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PubMed1992

Left ventricular free-wall rupture occurring during programmed ventricular stimulation in a patient with recent myocardial infarction.

In this report we describe a patient who died during programmed ventricular stimulation due to a rupture of the left ventricular free wall at the site of a recent myocardial infarction. The patient was a 75-year-old male who presented with an extensive anterior wall myocardial infarction complicated by sustained ventricular tachycardia occurring 8 days after admission. Cardiac catheterization revealed total occlusion of left anterior descending coronary artery and an anteroapical aneurysm. The patient died due to electromechanical dissociation during electrophysiological testing 11 days after myocardial infarction. Postmortem examination showed a rupture of the left ventricular free wall at the site of the myocardial infarction and distant from the site of catheter placement. It is suggested that caution be taken in choosing patients for electrophysiological studies who have had recent large myocardial infarctions with ventricular aneurysm.

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PubMed1992

Technical improvements in the repair of acute postinfarction ventricular septal rupture.

Postinfarction ventricular septal rupture (VSR) is a high-risk complication following myocardial infarction (MI). Surgical treatment has evolved to improve an otherwise poor prognosis. Certain subsets of patients remain a formidable challenge. The presence of cardiogenic shock has consistently been found to have the highest risk. Over a 10-year period, our technique of repair has evolved from established procedures to one we believe confers superior results. Endocardial patching to viable myocardium reinforced with an epicardial patch not only corrects the shunt but maintains ventricular geometry and avoids tension on friable muscle. We report on a series of nine consecutive patients in cardiogenic shock. The operative mortality was 22%, none due to low cardiac output syndrome, shunt recurrence, or bleeding. All patients have been followed with transesophageal echocardiography at a mean period of 14 months (range 3-31 months). One patient is in New York Heart Association (NYHA) Class I, four are in NYHA Class II, and two in NYHA Class III.

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PubMed1992

Cardiac rupture after thrombolytic therapy: the use of aprotinin to reduce blood loss after surgical repair.

Emergency cardiac surgery after recent thrombolytic therapy is associated with increased blood loss. A patient underwent emergency repair of a ruptured left ventricle after intravenous streptokinase treatment for acute coronary occlusion. High dose aprotinin was given during the operation to reduce the expected blood loss. Surgical repair was successful without bleeding complications. Total postoperative blood loss was 365 ml.

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PubMedDate not supplied

[Doppler echocardiography in the diagnosis of mechanic complications of acute myocardial infarction].

OBJECTIVES: To evaluate the ability of bedside emergency Doppler/Echocardiographic (ECOCG/DP) studies in the diagnosis of mechanic complications during acute myocardial infarction (AMI). DESIGN: Retrospective analysis of 44 fatal AMI cases, studied by ECOCG/DP and with diagnostic confirmation by surgery and/or necropsy. SETTING: Patients (pts) with AMI admitted to an Intensive Care Unit of a tertiary Hospital (UCIM), Hospital de Santa Maria. PATIENTS: 44 fatal AMI cases were analysed (24 men and 20 women; mean age +/- SD: 72 +/- 9 years) and were divided in two groups according to Killip classification in Group 1 (III/IV): 35 pts and Group 2 (I/II): 9 pts. METHODS: ECOCG/DP was performed in a routine basis at admission, using all standard views and by subcostal view when in an emergency scenario. RESULTS: In 20 pts with bad left ventricular function (LVF) (Group 1) at admission, ECOCG/DP monitoring showed that death was due to worsening of LVF, which was confirmed by necropsy. In the other 15 pts of this group, ECOCG/DP documented the clinical diagnosis of cardiac rupture (free wall: 4 pts; papillary muscle: 4 pts; interventricular septum: 7 pts) which was confirmed by surgery and/or necropsy. In the 9 pts of Group 2, ECOCG/DP disclosed, at admission, good LVF in all. In 5 pts there was a sudden worsening clinical status, and ECOCG/DP showed a severe pericardial effusion with right chambers collapse, highly suggestive of free wall rupture also confirmed at necropsy. In the other 4 pts, ECOCG/DP showed aggravation of wall motion abnormalities and of LVF without rupture, once again in agreement with necropsy. Five clinical cases are presented for illustration of this issue. CONCLUSION: In the 44 fatal AMI cases of our study there was complete agreement between the ECOCG/DP and necropsy studies. In AMI patients, ECOCG/DP monitoring can in a routine basis, evaluate wall motion abnormalities and LVF. In an emergency setting ECOCG/DP can diagnose all the mechanic complications with a great certainty.

