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PubMed1990

A clinicopathologic comparison of acute myocardial infarction in the elderly Chinese and American.

A prospective study was done on 110 patients, 55 Chinese and 55 American elderly who had clinically proved acute myocardial infarction with histologic confirmation. The Chinese patients were much more likely to have typical pain than the American (65.4% vs 49.0%). The incidence of painlessness was only 18.1% vs 36.3%. The difference has statistical significance (P less than 0.05). Cardiac failure, shock, pulmonary infection as a major complication had no statistical significance, but the incidence of cardiac rupture group was 29.0% vs 10.9%. Ventricular fibrillation incidence was 18.1% in the Chinese vs 45.4% in the American. The incidence of recent occlusive coronary thrombi, hemorrhage and rupture of plague in coronary arteries had significant statistical difference. The incidence of triple, double and single vessel diseases were 41.8%, 29.0% and 27.2% in the Chinese group vs 36.3%, 27.2% and 25.4% in the American respectively.

Aged↗
PubMed1990

[Echocardiographic documentation of the instant of cardiac rupture: a case report].

The instant of cardiac rupture was initially recorded using two-dimensional echocardiography in a patient with acute myocardial infarction. This 70-year-old woman was admitted to our hospital because of chest pain lasting for six hours. The admission electrocardiogram showed Q waves and S-T segment elevations in leads I, aVL, and V4-6. Two-dimensional echocardiography revealed hypokinesis in the middle and apical portions of the anterior septum and hyperkinesis in the basal portion of the anterior septum and the posterior wall. When the patient suddenly lost consciousness, echocardiography detected a rapidly developing pericardial effusion, which filled the pericardial sac within 13 sec. A myocardial tear was recognized at the apex of the left ventricle between portions of the hypokinesis and hyperkinesis. A simultaneously-recorded electrocardiogram showed sinus rhythm (84/min) which did not change at the moment of rupture and lasted further for 15 sec until a sudden alteration to sinus bradycardia (46/min) occurred. Cardio-pulmonary resuscitation was unsuccessful and the patient died. This is the first such case in the medical literature in which the instant of cardiac rupture was recorded. Detailed reviews of the video tapes revealed that rapid accumulation of pericardial fluid occurred, followed by transient sinus bradycardia, most likely due to vagal reflex to the stretched pericardium.

Aged↗
PubMed1990

Surgical repair of postinfarction ventricular septal defect.

Thirty-one patients underwent repair of postinfarction ventricular septal defect (VSD) from 1980 to 1989. All patients were in New York Heart Association functional class IV, and 15 of them were in cardiogenic shock when operated on. Coronary arteriography was performed in all patients before surgery: nine had one-vessel, 11 had two-vessel, and 11 had three-vessel disease. The VSD was anterior in 15 patients and posterior in 16. The operative technique evolved over the years from a fairly extensive infarctectomy and reconstruction of the septum and right and left ventricular walls with a double Dacron patch, to minimal or no infarctectomy and closure of the VSD by excluding the infarcted muscle from the left ventricular cavity. This is accomplished by suturing a single patch of bovine pericardium to healthy endocardium surrounding the infarcted muscle. The right ventricle is left intact. Overall mortality was 10%, with three operative deaths. All deaths occurred in patients in cardiogenic shock who had three-vessel coronary artery disease. Thus, the mortality for patients in shock was 20%, and the mortality for patients with three-vessel disease was 27%. The operative mortality for patients with posterior VSD was twice as high as in patients with anterior VSD. However, univariate analysis of various clinical, hemodynamic, and operative variables indicated that only three-vessel disease was predictive of operative mortality. Because the number of patients was small and the overall operative mortality relatively low, the results of this analysis may not be valid.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗
PubMed1990

[Hemorrhagic cardiac tamponade without heart rupture during a myocardial infarct. A clinical case].

Cardiac tamponade during acute myocardial infarction is a life-threatening complication that can be confounded with right ventricular infarction. The most frequent cause of this complication is cardiac rupture. We report here a patient with acute myocardial infarction that developed cardiac tamponade on day 7, after receiving late systemic thrombolysis. The diagnosis was suspected with echocardiography and confirmed with hemodynamic measurements. The tamponade was partially relieved with pericardiocentesis but afterwards required emergency surgery. No cardiac rupture was found but an hemorrhagic infarction. We conclude that in this case the hemorrhagic tamponade was probably related both to late thrombolysis and to post infarction pericarditis.

