myocardialinfarction . ref name pmid15984905 cite journal author Inoue T, Nishiki R, Kageyama M, Node K title Therapeutic potential of monteplase in acute myocardialinfarction journal Am J Cardiovasc Drugs volume 5 issue 4 pages 225 31 year 2005 pmid 15984905 doi 10.2165 00129784 200505040 00002 url ref ref name pmid15695140 cite journal author Inoue T, Nishiki R, Kageyama M, et al. title Long term benefits of monteplase before coronary angioplasty in acute myocardialinfarction journal Am. J. Cardiol. volume 95 issue 4 pages 506 8 year 2005 month February pmid 15695140 doi 10.1016 j.amjcard.2004.09.061 url http linkinghub.elsevier.com retrieve pii S0002 9149 04 01699 6 ref References reflist Category Drugs acting on the blood and blood forming organs drug stub pt Monteplase ... more details
Orphan date February 2009 Myo cytolysis refers to a degenerative change often reversible that occurs to Muscle fiber myocyte s upon myocardial strain . This phenomenon tends to occur when neighboring cardiac muscle loses its ability to contract i.e. in ischemia or infarction . The remaining viable muscles, as the result, strain to compensate for the loss of other muscles in order to deliver the necessary cardiac output . During the process, myocardial cells are stretched and stressed to produce new contractile element s. The histopathology of myocytolysis typically present with lighter Staining biology stain ed cytoplasm with clear patches , which is the result of presence of glycogen in place of contractile elements in the cytoplasm. See also Myocardial infarction Myocardial ischaemia External links http www.brown.edu Courses Digital Path systemic path cardio mi myocytolysis.html disease stub Category Cardiomyopathy Category Ischemic heart diseases ... more details
YII may refer to Factor XII , a plasma protein This spelling version was found in http de.scientificcommons.org 23432446 Levels of intrinsic coagulation factors and the risk of myocardial infarction among men opposite and synergistic effects of factors XI and YII 2006 Yii , a web application framework yii, ISO 639 3 code of the Yidiny language disambig ... more details
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