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With the spread of the COVID-19 pandemic, the situation of disease control facing many difficulties with new strains of strains causing great damage to the economy and human society, now there are many people living by themselves. equipped with oxygen concentrator for home use. However, according to the Ministry of Health, arbitrarily buying oxygen ventilators is unnecessary and wasteful because it cannot be used without sufficient expertise. So when we use an oxygen ventilator at home, what should we pay attention to?
1. Respiratory parameters to know about oxygen ventilators SpO2 index is capillary blood oxygen concentration measured at fingertips, toes, ear lobes,... In some conditions such as respiratory failure, If circulatory failure occurs, the body will start the centralizing mechanism of circulation, causing blood to focus on feeding important organs in the body and at this time the SpO2 measurement sites are no longer fully nourished by blood, causing the SpO2 index to drop. low (less than 95%) accompanied by the following signs:
Cyanosis of lips and extremities Contraction of accessory respiratory muscles Dizziness Rapid pulse over 100 times/minute Shortness of breath, breathing rate over 24 times/minute 2. How to use safe and effective oxygen ventilator 2.1. How to prepare Need to tidy up the place where the oxygen tank is kept to avoid collisions during use, place the bottle away from heat and electricity sources at least 5 meters.
Check all components before use:
Green oxygen tank Oxygen breathing set includes meter and oxygen column, humidifier, flow control valve, pressure gauge, flow meter, set humidifier Cannula or breathing mask
Sử dụng máy thở oxy tại nhà cần có sự thực hiện hoặc hướng dẫn chi tiết từ các nhân viên y tế
2.2. Steps to use an oxygen ventilator Connect the meter to the oxygen tank, turn the thread, tighten it. Pour water into the humidifier, maintain the water level at the halfway mark, the type of water can be pure or drinking water, water not lower than that. line on the bottle Hold the humidifier and install the oxygen cord Rotate counterclockwise to open the oxygen tank valve Correct needle position in the green area is oxygen Adjust the amount of breathing oxygen/minute Wear the oxygen strap to the patient with cannula or mask, breathe evenly. Note with cannula starting at 2 liters/min, up to 6 liters/minute and the mask starting at 5 liters/minute, up to 10 liters/minute If maintained at the lowest dose, the patient is not short of breath, not breathing at If the dose is too high or the dose is increased too quickly, adjust every 15 minutes
2.3. Fire safety and precautions Close all valves and knobs when not in use, secure the tank securely, transport it gently Have emergency firefighting equipment ready When assembling an oxygen tank , limbs, clothes must not be stained with grease, alcohol-containing solutions such as hand sanitizer Do not repair yourself when you hear a hissing sound due to an open valve Do not fill in foreign air, do not self-extract gas Be careful not to damage the thread of the oxygen wire easy to leak gas
3. Mistakes encountered when using oxygen respirator at home Some mistakes that people often make when using oxygen ventilators at home, for example:
Specifying oxygen therapy too widely, not necessary even if blood oxygen is normal Inappropriate use of high doses of oxygen: oxygen does not treat dyspnea but only improves hypoxemia, therefore oxygen must be accompanied by treatment of the cause Hyperoxia Excessive exposure is as dangerous as hypoxemia, because it can cause respiratory depression, hypoventilation, oxygen dependence, and aspiration-induced atelectasis. Under no circumstances should the patient be given oxygen higher than 5 liters/min without consulting the physician. For healthy patients, maintaining oxygen just enough to make SpO2 above 94% is achieved, while patients with heart failure SpO2 only need to maintain within 90% with an oxygen dose of 3-5 liters/minute.
Above are the notes when using an oxygen ventilator at home, using an oxygen ventilator yourself at home can generate a lot of risks. Therefore, do not arbitrarily use at home, but need to be performed or detailed instructions from medical staff.
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