EFFECT OF DURATION OF VENTILATION AND UNDERLYING ETIOLOGY ON THE OUTCOME OF PATIENTS RECEIVING VENTILATORY SUPPORT IN CORONARY CARE UNIT

Abstract

Objective: To determine the frequency of patients undergoing ventilatory support in coronary care unit of AFIC
& NIHD, Rawalpindi and to assess the association between duration of stay and etiology with outcome of the
patients.
Study Design: Comparative cross-sectional study.
Place and Duration of Study: Coronary Care unit (CCU-1) of Armed Forces Institute of Cardiology & National
Institute of Heart Diseases Rawalpindi, from 1st Jan2016 till 31st Dec2016.
Material and Methods: All the patients who underwent ventilatory support in coronary care unit during our
study period were included using consecutive sampling.Data collection tool comprising different demographic
and clinical variables related toventilatory support was used.
Results: There were 118 patients who underwent ventilatory support in coronary care unit-1 during our study
time period. The mean age of the patients was 61.2±4.8 years. Male patients were more in number 73(61.9%).The
most frequent etiology with which patients underwent ventilation was acute left ventricular failure (LVF) due to
myocardial infarction 59(50.2%), followed by arrhythmias. 69(58.5%) patients were on ventilation for less than 3
days while 49(41.5%) patients had duration of ventilatory support more than 3 days. Patients with acute left
ventricular failure 35(29.7%) had high mortality (p<0.01), followed by patients 12(10.2%) with arrhythmias
(p=0.46) then DCM 11(9.3%). Association between ventilation time and outcome of the patients exhibited that

Conclusion: Our study results yielded that underlying etiologies, co-morbidities and duration of ventilation stay
affect significantly on the outcome of the patients on ventilation in coronary care unit.