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PubMed1992

[Emergency surgery of acute coronary insufficiency].

In our centre, during the last five years, emergency operations (within 6 hours) and urgent operations (within 72 hours) have represented 1/4 of all coronary surgery. 295 patients (pts) have been operated on since 1972: of these, 279 with simple revascularization, 5 with combined major surgery, and 11 as a consequence of mechanical complications of acute myocardial infarction. These last were all in cardiogenic shock: the overall 30-day mortality rate was 5.4% (3.6% in those pts with simple revascularization, 20% in those with combined major surgery, and 45.4% in pts with cardiogenic shock). In the subgroup with simple revascularization, the incidence of non fatal perioperative acute myocardial infarction (AMI) was 4.7% in 253 pts with unstable angina, 52.2% in 23 pts with abrupt closure during coronary angioplasty, and obviously 100% in 3 pts surgically treated during evolving AMI. We were able to identify in the univariate analysis as the only 30-day risk mortality factors: 1) a reduced ejection fraction (< 30%) and 2) the combination with endarterectomy. Other factors (female sex, age > 70, severity of angina, diffuse coronary artery disease and more than 3 by pass grafts) have shown a tendency to increase the mortality rate without statistical significance. No deaths occurred in pts revascularized in emergency situations due to coronary angioplasty complications. In recent years emergency and urgent coronary surgical operations have been increasing, with an increase in pts with higher risk factors. In pts with simple revascularization, 30-day mortality and incidence of myocardial infarction are similar to those of elective surgery. In pts with abrupt closure as a consequence of coronary angioplasty the mortality rate seems very low, while the incidence of infarction remains extremely high. These observations have allowed the development of an integrated protocol of intervention in acute unstable coronary syndromes.

Acute Disease↗
PubMed1992

[Interventricular rupture following myocardial infarction. Surgical treatment and long-term follow-up].

The natural course of post myocardial infarction ventricular septal defect is towards cardiogenic shock and death. 50% in the first week, over 90% a year latter. Between 1973-1989, 28 patients where operated on. Before surgery 14 patients (53%) where in Killip IV, 5 patients (19%) in III, 5 patients (19%) in II and 2 patients in I. The repair was accomplished under hypothermia and cardioplegia, with the insertion of a Teflon patch to close the defect in 20 patients (70%). Complementary procedures (CABG, Pacemaker, repair of dissections) were performed in 12 patients (47%). Three patients (10%) could not be weaned from the pump; another 10 (36%) died before discharge: 2 with multisystem failure and sepsis, the other 8 with cardiogenic shock (4 with residual VSD). The only independent predictor of operative mortality, by univariate analysis, was preoperatory cardiogenic shock. All 15 survivors (100%) where followed between 5 months and 14.5 years (mean 104.5 months). Two patients died at 4 years, one at 10, another at 10.5 years. The actuarial probability of being alive after discharge was 100% at 4 years, 75% at 5, and 50% at 10 years. At last follow up only 2 patients had mild dyspnea, the remaining where asymptomatic. Surgical treatment provides an opportunity to improve this otherwise dismal survival and offers a surprising good long term result. An early diagnosis and efficient repair, before the onset of cardiogenic shock, should provide better results.

Actuarial Analysis↗
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.

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