الفهرس 
ObesityOnly 14 pages are availabe for public view
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Abstract
Objective: To estimate the prevalence of hypoxemia in a population of obese patients and to evaluate the role of CPAP in improving this hypoxemia.
Study design: A prospective study.
Study setting: The study was conducted at the Pitié salpêtrière hospital, Paris, France.
Patients: The study included 350 obese patients with a BMI > 30 kg/m2. All patients were subjected to full medical history taking, complete physical examination and arterial blood gas analysis.
Results: Thirty % of the patients had an increased P (A-a) O2 with mean PaO2 and P (A-a) O2 values of 71.7 ± 6.9 and 27.8 ± 5.4 respectively. CPAP normalized the P (A-a) O2 in 64 patients with no evidence of PE during the follow up period. In the remaining patients, CTPA confirmed PE in only 3 cases.
Conclusion: CPAP is a simple, non invasive and cost effective measure to improve the V/Q mismatch observed with obesity and may play a role to exclude suspected PE in obese subjects.