Trial reportGeneral thoracic and cardiovascular surgery2026
Effects of physiotherapy on breathing cycle after thoracic surgery measured with impedance pneumography in a prospective clinical comparison.
Trial report in General thoracic and cardiovascular surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02931617 (Comparison of Two Modes of Respiratory Physiotherapy in Cardio-thoracic Surgical Patients), which is not on this map. Cited by 3 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.
Comparison of Two Modes of Respiratory Physiotherapy in Cardio-thoracic Surgical Patients
Who cites it
3 citing papers in PubMed.
- Quantification of Immediate Surgical Stress After Major and Minor Thoracic Surgeries Through HRV: A Secondary Post Hoc Analysis of a Randomized Controlled Trial.Pulmonary medicine · 2026Trial
- Review
- Comment on "Effects of physiotherapy on breathing cycle after thoracic surgery measured with impedance pneumography in a prospective clinical comparison".General thoracic and cardiovascular surgery · 2026Article
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Authors and funding
5 authors.
Funding
Abstract
objectivesImpedance pneumography (IP) records respiratory cycle and provides non-invasive means to evaluate changes after thoracic surgery. This comparative study evaluated if changes after thoracic surgery can be modified by two pulmonary rehabilitation modalities.
methods88 patients undergoing thoracic surgery were randomly allocated to either positive expiratory pressure (PEP) or inspiratory muscle training (IMT) physiotherapy group. Physiotherapy was performed and IP recorded preoperatively and at first and second postoperative days (POD1 and POD2) during tidal breathing. Full three timepoint IP data were collected from 81 patients (42 in the PEP group, 39 in the IMT group). Average inspiration and expiration time in seconds (TinspAvg and TexpAvg) and average breathing frequencies (BrthFreqAvg) were calculated from a 10-min measurement period and assessed as primary outcomes. Results were also assessed in blocks of different surgical techniques (thoracotomy or VATS) and the extent of surgery (pulmonary resection or minor thoracic operation).
resultsTinspAvg and TexpAvg decreased after surgery but started to increase in the IMT group between POD1 and POD2 with no significant difference compared to PEP group. Among patients operated with thoracotomy TexpAvg was slightly but insignificantly higher in the IMT group at POD2. The ratio between the time of expiration and the time of inspiration (EI ratio) was significantly higher in the IMT group with thoracotomy (difference between groups over three timepoints, (p = 0.044) and at POD1 (p = 0.015)).
conclusionsIMT seemed to enhance expiration specifically among thoracotomy patients and thus may provide means for enhancing the recovery after thoracic operations. CLINICAL
trial registrationNCT02931617/U.S. National Library of Medicine, ClinicalTrials.gov.
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