Adult↗
PubMed1990

[Clinico-pathological observations in myocardial rupture].

In their material of 10 years authors describe 42 myocardial ruptures developed as complication of acute myocardial infarct. The rupture developed in the acute stage of infarct. Rupture of anterior wall infarct is the most frequent. The most decisive clinical factor in development of rupture is the loading in acute stage, from pathologic aspect the strongly infiltrated, transmural infarct is considered the most decisive pathologic factor. Diabetes mellitus and hypertonia can predispose to myocardial rupture.

Heart Rupture, Post-Infarction↗
PubMed1990

[Heart wall rupture as a grave complication of acute myocardial infarct].

The rupture of the heart wall is a severe complication of the acute myocardial infarction. We found it in 3.5% of the deceased patients with an acute myocardial infarction. The average age of these patients was 71 years. 75% of the patients died during the first five days after the event of the myocardial infarction. Apart from elderly patients with myocardial infarction such ones with a transmural myocardial infarction in the region of the left ventricle, an enlargement of the heart and signs of an insufficiency of the left heart, with a hypertension and diabetes mellitus seemed to be endangered. These patients need the most exact control and observation and in case of suspicion (symptomatology of angina pectoris which is continuing to exist) of a developing rupture of the heart wall and aimed diagnostics (echocardiography) and therapy must be begun immediately.

Acute Disease↗
PubMed1990

Methylprednisolone interventions in myocardial infarction: a controversial subject.

Myocardial infarction is a dynamic evolutionary process which can progress over a relatively prolonged interval after its onset. The ultimate extent of damage depends on coronary artery anatomy, the balance between myocardial oxygen supply and demand, and metabolic modulators of myocardial injury. The possibility that methylprednisolone, a synthetic anti-inflammatory corticosteroid, may exert a beneficial effect on ischemic myocardium has been studied in both animal models and patients. However, the results of these experimental and clinical investigations have been controversial, in that some have demonstrated efficacy of the drug to limit extension of evolving myocardial infarction, while others have not. The effects of dose regimen and duration of methylprednisolone administration on preservation of myocardium and infarct size remain unclear, especially in clinical studies. The problem resides in the large interindividual variations among patients in degree and distribution of coronary disease, concomitant drugs, the accuracy of techniques for measuring and monitoring changes in myocardial infarct size, and the small numbers of patients involved in the majority of these studies. The absence of clarity will continue to cast doubts over the use of methylprednisolone until its marked beneficial effects can be significantly demonstrated.

Animals↗
PubMed1990

[Differences between men and women in fatal cases of myocardial infarction: study of 200 necropsies].

PURPOSE: To compare morphological characteristics from myocardial infarction (IM) in men and women in 200 consecutive necropsies. MATERIAL AND METHODS: Necropsy heart findings from 62 female cases compared with those from 138 male cases, from patients who died from transmural myocardial infarction. Age ranged from 21 to 82 (mean 60) years. RESULTS: Concerning the coronary arteries, the number of 3 major (right, left anterior descending and left circumflex) epicardial coronary arteries narrowed at some point greater than 70% in cross-sectional area by atherosclerotic plaque was not significantly different; on the other hand, there were more severe lesions in the left main coronary artery in men (10.33%) than in women (1.64%) (p = 0.050). 33.33% of men and 43.55% of women had only recent myocardial infarction (1 month or less); 33.33% of men and 14.52% of women had only old myocardial infarction (more than 1 month); 33.33% of men and 41.94% of women had both recent and old myocardial infarction. 12.90% of women and 2.17% of men showed rupture of the left ventricle (p = 0.0220). 15.22% of men and 6.45% of women had left ventricular aneurysms (p = 0.830). CONCLUSION: There are more deaths during the acute phase of MI, in the first infarction and from rupture of the left ventricle in female patients; in men, there are more deaths occurring in chronic phases of the disease and with previous myocardial infarction; and more severe narrowing from the left main coronary artery.

Adult↗
PubMed1990

Rupture of both left ventricular papillary muscles following acute myocardial infarction.

A 77-year-old woman collapsed shortly after arrival at the emergency department and attempts at resuscitation were unsuccessful. Autopsy revealed an evolving recent transmural myocardial infarct in the posterolateral free wall of the left ventricle with rupture of both papillary muscles. No well documented description of post infarction dual papillary muscle rupture was found in the literature.

