Impact of Positive End Maximum Voluntary Ventilation and Dyspnea Index in Patients After Valvular Heart Surgery

Comparison Between the Manual Respiratory Exercises and Respiratory Pressure Meter

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT05267067

Enrollment

Registered

2022-03-04

Start date

2020-09-02

Completion date

2021-02-01

Last updated

2022-03-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Respiration Disorders

Brief summary

Pulmonary mechanics are further disturbed after cardiothoracic surgery that manifests like restrictive pathology, which may persist for weeks to months postoperatively. This experimental aimed to investigate the efficacy of a positive end-expiratory pressure device on maximum expiratory pressure, maximum voluntary ventilation, and dyspnea index in patients who underwent valve surgery.

Detailed description

Thirty male and female adolescent patients who underwent valve surgery aged 12-18 years old, recruited from the national heart institute enrolled in this experimental. They were assigned into two matched groups: Experimental group consisted of 15 patients, received positive end-expiratory pressure (PEEP) with a mouthpiece in addition to routine chest physiotherapy (postural drainage, percussion, vibration, and deep breathing exercises). Control group consisted of 15 patients, received routine chest physiotherapy alone. The program continued for four weeks.

Interventions

OTHERrespiratory exercises

Manual respiratory exercises versus respiratory exercises with pressure meter

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

12 Years to 18 Years

Healthy volunteers

Inclusion criteria

* Male patients * underwent valve surgery (repair or replacement) for mitral valve stenosis; * hemodynamically stable, * ages ranged from 12 to 18 years old- * BMI ranges from 18.5 to 24.9 * reduced MEP, MVV and complaining from shortness of breath with exertion.

Exclusion criteria

* Patients with previous cardiac surgery * congenital heart disease * neurological disorders * type1 diabetes mellitus * smoker * pacemaker implantation * atrial fibrillation * utilization of mechanical ventilation longer than 24 hours.

Design outcomes

Primary

Measure	Time frame	Description
Respiratory muscle strength	3 month	By respiratory pressure meter

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026