# Comparative study on the effect of different high-frequency chest wall oscillation and back patting modes on sputum excretion in patients with severe pneumonia

## TL;DR

This study compares different chest wall oscillation and back patting methods to see which are most effective at helping severe pneumonia patients clear mucus from their lungs.

## Contribution

The study identifies optimal back-patting parameters for sputum clearance in severe pneumonia patients, offering insights for clinical care and robot development.

## Key findings

- Different back-patting methods significantly affect sputum volume, viscosity, and blood oxygen saturation.
- High-frequency chest wall oscillation improves sputum expectoration and lung function in severe pneumonia patients.
- Optimal back-patting patterns can reduce hospital stays by enhancing mucus clearance.

## Abstract

The effect of different backslapping parameters on sputum discharge in SP patients is unclear.

To investigate the effects of different back-patting modes on sputum clearance from the lungs of SP patients. To provide a theoretical basis for future clinical care and development of critical care robots.

The patients with severe pneumonia in ICU of Guangyuan tertiary hospital were selected as the study object, and according to the specific conditions of the patients, different back-patting methods were selected and given different back-patting intensity, back-patting frequency, back-patting times, back-patting times, back-patting times, and back-patting times, respectively, to compare and analyse the effects of the different back-patting methods on the patient’s expectoration effect, blood oxygen concentration, and lung signs.

Finally, 143 patients with severe pneumonia were included. The volume of sputum expectoration, sputum viscosity, and blood oxygen saturation were significantly higher with different back patting patterns (p < 0.05), and the effective rate of treatment of pulmonary signs was significantly higher (p < 0.05).

Specific high-frequency chest wall shock back-patterning can effectively improve sputum expectoration in SP patients, helping to restore lung function and reduce hospital stay.