title: Risk factors for the development of postoperative pneumonia after cardiac surgery.
abstract: OBJECTIVE
  Identify risk factors that determine pneumonia development in patients who have undergone cardiac surgery.
  
  
  METHODS
  Prospective study of a single cohort in a postoperative intensive care unit at a tertiary care center, encompassing all patients undergoing cardiac surgery from January to July 2014.
  
  
  RESULTS
  31 postoperative pneumonia cases were enrolled out of 211 patients (14.6%). The following independent risk factors were identified: hypertension (OR: 3.94, p=0.01), chronic renal failure (OR: 13.67, p=0.02), reintubation (OR: 22.29, p=0.001) and extubation after 6h (OR: 15.81, p=0.005).
  
  
  CONCLUSIONS
  Main determinants for pneumonia after surgery were hypertension, chronic renal failure, extubation after 6h and reintubation.
authors.affiliation: Adult Cardiology at Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico.
authors.forename: Rafael
authors.initials: R
authors.lastname: Vera Urquiza
authors.affiliation: Surgical Intensive Care Unit at Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico. Electronic address: ebureta@gmail.com.
authors.forename: Eduardo Rafael
authors.initials: ER
authors.lastname: Bucio Reta
authors.affiliation: Cardiology Department at Hospital Español, Mexico City, Mexico.
authors.forename: Enrique Alexander
authors.initials: EA
authors.lastname: Berríos Bárcenas
authors.affiliation: Surgical Intensive Care Unit at Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico.
authors.forename: Tania
authors.initials: T
authors.lastname: Choreño Machain
mesh_terms: D000328:Adult; D000368:Aged; D006348:Cardiac Surgical Procedures; D015331:Cohort Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018410:Pneumonia, Bacterial / Q000453:epidemiology*; D011183:Postoperative Complications / Q000453:epidemiology*; D011446:Prospective Studies; D012307:Risk Factors
keywords: Cardiac surgery; Cirugía cardiaca; Factor de riesgo; Mexico; México; Neumonía postquirúrgica; Post-operative pneumonia; Risk factors