ArticleHeliyon2021
Contrasting effects of three breathing techniques on pulmonary function, functional capacity and daily life functional tasks in patients following valve replacement surgery- A pilot randomized clinical trial.
Article in Heliyon, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05585138 (Effects of Preoperative Segmental Breathing Exercise on Postoperative Pulmonary Complications in Patients Awaiting Coronary Artery Bypass Graft Surgery), which is not on this map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Effects of Preoperative Segmental Breathing Exercise on Postoperative Pulmonary Complications in Patients Awaiting Coronary Artery Bypass Graft Surgery (CABG)
Who cites it
6 citing papers in PubMed, 16 citations in OpenAlex.
- Effects of Adding Incentive Spirometry to Hospital-Based Cardiovascular Rehabilitation on Pulmonary Complications, Hospital Length of Stay, and Clinical-Functional Recovery After Cardiac Surgery: A Randomized Controlled Trial.Physiotherapy research international : the journal for researchers and clinicians in physical therapy · 2026Trial
- Trial
- Article
- Beneficial Effects of the Novel Digital Incentive Spirometer Device and Incentive Spirometer in Patients Undergoing Open-Heart Surgery: Randomized Controlled Trial.JMIR rehabilitation and assistive technologies · 2025Article
- Observational
- Volume Incentive Spirometry Reduces Pulmonary Complications in Patients After Open Abdominal Surgery: A Randomized Clinical Trial.International journal of general medicine · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 5 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundValve replacement surgeries affect the physiological mechanisms of patients leading to various postoperative pulmonary complications. Lung expansion therapy consisting of numerous techniques is routinely used for the prevention and treatment of these complications.
objectivesOur study aimed to compare the effects of diaphragmatic breathing (DB), flow (FS) and volume-oriented incentive spirometer (VS) in patients following valve replacement surgery.
methods29 patients posted valve replacement surgeries were randomly assigned to VS, FS and DB groups. Patients underwent preoperative training and seven-day rehabilitation post-surgery. Pulmonary function tests were performed before surgery and for seven days afterward. On the seventh postoperative day, patients performed a six-minute walk test and completed a functional difficulties questionnaire (FDQ).
resultsPulmonary function test values reduced in all three groups postoperatively when compared to the preoperative values but improved by the seventh postoperative day (p < 0.05). On comparing the seventh postoperative day values to the preoperative values, the VS group had no significant difference (p = 1.00) (Forced Vital Capacity- % change: DB-37.76, VS-1.59, FS-27.98), indicating that the value had nearly returned to the baseline. As compared to the DB and FS groups, FVC showed a greater improvement in the VS group (p = 0.01 and p = 0.06 respectively). No significant differences were observed between groups for distance walked (p > 0.05), however, FDQ scores demonstrated positive changes in favor of VS when contrasted with FS or DB (p < 0.05).
conclusionDiaphragmatic breathing, flow or volume-oriented spirometer could improve pulmonary function in the postoperative period. The volume-oriented spirometer, however, was found to be the most beneficial among the three techniques in improving patients' pulmonary function and daily life functional tasks. Further research is warranted to confirm these findings.
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