Curr Health Sci J, vol. 44, no. 3, 2018

Prediction of Post Operative Complication in Patients with Valvular Heart Surgery Based on O2 Challenge Test and A-a Gradient

[Original Paper]

H.A. SADEGHI(1), S. SADEGHI(2), B. GHADRDOOST(1)


(1)Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran,
(2)Iran University of Medical Sciences, Tehran, Iran


Abstract:

Patients with valvular heart diseases may have more physiological lung derangements and therefore at current study we studied correlation of O2 challenge, A-AG tests and spirometry values of patients who underwent valve surgery on post op respiratory complications. Method: 180 adult patients undergoing non-emergency cardiac valvular surgery were studied. On operating room all patients had arterial blood gas profile (ABG) at room air, 20 minutes after putting on ventilator with 100% O2, and pump oxygenator. Pulmonary function tests, alveolar Oxygen Pressure, mean Arterial pressure of carbon dioxide and alveolar-arterial gradients measured. Results: FEV1, FVC and FEV1/FVC%, pressure of arterial Blood Gasses (O2 and CO2) with fraction of inspired oxygen of 100% and air (PO2-100 and PO2-air), were significantly different between patients with POPC and patients without POPC (p-value <0.05). Indeed PO2-100 and PO2-air were significantly lower in patients with POPC. A-AG100 (p-value: 0.02) an


Keywords:
Post op complications, valvular heart diseases, pulmonary function tests, O2 challenge tests, alveolar arterial gradients



Corresponding:
Behshid Ghadrdoost, Behshid.ghadrdoost@yahoo.com, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran


DOI 10.12865/CHSJ.44.03.10 - Download PDF