Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0151744 (myocardial ischemia)
 31,282 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The results of long-term continuous ECG recording during 24 hours in 50 patients are presented. A comparison of these data with the results of a clinical examination and selective coronary angiography has revealed that patients with chronic ischaemic heart disease and distinct atherosclerotic changes in the coronary arteries have rhythm disorders twice as often as those free from ischaemic heart disease. The employment of the method of long-term continuous ECG recording during normal patients' activity will permit to evaluate the effect of different factors on the development of cardiac rhythm disorders.
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PMID:[Long-term ECG recording and cardiac rhythm disorders in patients with different conditions of the coronary arteries (according to the angiographic data)]. 6 39

Electrocardiograms recorded at rest in 4000 consecutive subjects who were clinically well at the time when they first attended a health screening centre for routine medical examination were analysed. In 9.5 per cent there were electrocardiographic abnormalities. The number in whom this abnormality was previously unsuspected represented 8.5 per cent of the total number of subjects. Previously undiagnosed ischaemic heart disease was found in 1.9 per cent but, excluding the subjects with chronic ischaemic heart disease, 1.8 per cent of all those who attended the Centre derived benefit from this single test, as it directly influenced their future clinical management.
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PMID:The value of electrocardiography in routine health screening. 13 11

Myocardial ischemia causes a series of anatomic and physiologic abnormalities that can be detected and quantified by assessment of myocardial perfusion, mechanical function, electrophysiology, and metabolism. These methods of assessment vary widely in sensitivity, specificity, relevance, cost, and ease of application. Although occasionally the appropriate choice of diagnostic procedures is clinically difficult, the demonstrated potential of coronary artery bypass surgery to reverse both acute and chronic myocardial ischemia makes the detection of ischemia an important effort in the care of patients with coronary artery disease.
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PMID:Detection of myocardial ischemia. 33 74

On comparing the results of study of the cardiohemodynamics indices under conditions of submaximum or threshold bicycle-ergometry load with the findings of echocardiography at rest in 64 patients with chronic ischemic heart disease, the authors conclude that echocardiography is a very promising method for ascertaining the cardiac muscular reserve, particularly in those patients with ischemic heart disease in whom the low coronary reserve does not allow the performance of tests under conditions of physical exertion.
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PMID:[Comparison of the echocardiographic indices of myocardial contractility and of the results of a bicycle ergometer test in chronic ischemic heart disease]. 59 15

A method is presented for the determination of serum lipid groups changes in conditions of venous fatty tolerance test as well as for time defining in reaching the initial levels of serum triglycerides. A variant of the quantitative thin-layer chromatography is applied, combined with carbonization and densitometry for lipid groups determination in the serum of 40 patients, subdivided into four groups: with chronic ischemic heart disease, with arterial hypertension, with obesity and a control ggroup. Lipid analysis was carried out by the 5th, 20th and 40th minute after the beginning of the test. After loading with Intralipid, it was established to develop quantitative changes not only in triglycerides but in the rest of the lipid groups as well. At the same time, the time for reaching the initial values of triglycerides, calculated by extrapolation, shows significant differences between the control group and those with ischemic heart disease and arterial hypertension. The investigation method adopted guarantees more thorough information about lipid changes after Intralipid infection, than the method with the determination of plasma opasity in corresponding time intervals. The criterion "time for reaching the initial values" characterized more fully the dynamic changes in triglycerides and could be used in the detection of latent anomalies in lipid metabolism.
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PMID:[Serum lipid group response after intralipid loading]. 67 2

Sixty three patients were examined. The diagnosis of all was made on the base of clinical picture, electrocardiographic examinations and the results from the selective coronarography. The following indices of the oxygen consumption and gas metabolism were analysed in the paper: oxygen consumption per kilogram body weight, oxygen consumption per kilogramometer work performed, labour effectivity and restoration coefficient. The results obtained reveal that the adaptation ability of the respiratory and cardiovascular system in conditions of physical loading was disturbed in patients with chronic ischemic heart disease. At the same time, the physical capacity for work and the restoration coefficient were also disturbed. The decrease of oxygen consumption per kilogram body weight, deteriorated labour effectivity, restoration coefficient and the increased oxygen consumption per kilogramometer work performed occur in parallel with the extension of the lesions of the coronary arteries and the diminution of coronary reserve. The results from those examinations, together with the results from a series of non-invasive methods for the examination of cardio-vascular system could aid the thorough diagnostic-prognostic character of ischemic heart disease and give a tentative idea for the stage of the coronary arteries lesions prior to coronarography.
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PMID:[Ergospirometry study of the functional state of the cardiovascular system in chronic ischemic heart disease]. 69 32

