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Biomedical subjects

J D Jackman

Publications and source records attributed to J D Jackman.

11 recordsLinked to original sources
PubMed1992

Outcome of patients sustaining acute ischemic mitral regurgitation during myocardial infarction.

OBJECTIVE: To describe outcomes of patients sustaining an acute myocardial infarction complicated by mitral regurgitation managed with contemporary reperfusion therapies. DESIGN: Inception cohort case study. Long-term follow-up was obtained in 99% of all patients. SETTING: University referral center. PATIENTS: A series of 1,480 consecutive patients presenting between April 1986 and March 1989 who had emergency cardiac catheterization within 6 hours of infarction. Fifty patients were found to have moderately severe or severe mitral regurgitation. OUTCOME MEASURES: Mortality; follow-up cardiac catheterization in patients with regurgitation. RESULTS: Acute ischemic moderately severe to severe (3+ or 4+) mitral regurgitation was associated with a mortality of 24% at 30 days (95% CI, 12% to 36%), 42% at 6 months (CI, 28% to 56%), and 52% at 1 year (CI, 38% to 66%); multivariable analysis identified 3+ or 4+ mitral regurgitation as a possible independent predictor of mortality (P = 0.06). Patients with mitral regurgitation tended to be female, older, and to have cerebrovascular disease, diabetes, and preexisting symptomatic coronary artery disease. A physical examination did not identify 50% of patients with moderately severe to severe regurgitation. Acute reperfusion with thrombolysis or angioplasty did not reliably reverse valvular incompetence. In this observational study, the greatest in-hospital and 1-year mortalities were seen in patients reperfused with emergency balloon angioplasty, whereas patients managed medically or with coronary bypass surgery had lower mortalities. CONCLUSIONS: Moderately severe to severe (3+ or 4+) mitral regurgitation complicating acute myocardial infarction portends a grave prognosis. Acute reperfusion does not reduce mortality to levels experienced by patients with lesser degrees of mitral regurgitation nor does it reliably restore valvular competence.

Acute Disease↗
PubMed1992

Outcome after prolonged balloon inflations of greater than 20 minutes for initially unsuccessful percutaneous transluminal coronary angioplasty.

Prolonged balloon inflation with or without autoperfusion techniques is a common initial approach to major dissection or abrupt occlusion after percutaneous transluminal coronary angioplasty (PTCA). To assess such a strategy in the setting of unsuccessful angioplasty, 40 patients who underwent prolonged balloon inflations of greater than 20 minutes between January and July of 1991 after initially unsuccessful angioplasty were studied. These patients (median age 59 years) underwent PTCA for progressive or unstable angina (16[40%]), symptomatic or asymptomatic residual stenosis after myocardial infarction (10[25%]), acute myocardial infarction (3[8%]), stable angina (3[8%]), reinfarction (2[5%]), and other indications (6[15%]). The significant stenoses were primarily in the proximal and midportions of the right coronary (53%), left anterior descending (30%) and left circumflex (17%) coronary arteries. Before prolonged balloon inflation, the longest single inflation was 11 +/- 6 minutes and the total time of all inflations was 17 +/- 8 minutes (mean +/- standard deviation). Stenosis was reduced from 91 +/- 9 to 68 +/- 16% before prolonged inflation. After prolonged balloon inflation of 30 +/- 9 minutes, the residual stenosis was 47 +/- 21% (p = 0.0001 vs value before prolonged inflation). Furthermore, improvements in the appearance of filling defects or dissections, or both, occurred in 19 patients (48%). Procedural success was obtained in 32 of 40 patients (80%). Coronary bypass grafting was performed in 8 patients (20%): 4 after unsuccessful PTCA (3 emergently) and 4 electively after initially successful PTCA. Although 5 patients had creatine kinase-MB elevations greater than 20 IU/liter after the procedure, only 1 sustained a Q-wave myocardial infarction. There were no deaths in the hospital.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗
PubMed1992

The clinical manifestations of cardiac mucormycosis.

The manifestations of cardiac mucormycosis may dominate the clinical picture of disseminated mucormycosis. These manifestations include myocardial infarction, congestive heart failure, conduction system disease, valvular imcompetence and pericarditis. The development of such manifestations in a febrile compromised host with one or more predisposing factors should prompt consideration of disseminated mucormycosis in the differential diagnosis and initiation of appropriate diagnostic and therapeutic strategies.

Aged↗
PubMed1991

Gonococcal endocarditis: twenty-five year experience.

Gonococcal endocarditis is a devastating albeit rare complication of disseminated gonorrhea. It virtually disappeared as a disease entity with the advent of antibiotic therapy. Recently, it has reappeared with surprisingly high frequency for unclear reasons. Since 1983, the authors have observed six episodes of this disease in five patients, the largest series reported to date. It is predominantly a disease of young people without underlying valvular heart disease. Characteristic clinical features include a high frequency of congestive heart failure and nephritis and a proclivity for aortic valve involvement, commonly with associated ring abscess, and large vegetations. Genitourinary symptoms, arthralgias, and rash are uncommon. Previously undescribed features include involvement of all four valves simultaneously, recurrence on an aortic valve prosthesis, and a high frequency of terminal complement deficiencies. Precipitous hemodynamic deterioration despite appropriate therapy is not uncommon, and overall mortality rate remains an alarming 19%.

Adult↗
PubMed1990

Prevalence and clinical characteristics of a high cardiac output state in patients with multiple myeloma.

PURPOSE: This study was undertaken to define the prevalence and clinical characteristics of patients with a high cardiac output state associated with multiple myeloma. PATIENTS AND METHODS: Specifically, we evaluated clinical, laboratory, and two-dimensional and Doppler echocardiographic data in 36 patients with multiple myeloma. Cardiac output was determined noninvasively by a pulsed Doppler technique. RESULTS: A high cardiac output state, defined as a cardiac index greater than or equal to 4.0 L/minute/m2, was present in eight of 34 (23.5%) subjects in whom cardiac output was measurable. None of the known causes of high output states could be identified in these patients. Four patients developed high output congestive heart failure, two of whom died. Age, sex, degree of anemia, serum calcium level, immunoglobulin type, or disease stage did not differ significantly between subjects with or without high output states. However, severe bone involvement was significantly more frequent in those patients with high cardiac output states, occurring in all eight patients with high cardiac indexes compared with nine of 26 patients with low or normal cardiac indexes (p = 0.001). CONCLUSION: These data demonstrate that high cardiac output states are relatively common in patients with multiple myeloma and are associated with the presence of extensive bone disease.

Bone and Bones↗
PubMed1988

Rhodococcus equi pneumonia. An unusual early manifestation of the acquired immunodeficiency syndrome (AIDS).

Infection with Rhodococcus equi has been reported as an occasional cause of cavitary pneumonia in severely immunocompromised patients, including those with the acquired immunodeficiency syndrome (AIDS). We report two cases of R equi pneumonia presenting in one month in patients infected with human immunodeficiency virus (HIV) who had not previously had an opportunistic infection. The clinical and radiographic manifestations of the disease are distinctive and should suggest the diagnosis. R equi pneumonia in a person with HIV infection should be considered diagnostic of AIDS. Recognition of this entity is important since antibiotic therapy is different from that conventionally used in pneumonias in AIDS patients and must be prolonged.

Acquired Immunodeficiency Syndrome↗