| IMI | immunologically measurable insulin; impending myocardial infarction; Imperial Mycological Institute ... |
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| AMI | acquired monosaccharide intolerance; acute myocardial infarction; amitriptyline; anterior myocardial... |
| MI | first meiotic metaphase; maturation index; medical illustrator; medical informatics; medical inspect... |
| SMI | Self-Motivation Inventory; senior medical investigator; severe mental impairment; silent myocardial ... |
| PI | first meiotic prophase; isoelectric point; pacing impulse; package insert; pancreatic insufficiency;... |
| transmural | Through any wall, as of the body or of a cyst or any hollow structure. Origin: trans-+ L. Murus, wall (05 Mar 2000) |
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| transmural pressure | Pressure across the wall of a cardiac chamber or of a blood vessel. In the heart, transmural pressure is the resultant of the intracavitary pressure minus the extracavitary (i.e., pericardial) pressure and is the distending, i.e., true filling, pressure of the cardiac chamber of measurement when this is done during diastole. Since the pericardial pressure normally approximates zero, the filling pressure (usually equal to ventricular diastolic mean pressure), obviating the complexities of measuring pericardial pressure. (05 Mar 2000) |
| cardiac infarction | A term used to describe irreversible injury to heart muscle. Synonym: heart attack. See: infarction. Common symptoms include substernal, crushing chest pain that may radiate to the jaw or arms. Chest pains may be associated with nausea, sweating and shortness of breath. Acronym: MI (27 Sep 1997) |
| cerebral infarction | Infarction of brain tissue. (12 Dec 1998) |
| peri-infarction block | An electrocardiographic abnormality associated with an old myocardial infarct and caused by delayed activation of the myocardium in the region of the infarct; characterised by an initial vector directed away from the infarcted region with the terminal vector directed toward it. (05 Mar 2000) |
| watershed infarction | Cortical infarction in an area where the distribution of major cerebral arteries meet or overlap. (05 Mar 2000) |
| postmyocardial infarction pericarditis | <pathology> Inflammation of the pericardium. (18 Nov 1997) |
| postmyocardial infarction syndrome | <syndrome> A complication developing several days to several weeks after myocardial infarction; its clinical features are fever, leukocytosis, chest pain, and evidence of pericarditis, sometimes with pleurisy and pneumonitis, with a strong tendency to recurrence; probably of immunopathogenetic origin. (05 Mar 2000) |
| heart rupture, post-infarction | Rupture of the heart after myocardial infarction. (12 Dec 1998) |
| splenic infarction | Cell death (necrosis) of a portion or all of the spleen due to an interruption in blood flow. (27 Sep 1997) |
| infarction | 1. <cardiology> The formation of an infarct. 2. An infarct. Origin: L. Infarcire = to stuff in (18 Nov 1997) |
| biopsy, myocardial | <investigation, procedure, surgery> A procedure which involves the removal of a small specimen of cardiac muscle tissue for microscopic analysis. This is generally performed at the same time as a cardiac catheterisation or as a very similar, yet separate, procedure. A small piece of heart tissue is taken via a small forceps inserted into the cardiac catheter site (usually threaded through a vein in the neck). This test may reveal the cause of a cardiomyopathy, myocarditis, amyloidosis or a heart transplant rejection. (21 Mar 1998) |
| myocardial | Refers to the heart's muscle mass. (09 Oct 1997) |
| myocardial biopsy | <procedure> A procedure which involves the removal of a small specimen of cardiac muscle tissue for microscopic analysis. This is generally performed at the same time as a cardiac catheterisation or as a very similar, yet separate, procedure. A small piece of heart tissue is taken via a small forceps inserted into the cardiac catheter site (usually threaded through a vein in the neck). This test may reveal the cause of a cardiomyopathy, myocarditis, amyloidosis or a heart transplant rejection. (27 Sep 1997) |
| myocardial bridge | A bridge of cardiac muscle fibres extending over the epicardial aspect of a coronary artery; this finding, in cases of sudden unexpected death, has led to speculation that cardiac contraction during exertion could constrict the coronary artery. (05 Mar 2000) |