In 100 patients with chronic ischaemic heart disease and diffuse changes in the myocardium the data of 12 common ECG leads indicated that the corrected orthogonal leads according to Mac Fee--Parungao and Frank reflect these changes in all cases. The severity of the diffuse changes reflected in the deviations of the ST segment and the T-wave in the orthogonal leads corresponds to that reflected in the 12 common leads. A mathematical analysis of the waves of the QRS complex in the X, Y and Z leads indicates a growth of the left ventricular potentials with the development of diffuse myocardial changes. The mentioned systems of orthogonal leads can be recommended for wide employment for the diagnosis of diffuse changes in the myocardium in ischaemic heart disease.
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PMID:[Diagnosis of diffuse myocardial changes in ischemic heart disease using orthogonal ECG leads]. 97 67

Blood platelets change shape (from small round spheres to larger spread forms) as they participate in thrombosis. Using an electron microscopic technique, we surveyed 14 patients with both acute and chronic ischemic heart disease; each had increased spread platelet forms (69 plus and minus 22.2 [standard deviation] percent) when compared with 14 asymptomatic control subjects (P less than 0.001). When platelets from these 14 control subjects were exposed to plasma from the patients with ischemic heart disease, spread forms increased from 13.4 plus and minus 9.1 to 44.5 plus and minus 15.5 percent (P less than 0.001). There was no significant increase in spread platelets in these control subjects when their blood was mixed with plasma from another control group. Similar studies were performed in seriously ill noncardiac patients: 9 of 13 had increased spread platelet forms when compared with control subjects, but plasma from only 5 of these 9 subjects caused increased spread forms when mixed with platelets from normal subjects (P less than 0.05). Thus a factor existed in the plasma of these patients with ischemic heart disease that caused normal platelets to become spread. Similarly the plasma of some patients with serious noncardiac disease had a comparable effect on normal platelets. Although the identity of this factor is unknown, it is probably unrelated to hormonal or therapeutic influences occurring either during acute infarction or during the stress of serious illness because (1) the effect of the plasma from patients with acute ischemic heart disease was identical to that of patients with chronic ischemic heart disease, and (2) the effect was not present in all patients with serious noncardiac disease.
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PMID:Blood platelet response to plasma from patients with ischemic heart disease. 111 79

The influence of hypertonic mannitol on regional myocardial blood flow and ventricular performance was studied during acute myocardial ischemia in awake, unsedated and in anesthesized dogs and after myocardial infarction in awake unsedated dogs. Regional myocardial blood flow was measured with radioactive microspheres. Generalized increases in regional myocardial blood flow occurred after mannitol in all of the different animal models studied. The increases in coronary blood flow after mannitol were just as impressive in the nonischemic regions as in the ischemic portion of the left ventricle in all of the different models that were examined in this study. Improvement in regional myocardial blood flow to the ischemic area of the left ventricle after mannitol was associated with a reduction in ST segment elevation during acute myocardial ischemia in anesthetized dogs. The increases in regional myocardial flow after mannitol were also associated with increases in contractility, but the increases in flow appeared to be more impressive than the changes in contractility. The data obtained demonstrate that mannitol increases regional coronary blood flow to both ischemic and nonischemic myocardium in both anesthetized and awake, unsedated, intact dogs with acute and chronic myocardial ischemia and that mannitol reduces ST segment elevation during acute myocardial ischemia in anesthetized dogs. Thus the results suggest that under these circumstances the increases in regional myocardial blood flow after mannitol are of physiological importance in reducing the extent of myocardial injury. Since coronary blood flow increased to nonischemic regions the increases in regional myocardial flow demonstrated in this study after mannitol cannot be entirely explained by the mechanism of reduction in ischemic cell swelling.
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PMID:The influence of hypertonic mannitol on regional myocardial blood flow during acute and chronic myocardial ischemia in anesthetized and awake intact dogs. 112 27

In 152 patients with diabetes mellitus, chronic ischaemic heart diseases and hypertension the so-called ptf-product resulting from the height of the amplitude of P and its time of spreading) measured in the lead V1 (PV1-index), was determined and compared with the values of 93 persons with healthy heart. Patients of the groups of diseases mentioned showed significantly higher pathological values than persons with healthy heart (limiting value -0.02 mms). A comparison between patients with chromic ischaemic heart disease at the age of 36-55 years and a group of diabetics of the same age without the clinical signs of an ischaemic heart disease resulted in no statistically ascertained differences. But compared with a group of persons with healthy heart of the same age the groups clearly differed: 63.9% of pathological values in the total group of disease compared with 18.5% of pathological values in persons with healthy heart. In 137 patients with latent diabetes (protodiabetes) in 54.7% also pathological ptf-values were found. It is possible that the determination of the ptf-product is able to ascertain already early forms of a chronic ischaemic heart disease still before its clinical manifestation. The large number of pathological values in patients with protodiabetes could be a first reference to early beginning disturbances of the left-sided atrial activity in the sense of a microangiopathy.
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PMID:[Significance of the PV 1 index in the ECG of diabetes mellitus and in the early forms of chronic ischemic heart disease]. 119 71


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