Table 3 Side effects of manual hyperinflation (MH)
Author [ref] | Year | Subjects | N | Study design | Intervention | Reported aspects of the MH maneuver | Main results |
|---|---|---|---|---|---|---|---|
Singer et al. [8] | 1994 | Unselected intensive care unit patients | 18 | Prospective observational study | Measurements of hemodynamic parameters before and after MH | Volume: + Inspiration speed:- Pause: - Expiration speed: - | MH decreased cardiac output; MH did not affect heart rate or systemic blood pressure |
Jellema et al. [32] | 2000 | Patients with septic shock | 13 | Prospective observational study | Measurements of hemodynamic parameters before and after MH | Volume: ± Inspiration speed: - Pause: + Expiration speed: + | MH did not affect cardiac output, heart rate, systemic blood pressure, or central venous pressure |
Paratz et al. [33] | 2002 | Patients with ALI | 16 | Prospective observational study | Measurements of hemodynamic and respiratory parameters before and after MH | Volume: + Inspiration speed: + Pause: + Expiration speed: + | MH did not affect cardiac output, heart rate, systemic blood pressure, or central venous pressure |
Paratz et al. [7] | 2006 | Patients in shock | 7 | Prospective observational study | Measurements of hemodynamic parameters and plasma catecholamines before and after MH | Volume: + Inspiration speed: + Pause: + Expiration speed: + | MH decreased cardiac output, and increased systemic vascular resistance, and diastolic blood pressure |
Hodgson et al. [26] | 2000 | Unselected intensive care unit patients | 18 | Randomized crossover trial | MH + endotracheal suction vs. standard care | Volume: - Inspiration speed: - Pause: + Expiration speed: ± | MH did not affect heart rate or systemic blood pressure |
Barker et al. [20] | 2002 | Patients with ALI | 18 | Randomized controlled trial | MH + endotracheal suction vs. position changes of patient | Volume: + Inspiration speed: - Pause : + Expiration speed: - | MH increased heart rate and systemic blood pressure; MH did not affect pulmonary artery wedge pressure |
Paulus et al. [34] | 2010 | Unselected intensive care unit patients | 74 | Prospective observational study | Measurements of hemodynamic parameters before and after MH | Volume: + Inspiration speed: + Pause: + Expiration speed: + | MH did not affect systemic blood pressure or peripheral oxygen saturation; MH increased heart rate and end-tidal CO2 levels |
Patman et al. [35] | 1998 | Postcardiac surgery patients | 30 | Prospective observational study | Measurements of hemodynamic parameters before and after MH | Volume: - Inspiration speed: - Pause: ± Expiration speed: - | MH increased central venous pressures and decreased heart rate; MH did not affect cardiac output |