NCT04013360

Acute Effect of Positive Expiratory Pressure Versus Breath Stacking Technique After Cardiac Surgery

Acute Effect of Positive Expiratory Pressure Versus Breath Stacking Technique After Cardiac Surgery: a Randomized Crossover Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 24 (actual)
• Sponsor: Universidade Federal de Santa Maria · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Not accepted

Summary

This study evaluates the efficacy and safety of a single session of positive expiratory pressure and of breath stacking technique in patients after cardiac surgery. The same patients will receive the two interventions, with an interval of 24 hours, and the acute effect of each will be verifed.

Detailed description

Physiotherapy uses techniques and equipment that reduce postoperative pulmonary complications. The technique called breath stacking consists of an instrumental feature composed of a unidirectional valve coupled to a face mask to promote the accumulation of successive inspiratory volumes. The technique is used to prevent atelectasis and improve gas exchange. Another therapy is called expiratory positive airway pressure (EPAP) that uses positive end expiratory pressure (PEEP) in spontaneously breathing patients, keeping the airway open during expiration. The EPAP system consists of a face mask, a one-way valve and the expiratory resistor, which is responsible for resistance to expiratory flow, which will determine the level of PEEP.

Conditions

• Complication, Postoperative
• Cardiac Complication

Interventions

Type	Name	Description
OTHER	Breath Stacking	The patients will perform the maneuver through successive inspiratory efforts for 20 s. Subsequently, the expiratory branch will be unobstructed to allow expiration. This maneuver will be repeated 5 times in each series, with intervals of 30 seconds between them. The technique will be performed with the trunk inclined 30º in relation to the horizontal plane, in 3 series, with interval of 2 min completing 15 min of therapy.
OTHER	Expiratory Positive Airway Pressure	Patients will perform exhalation of air through a facial mask containing an extrinsic positive expiratory pressure valve with a defined load of 10 cmH2O for 5 min. During the application of the technique the patients will have a trunk inclined 30º and will be stimulated to breathe normally, without effort or deep and fast breaths.

Timeline

• Start date: 2019-08-01
• Primary completion: 2019-12-30
• Completion: 2020-02-04
• First posted: 2019-07-09
• Last updated: 2020-04-09

Locations

1 site across 1 country: Brazil