Overwhelming pneumonia

A three-year study of severe community-acquired pneumonia with emphasis on outcome

Fifty-eight consecutive patients with severe community-acquired pneumonia were studied prospectively during a three-year period. The group included 44 men and 14 women (mean age: 45.0 +/- 15.7 years). The cause of pneumonia was diagnosed in 35 (60.3 percent) cases, and the most common pathogens were Streptococcus pneumoniae (37.1 percent), Legionella pneumophila (22.8 percent) and Gram-negative bacilli (11.4 percent). The fact that Mycobacterium tuberculosis was present in four (11.4 percent) patients and Pneumocystis carinii in three (8.5 percent) is worthy of note. The overall death rate was 22.4 percent. More than 50 percent of deaths occurred within the first five days and were caused by septic shock, hemoptysis (tuberculosis) or hypoxia. However, hypoxia remains the main fatal complication and all late-occurring deaths (> 5 days) observed were due to this cause. These data could be important in planning strategies and protocols to improve prognosis.

The role of salivary function on oropharyngeal colonization

Aspiration of oropharyngeal flora is the most common route of acquiring Gram-negative pneumonia, a major nosocomial infection. Epidemiologic studies indicate that the elderly are at increased risk for developing these life-threatening pneumonias. The primary objective of this study was to determine the effects of salivary oral defenses against Gram-negative colonization. The study population consisted of 41 male outpatients, age 70 and older, seen at the Denver VAMC. The group included subjects with both diminished and normal salivary flow. Each subject answered a questionnaire regarding overall health, medication use, and symptoms of salivary dysfunction. We then collected whole saliva, unstimulated and stimulated parotid saliva, and performed a throat swab on each patient. For each throat culture, analysis was done to identify Gram-negative bacteria. Flow rates between colonized (n = 6) and noncolonized subjects (n = 34) were compared. While there were no significant differences in the flow rates between the two groups, a trend was noticed in that flow rates were lower for all three flow measures in the colonized group (whole, 22% decrease; unstimulated, 22% decrease; and stimulated, 28% decrease). These preliminary findings suggest that subjects with diminished salivary flow may possibly be at increased risk for oropharyngeal Gram-negative colonization. Research on the role that saliva plays in oropharyngeal bacterial colonization is continuing.

Monitoring chronic outpatient infections: providing comprehensive home healthcare pharmacy services

Management of acute illness has been increasingly shifted to community practitioners. Expansion of community pharmacy into home healthcare has brought new opportunities and responsibilities to community practitioners. These practitioners are gaining expertise in total parenteral nutrition, intravenous infusion systems, intravenous catheters, parenteral antibiotics, and clinical pharmacokinetics--areas historically managed by hospital and long-term care facility pharmacists. This shift to community pharmacy-based care has brought with it the need for community pharmacists to develop expertise in therapeutic monitoring of chronic disease states. Dose adjustment of medications based upon careful analysis of blood concentrations is no longer limited to institutional pharmacy practice. Community pharmacists now must master basic infectious disease principles and possess internal medicine knowledge to ensure appropriate monitoring of their patients. This article discusses several disease states currently managed with community pharmacy-based home healthcare, summarizing basic monitoring parameters for comprehensive patient care, and provides sample supply lists and documentation forms for home healthcare providers.

Intensive care management of community-acquired Klebsiella pneumoniae

The clinical features of 18 patients with Klebsiella pneumoniae requiring intensive care unit (ICU) management are presented. All patients required ventilatory support; 17 were given constant positive pressure ventilation and 10 required greater than 10 cm positive end expiratory pressure. The clinical picture was characteristic: pre-existing medical disease, clinical features of severe pneumonia and copious purulent bronchial secretions, Gram--ve organisms on Gram's stain and lobar consolidation on the chest radiograph were common. Septicaemic shock, confusion and uncompensated metabolic acidosis were the presenting clinical features predicting a poor outcome. Antimicrobial chemotherapy, that combined an aminoglycoside and a third generation cephalosporin to ensure adequate early antibiotic serum levels, may help to improve the prognosis.