Aged↗
PubMedDate not supplied

Apparent rupture of the ventricular septum after myocardial infarction in an infant with congenital heart disease.

Clinical and angiocardiographic simulation of rupture of the interventricular septum, in an infant with an endocardial cushion defect and documented myocardial infarction is reported. Close straddling of a proven congenital muscular apical ventricular septal defect by trabeculae carne is believed to have led to the angiocardiographic simulation of a post-infarction apical ventricular septal defect. In the surgical approach to post-infarction ventricular septal defects, the implication of such a simulation could be important.

Heart Rupture↗
PubMed1979

[Surgery of ventricular aneurysms and akinetic zones].

Operation was performed in 180 patients with post-infarction ventricular aneurysm (12 cases) or akinesia (92 cases). Simultaneously in 2 cases mitral valve replacement was performed and in 2 cases ruptured ventricular septum was treated by patch. The results are reported and discussed.

Adult↗
PubMed1979

[False aneurysm associated with mitral insufficiency due to rupture of the heart at the point of insertion of the anterior papillary muscle. A successfully operated case].

Although rupture of a mitral papillary muscle during myocardial infarction is well known, and post-infarction transmural ruptures causing false aneurysms occasionally reported, the association of rupture of the anterior papillary muscle and a underlying transmural parietal rupture giving rise to a false aneurysm is quite exceptional, and, to the best of our knowledge, has not previously been reported. Despite the serious nature of the disease, surgical cure of the aneurysm with mitral valve replacement was successful, due to the limitation of the anatomical disruption by early pericardial symphysis.

Aneurysm↗
PubMed1976

Post-infarction cardiac rupture.

Three allied conditions are described in this paper: (i) haemopericardium with cardiac rupture (5 cases); (ii) haemopericardium without rupture (2 cases); (iii) pseudoaneurysm (1 case). In the first 2 of these, the significant features were clinical deterioration with shock 3 or more days after infarction, recurrent cardiac pain, cardiac tamponade, and immediate or later ineffectiveness of counterpulsation. An additional feature in the second group was the development of haemopericardium after heparin therapy. In the third group, infarction followed by left ventricular failure and progressive cardiac enlargement was the significant feature. An apical systolic murmur was not present, as a false sac had not been formed. Ante-mortem diagnosis depends upon an appreciation of these features. Without it successful surgery is impossible. There were 4 survivors in this group of 8 patients.

Aged↗
PubMed1990

[Mitral valve replacement in post-infarction rupture of the papillary muscle. Apropos of 13 cases surgically treated during the acute phase of infarction].

Between 1983 and 1988, thirteen patients (12 men and 1 women, average age 63 years) were operated in the acute phase of myocardial infarction for papillary muscle rupture (PMR). The rupture involved the posterior papillary muscle in 12 cases. The average left ventricular ejection fraction was 47 +/- 9 per cent (range 34 to 63%). Pulmonary capillary pressures ranged from 76 to 41 mmHg (average 35 mmHg). Eleven patients presented with acute pulmonary oedema and 7 had cardiogenic shock. Coronary arteriography showed triple vessel disease in 3 cases, double vessel disease in 7 cases and single vessel disease in 3 cases. Surgery was carried out on average 2.7 days after the rupture and 10 days after the initial infarct. In addition to mitral valve replacement (N = 13), 11 patients underwent a myocardial revascularisation procedure. The operative mortality was 15 per cent (N = 2). Papillary muscle rupture in the acute phase of myocardial infarction causes cardiac failure which is related more to the mechanical abnormality than to an alteration of left ventricular function. Considering the operative mortality and the natural history of PMR treated medically, the authors recommend early surgery as the only management which can improve the precarious haemodynamic status of patients with this complication.

Aged↗
PubMed1990

[Post-infarction pseudoaneurysm of the left ventricle as a cause of heart failure. Presentation of a surgically treated case].

Pseudoaneurysm of the left ventricle is an unusual complication of myocardial infarction. Surgical resection is justified by the high risk of rupture. Patients may be asymptomatic, more often a clinical state of chronic heart failure is present. We report on a patient who successfully underwent urgent resection of a large pseudoaneurysm which was the cause of acute heart failure.

Emergencies↗