title: Impact of coronary artery bypass grafting in elderly patients.
abstract: OBJECTIVE
  To analyze the results of isolated on-pump coronary artery bypass graft surgery (CABG) in patients > 65 years-old.
  
  
  METHODS
  Patients undergoing isolated on-pump CABG from December 1st 2010 to July 31th 2012 were divided in two groups: GE (elderly > 65 years-old, n=103) and GA (adults < 65 years-old, n=150). Preoperative data, intraoperative (as cardiopulmonar bypass time, aortic clamping time, time length of stay in mechanical ventilation--MV--and number of grafts), and postoperative variable (as morbidity, mortality and time length of stay in hospital) were analyzed during hospitalization.
  
  
  RESULTS
  In GE, the morbidity rate was greater than in GA (30% vs. 14%, P=0.004), but there was no difference in the mortality rate (5.8% vs. 2.0%, P=0.165). In GA, there was higher prevalence DM (39.6% vs. 27%, P=0.043) and smoking (32.2% versus 19.8%, P=0.042); and in GE, higher prevalence of stroke (17% vs. 6.7%, P=0.013). There was no difference between the groups regarding intraoperative variables. After multivariate analysis, age > 65-year-old was associated with greater morbidity, but it was not independent predictive factor for in-hospital mortality. Considering in-hospital mortality, stay in ward time length (P=0.006), cardiac (P=0.011) and respiratory complications (P=0.026) were independent predictive factors.
  
  
  CONCLUSIONS
  This study suggests that patients > 65-year old were at increased risk of postoperative complications when submitted to isolated on-pump CABG in comparison to patients < 65-year-old, but not under increased risk of death.
authors.affiliation: Hospital de Cardiologia Doutor Pedro Bertoni da Associação de Caridade da Santa Casa do Rio Grande, Rio Grande, RS, Brasil. priaikawa@hotmail.com
authors.forename: Priscila
authors.initials: P
authors.lastname: Aikawa
authors.forename: Angélica Rossi Sartori
authors.initials: AR
authors.lastname: Cintra
authors.forename: Cleber Aparecido
authors.initials: CA
authors.lastname: Leite
authors.forename: Ricardo Henrique
authors.initials: RH
authors.lastname: Marques
authors.forename: Claudio Tafarel Mackmillan
authors.initials: CT
authors.lastname: da Silva
authors.forename: Max dos Santos
authors.initials: Mdos S
authors.lastname: Afonso
authors.forename: Felipe da Silva
authors.initials: Fda S
authors.lastname: Paulitsch
authors.forename: Evandro Augusto
authors.initials: EA
authors.lastname: Oss
mesh_terms: D000367:Age Factors; D000368:Aged; D001938:Brazil; D001026:Coronary Artery Bypass / Q000009:adverse effects* / Q000401:mortality*; D004812:Epidemiologic Methods; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000401:mortality*; D013997:Time Factors; D016896:Treatment Outcome