title: [Prognosis in patients with pneumonia and chronic obstructive pulmonary disease].
abstract: OBJECTIVE
  To study the incidence, severity, and mortality rates of pneumonia in a cohort of chronic obstructive pulmonary disease (COPD) patients monitored over 3 years.
  
  
  METHODS
  A total of 596 patients diagnosed with COPD according to spirometric criteria were included in the study. The variables assessed were mortality and severity according to the Pneumonia Severity Index (PSI) for community-acquired pneumonia (CAP).
  
  
  RESULTS
  Of the 596 patients included in the study, 75 (12.6%) developed at least 1 episode of pneumonia during the 3 years of the study. The overall incidence of pneumonia was 55.1 per 1000 person-years. There were 88 episodes in 75 patients. COPD severity, evaluated based on percentage of predicted FEV1, was mild in 9 patients, moderate in 24, and severe in 42. Seventy-six (86.3%) episodes were CAP and 12 (13.6%) were acquired in hospital. Fourteen CAP cases corresponded to PSI group V, 28 to group IV, 20 to group III, and 14 to groups I and II. Overall mortality was 12.5% (11/88). The mortality rate was 41.7% (5/12) for nosocomial cases and 7.8% (6/76) for CAP cases (OR, 6.67; 95% confidence interval, 1.65-26.93). Assessing CAP mortality by level of severity, we found that the mortality rate was 35.7% (5/14) for group V and 3.5% (1/28) for group IV. No deaths occurred among patients in the other severity groups.
  
  
  CONCLUSIONS
  The incidence of pneumonia in COPD patients is high. More than half the cases of CAP (55.2%) in our COPD patients were classified in PSI risk groups IV and V.
authors.affiliation: Servicio de Neumología, Hospital Universitario de Valme, Sevilla, Spain. mercedesmerino@terra.es
authors.forename: M
authors.initials: M
authors.lastname: Merino-Sánchez
authors.forename: I
authors.initials: I
authors.lastname: Alfageme-Michavila
authors.forename: N
authors.initials: N
authors.lastname: Reyes-Núñez
authors.forename: J
authors.initials: J
authors.lastname: Lima-Alvarez
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D011014:Pneumonia / Q000453:epidemiology* / Q000209:etiology*; D011379:Prognosis; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications* / Q000453:epidemiology