Screening of Patients with Snoring and Obstructive Sleep Apnoea using Heart Rate Variability Indices
Journal Title: Sultan Qaboos University Medical Journal - Year 2008, Vol 8, Issue 1
Abstract
Objective: Snoring and obstructive sleep apnea (OSA) are common disorders. Snoring associated with excessive daytime sleepiness is the most prevalent symptoms of OSA. Heart rate variability (HRV) is altered in patients with OSA and the degree of alteration may be linked to the severity of OSA. Alterations in HRV in 24 hour tachograms have recently been used in screening OSA patients. Autonomic components causing HRV can be reliably studied using spectral analysis techniques involving fast Fourier transformation (FFT). Methods: Twenty-three subjects, 13 with severe OSA and 10 controls matched for age and body mass index, were selected from patients who had undergone polysomnography (PSG) for snoring at Sultan Qaboos University Hospital, Oman. A 24- hour electrocardiogram (ECG) Holter recording was done at home, starting at 10am. Spectral analysis of ECG from sleep Holter and PSG recordings was analysed using fast Fourier transformation (FFT). Results: The ECG RR intervals of snorers with OSA were significantly shorter than in snorers without OSA (p<0.01). The low frequency (LF) spectral densities of HRV from polysomnography and Holter were significantly higher in OSA patients than in snorers, (p< 0.0001). The power spectral density of the high frequency bands was similar in the two groups. The overnight ECG Holter accurately identified all 13 snorers with severe OSA. Conclusion: The spectral power of the LF band obtained using FFT of sleep HRV from Holter tachograms may be a useful and cost effective test in identifying snorers with severe OSA.
Authors and Affiliations
Omar Al Rawas| Departments of Medicine, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Sultanate of Oman, Bazdawi Al-Riyami| Departments of Medicine, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Sultanate of Oman, Christopher Goddard| Departments of Medical Physics Unit, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Sultanate of Oman, Mohammed O Hassan| Departments of Physiology, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, Sultanate of Oman
Epidemiology of Diabetes Mellitus in Oman Results from two decades of research
Objectives: Tis study aimed to describe the epidemiology of diabetes mellitus over the past two decades in Oman, particularly in terms of its prevalence and incidence. In addition, the study sought to estimate the futu...
Persistent Pneumothorax: Alveolar pleural fistula due to a hole in a bulla
A22-year-old male patient, previously treated for pulmonary tuberculosis, presented to Sultan Qaboos University Hospital, Muscat, Oman in 2017 with sudden onset shortness of breath. Chest X-ray showed a pneumothorax on...
Diabetes Mellitus-Related Knowledge among University Students in Ajman, United Arab Emirates
Objectives: Te aim of this study was to assess diabetes mellitus (DM)-related knowledge and practices among university students enrolled in non-health care related professional courses in the United Arab Emirates. Meth...
Medical Education is on the Move once more
Re: Plagiarism and Other Types of Publication Misconduct