Correlation of Single Breath Count Test with Peak Expiratory Flow Rate in Adult Patients Post COVID-19 Infection

Marcherly Wardi (Department of Physical Medicine and Rehabilitation, Faculty of Medicine, University of Indonesia, Jakarta)
Siti Chandra Widjanantie (Department of Physical Medicine and Rehabilitation, Faculty of Medicine, University of Indonesia, Jakarta)
Heidy Agustin (Department of Pulmonology and Respiratory Medicine, Faculty of Medicine, University of Indonesia, Jakarta)
Cleopas Martin Rumende (Department of Internal Medicine, Faculty of Medicine, University of Indonesia, Jakarta)
Andari Perwira Putri (National Respiratory Referral Center Persahabatan Hospital, Jakarta)
Sri Wahyudati (Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Diponegoro University, Semarang)

Medica Hospitalia
Vol. 12 No. 2 (2025): Med Hosp

BACKGROUND: The utilization of spirometry has garnered significant attention recently due to its potential role in transmitting COVID-19. There is a critical need for a straightforward bedside assessment capable of accurately measuring respiratory function without relying on equipment and minimizing the risk of airborne transmission. AIMS: To know the correlation between Single Breath Count Test (SBCT) values and Peak Expiratory Flow Rate (PEFR) values in adult patients recovering from COVID-19. METHOD: This study presents a cross-sectional design with consecutive subject recruitment. The SBCT was administered using a metronome, while PEFR was measured using a Mini Wright Peak Flow Meter on a sample of 38 participants, comprising 18 men and 20 women. RESULT: Statistical analysis using Pearson’s parametric correlation test revealed a significant relationship between SBCT and PEFR (p < 0.05), with a moderate positive correlation observed (r = 0.516). CONCLUSION: This research demonstrates a significant, moderate positive correlation between SBCT and PEFR in adult post-COVID-19 patients, indicating that higher SBCT values correspond to higher PEFR measurements.