Accepted for/Published in: JMIR Rehabilitation and Assistive Technologies
Date Submitted: Oct 30, 2024
Date Accepted: Apr 1, 2025
Comparative study on beneficial effects of the novel digital incentive spirometer device and incentive spirometer in patients undergoing open heart surgery: A randomized control trial
ABSTRACT
Background:
The number of patients undergoing open-heart surgery (OHS) is persistently increasing. Additionally, postoperative pulmonary complications have been reported after OHS, and an incentive spirometer (IS) has been suggested to prevent postoperative pulmonary complications. However, no commercial IS provides the precise inhalation volume. We developed a digital IS (DIS) that displays the relevant data.
Objective:
Therefore, in this study, we aimed to explore the beneficial effects of DIS on respiratory function in patients who underwent OHS.
Methods:
Thirty-two patients scheduled for OHS were recruited: 16 individuals assigned to the DIS and flow-oriented IS (ie., triflow IS) groups (n=16/group), respectively. The patients were requested to perform the DIS and Triflow IS 15 times/set, two sets/day, from day 1 to 5 post-extubation. All participants underwent lung function and respiratory muscle strength assessments prior to OHS and on day 5 post-extubation postoperatively. For comparison between and within the groups, we performed an intention-to-treat analysis with a two-way mixed analysis of variance.
Results:
In both the DIS and Triflow IS groups, pulmonary function parameters, and maximal respiratory pressure were markedly reduced on day 5 post-extubation when compared with those prior to OHS (p<.05). There were no significant differences in pulmonary function or respiratory muscle strength between the two groups (p >.05).
Conclusions:
Therefore, pulmonary function and respiratory muscle strength did not differ significantly between the DIS and Triflow IS groups among patients who underwent OHS. Clinical Trial: TCTR20230922001
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