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Correlation between change in respiratory muscle strength and cough ability in patients submitted to open-heart surgery [Eastern J Med]
Eastern J Med. 2019; 24(4): 401-404 | DOI: 10.5505/ejm.2019.02486  

Correlation between change in respiratory muscle strength and cough ability in patients submitted to open-heart surgery

Karan Pongpanit1, chitima kulchanarat2, Sasipa Buranapuntalug1, Kornanong Yuenyongchaiwat1
1Department of Physical Therapy, Faculty of Allied Health Sciences, Thammasat University, Pathum Thani, Thailand
2Physical Therapy Center, Thammasat University Hospital, Pathum Thani, Thailand

INTRODUCTION: The purpose of this study was to determine the correlation between change in respiratory muscle strength and change in cough ability in patients submitted to open-heart surgery.
METHODS: An observational cross-sectional study was conducted among 52 participants. Respiratory muscle strength was assessed by maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) using a respiratory pressure meter. Cough ability was evaluated by voluntary expiratory peak flow (PEF) using a digital spirometer. Evaluations were performed on the day of admission and discharge.
RESULTS: Post-operative MIP, MEP, and PEF were significantly lower than those evaluated preoperatively (all p < 0.001). The difference of MIP and MEP was substantial positively correlated with the change in PEF in both absolute and predicted values (all p < 0.001) with the changes in MIP was highly relation.
DISCUSSION AND CONCLUSION: This study demonstrated that weakness of respiratory muscles, especially inspiratory muscle, was correlated to declining in cough ability in patients who had undergone open-heart surgery.

Keywords: Respiratory muscle strength, Cough ability, Open-heart surgery


Karan Pongpanit, chitima kulchanarat, Sasipa Buranapuntalug, Kornanong Yuenyongchaiwat. Correlation between change in respiratory muscle strength and cough ability in patients submitted to open-heart surgery. Eastern J Med. 2019; 24(4): 401-404

Corresponding Author: Karan Pongpanit, Thailand


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