Airway clearance system - vest type sputum dispenser introduction

I. Overview

The vest type sputum extractor is a kind of equipment which uses the whole chest oscillation technology to stimulate the cilia movement on the respiratory wall through high frequency vibration and effectively remove sputum in the respiratory tract. It can improve the efficiency of sputum discharge, improve lung ventilation function, and bring patients a fresher breathing experience.

2. Applicable patient population and symptoms

Applicable patient population

Patients in ICU, respiratory department, pediatrics, geriatric department, etc.

Patients with chronic obstructive pulmonary disease, atelectasis, bronchiectasis, chronic bronchitis and other respiratory diseases.

Elderly, infirm, long-term bedridden, coma, myasthenia gravis and other patients.

Pediatric pneumonia, occupational lung disease and other special patient groups.

Applicable symptom

Excessive phlegm in the airway, thick, weak cough.

Patients who require mechanical ventilation to establish an artificial airway.

Sputum obstruction leads to dyspnea, poor lung ventilation and other symptoms.

Third, the mechanism of action

Promote the elimination of secretions and sputum: The vibration and percussion effect of the tank type sputum ejector extensively acts on small and medium-sized airways, promotes the secretion of serous cells, dilutes sputum, reduces the viscosity of secretions, and facilitates the movement of sputum. Vibration can also relax and break exfoliated secretions, strengthen ciliary oscillations, accelerate the movement of secretions to the atmospheric tract, thereby eliminating sputum and improving lung ventilation.

Ease bronchial smooth muscle spasm: Low frequency vibration is well in line with the natural frequency of the human body, can make bronchial smooth muscle relaxation, further improve lung ventilation.

Eliminate edema, reduce obstruction: percussion can promote local blood circulation, accelerate lymphatic reflux, thereby eliminating edema, reduce obstruction, reduce secretions, and reduce pulmonary ventilation resistance.

Improve blood oxygen concentration: The smooth elimination of sputum and secretion increases oxygen supply, the smooth discharge of carbon dioxide, and the blood oxygen concentration is improved. In addition, it can also promote blood circulation, eliminate edema, increase gas exchange, and thus increase blood oxygen concentration.

4. Relevant cases

Case 1: The Second Affiliated Hospital of Dalian Medical University conducted a study on 121 hospitalized patients diagnosed with chronic obstructive pulmonary disease, pneumonia, bronchial asthma, and bronchiectasis. The patients were randomly divided into expectoration group, artificial back buckle group and control group. The results showed that after treatment, the cough and expectoration score of the expectoration group was lower than that of the control group and the artificial back tap group, the time of expectoration improvement and hospitalization days were significantly shortened, and the SGRQ score was also decreased. This proves the effectiveness of the vest type sputum dispenser in clinical application.

Case 2: Wannan Rehabilitation Hospital/Wuhu Fifth People's Hospital conducted a randomized controlled study of 90 long-term bedridden patients admitted to the hospital from January 2018 to December 2018. The control group was treated with routine expectoration care and nursing intervention, while the study group was treated with vest expectoration machine and supporting nursing intervention. The results showed that the vest expectorator could effectively improve the cardiopulmonary function, reduce the amount of expectoration, reduce the rate of pulmonary infection, and shorten the length of hospital stay.

5. Precautions

Although the vest type sputum dispenser has a certain effect, it needs to be used under the guidance of a doctor.

Consult a doctor before use, avoid blind use of private, so as to avoid improper force to bring damage to the body.

Keep the equipment clean and do not touch any parts with sharp objects.

The use environment should be kept ventilated to avoid adverse effects of waste gas accumulation.

In summary, as an airway clearance system, the vest expectorator has remarkable effect and wide applicability in clinical application. It can provide patients with an effective sputum clearing program, improve lung ventilation function and improve quality of life.