Twenty-eight alcoholic patients with community-acquired pneumonia who
were admitted to a referral medical center during a 3-year period were
reviewed. All were men and with few exceptions were heavy smokers. Th
e overall mortality was 64.3%. The most dramatic group was that of 11
patients (39.3%) with bacteremic Klebsiella pneumoniae pneumonia (BKPP
), which had high mortality rate (100%), short onset of illness before
hospital admission (42.6+/-8.2 h, mean+/-SD), and short survival time
after the admission (24.6+/-7.9 h). All these 11 patients needed inte
nsive care unit (ICU) management and ventilatory support. Arterial blo
od gas values showed marked hypoxemia and metabolic acidosis in most o
f these 11 patients, and presence of shock at arrival in the hospital
was noted in 8 patients. Acute renal failure and disseminated intravas
cular coagulation developed in six patients. Chest radiographs showed
pleural effusion and radiographic spread in nearly 50% of patients. Co
mbination chemotherapy consisting of one aminoglycoside and one second
- or third-generation cephalosporin was initiated in all patients. The
rapidly fatal outcome of these 11 patients with BKPP despite manageme
nt with adequate antibiotics and intensive care indicated the fulminan
t nature of this disease. High virulence of the microorganism, altered
immune response, and increased susceptibility to infection may all ha
ve contributed to the fulminancy in this group of patients. The diseas
e continues to present many difficulties in management.