The Effect of Change in Posture on Spirometry in Patients with Obstructive Sleep Apnoea Syndrome
Journal Title: Sultan Qaboos University Medical Journal - Year 2019, Vol 19, Issue 4
Abstract
Objectives: Obstructive sleep apnoea syndrome (OSAS) is a growing health concern as it is associated with serious comorbidities. OSAS is mainly related to obesity, age, gender and a narrowed upper airway is commonly seen in patients with OSAS. This study aimed to compare spirometry parameters between obese OSAS patients and non-obese OSAS patients when patients moved from sitting to supine. Methods: This cross-sectional study was conducted at Sultan Qaboos University Hospital, Muscat, Oman, between December 2009 and December 2010. Patients with severe OSAS and who were OSAS treatment naïve were recruited. Spirometry was performed in all patients in sitting and supine positions to assess forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), FEV1/FVC, forced expiratory flow (FEF) 50%, FEF 25–75%, maximum forced inspiratory flow and expiratory reserve volume. The mean difference in spirometry parameters between patients in sitting and supine positions was calculated. Results: A total of 27 OSAS patients (19 males and 8 females) were included in this study. There was a significant difference in FEV1/FVC in obese and non-obese patients when changing position (P = 0.03). In addition, there was a significant change between male and female patients’ FVC percentages (P <0.05). Male patients with OSAS had reduced FVC compared to females. There was no significant difference in the remaining spirometry parameters with patients’ change of position. Conclusion: A supine position may cause lower airway obstruction in obese patients with OSAS. The reduced FVC in males possibly contributes to the high prevalence of OSAS in men compared to women.
Authors and Affiliations
Redha Al Lawati, Mohammed A. Al Abri, Balaji Kuppuswamy, Amira Al-Kharousi, Al Yaqdhan Al-Atbi, Syed Rizvi, Mohan Dikshit
Keywords
Related Articles
- EP ID EP675780
- DOI http://dx.doi.org/10.18295/squmj.2019.19.04.006
- Views 265
- Downloads 0
Interprofessional Education (IPE) Activity amongst Health Sciences Students at Sultan Qaboos University The time is now!
Historically, health professionals have been educated in profession-specifc institutions which provide limited opportunities for learning interprofessional (IP) skills. Many qualifed practitioners are therefore poorly...
rimary School Managers’ Knowledge of and Attitude towards Epilepsy among Children in Erbil City, Iraq
Objectives: Tis study aimed to determine the knowledge and attitudes of primary school managers regarding epilepsy among school children in Erbil City, Iraq. Methods: A cross-sectional study was conducted in primary sc...
Validity and Reliability of the Clinical Competency Evaluation Instrument for Use among Physiotherapy Students Pilot study
Objectives: Te aim of this study was to determine the content validity, internal consistency, testretest reliability and inter-rater reliability of the Clinical Competency Evaluation Instrument (CCEVI) in assessing the...
Re: Sodium Valproate-Induced Myopathy in a Child
Belching as a Presenting Symptom of Angina Pectoris
Symptoms of angina pectoris can present with the typical specific symptoms, which are easy to recognize, or vague symptoms like chills, nausea, dizziness, belching and mild chest pain. Both the typical and atypical form...