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Objectives: There is limited information regarding distribution of Pulmonary Diseases (PD) in Oman. Pulmonary Function Tests (PFT) outcome patterns could be a pointer to an indirect indication of the distribution of PD. This study aimed to document distribution of PFT outcomes among Omani adult patients. Methods: This retrospective cross-sectional study was conducted from January to December 2015 at a tertiary hospital in Oman. A total of 1,118 adults referred for PFTs during this period were included. Results: There were 605 (54.1%) female and 513 (45.9%) male patients. The mean age was 47.11±18.1 years. Most underwent spirometry with reversibility (36.8%) or full lung function testing with reversibility (29.7%). Of the 1,064 patients with conclusive PFT outcomes, 39.9% had normal findings, followed by 26.1% with obstructive defects, 19.6% restrictive defects and 10.6% had mixed obstructive/restrictive defects. Conclusion: This study generated important preliminary data regarding PFT outcomes (defects) in Omani patients.

Keywords: Pulmonary Function Tests; Spirometry; Pulmonary Diseases; Asthma; Chronic Obstructive Pulmonary Disease; Oman.

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Al Jabri, A., Al Hinai, R., Balaji, R., Al Harrasi, S., Al Rajaibi, H., & Jaju, D. S. (2021). Pulmonary Function Test Outcomes in Adult Omani Patients: Preliminary findings of single-centre study. Sultan Qaboos University Medical Journal [SQUMJ], 1(1).