title: Pressure-controlled mechanical ventilation is more advantageous in the follow-up of patients with chronic obstructive pulmonary disease after open heart surgery.
abstract: OBJECTIVE
  Cardiopulmonary bypass deteriorates pulmonary functions to a certain extent. Patients with chronic obstructive pulmonary disease (COPD) are associated with increased mortality and morbidity risks in the postoperative period of open-heart surgery. In this study we compared 2 different mechanical ventilation modes, pressure-controlled ventilation (PCV) and volume-controlled ventilation (VCV), in this particular patient population.
  
  
  METHODS
  Forty patients with severe COPD were assigned to 1 of 2 groups and enrolled to receive PCV or VCV in the postoperative period. Arterial blood gases, respiratory parameters, and intensive care unit and hospital stays were compared between the 2 groups.
  
  
  RESULTS
  Maximum airway pressure was higher in the VCV group. Pulmonary compliance was lower in the VCV group and minute ventilation was significantly lower in the group ventilated with PCV mode. The respiratory index was increased in the PCV group compared with the VCV group and with preoperative findings. Duration of mechanical ventilation was significantly shorter with PCV; however, intensive care unit and hospital stays did not differ.
  
  
  CONCLUSIONS
  There is not a single widely accepted and established mode of ventilation for patients with COPD undergoing open-heart surgery. Our modest experience indicated promising results with PCV mode; however, further studies are warranted.
authors.affiliation: Department of Cardiovascular Surgery, Istanbul University Istanbul Medical Faculty, Istanbul, Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Ugurlucan
authors.affiliation: Department of Cardiovascular Surgery, Istanbul University Istanbul Medical Faculty, Istanbul, Turkey.
authors.forename: Murat
authors.initials: M
authors.lastname: Basaran
authors.affiliation: Cardiovascular Surgery Clinic, Istanbul Cerrahi Hospital, Istanbul, Turkey.
authors.forename: Filiz
authors.initials: F
authors.lastname: Erdim
authors.affiliation: Cardiovascular Surgery Clinic, Istanbul Cerrahi Hospital, Istanbul, Turkey.
authors.forename: Ozer
authors.initials: O
authors.lastname: Selimoglu
authors.affiliation: Cardiology Clinic, Bakirkoy Dr. Sadi Konuk Education and Research Hospital, Istanbul, Turkey.
authors.forename: Ilker Murat
authors.initials: IM
authors.lastname: Caglar
authors.affiliation: Cardiology Clinic, Maslak Acibadem Hospital, Istanbul, Turkey.
authors.forename: Ertugrul
authors.initials: E
authors.lastname: Zencirci
authors.affiliation: Department of Cardiovascular Surgery, Maltepe University Medical Faculty, Istanbul, Turkey.
authors.forename: Ugur
authors.initials: U
authors.lastname: Filizcan
authors.affiliation: Cardiovascular Surgery Clinic, Medistate Hospital, Istanbul, Turkey.
authors.forename: Noyan Temucin
authors.initials: NT
authors.lastname: Ogus
authors.affiliation: Cardiovascular Surgery Clinic, Pendik Bolge Hospital, Istanbul, Turkey.
authors.forename: Yahya
authors.initials: Y
authors.lastname: Yildiz
authors.affiliation: Department of Cardiovascular Surgery, Istanbul University Istanbul Medical Faculty, Istanbul, Turkey.
authors.forename: Emin
authors.initials: E
authors.lastname: Tireli
authors.affiliation: Cardiovascular Surgery Clinic, Pendik Bolge Hospital, Istanbul, Turkey.
authors.forename: Omer
authors.initials: O
authors.lastname: Isik
authors.affiliation: Department of Cardiovascular Surgery, Istanbul University Istanbul Medical Faculty, Istanbul, Turkey.
authors.forename: Enver
authors.initials: E
authors.lastname: Dayioglu
mesh_terms: D001026:Coronary Artery Bypass / Q000009:adverse effects* / Q000534:rehabilitation*; D004311:Double-Blind Method; D005246:Feedback; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000175:diagnosis* / Q000534:rehabilitation*; D012121:Respiration, Artificial / Q000379:methods*; D016896:Treatment Outcome