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Three types of oxygen inhalation, which is suitable for comatose patients?

Author:RKD Click: Time:2020-06-24 10:52:56

In some coma patients, severe hypoxemia is often caused by the fall of the tongue base and the secretions in the oral and nasal cavities, and then the respiratory rate is accelerated to develop respiratory acidosis, which seriously affects respiratory function and causes acute respiratory failure, which worsens the condition. The key to rescue at this time is to open the airway as soon as possible, remove respiratory secretions, give oxygen, quickly increase the blood oxygen content, and improve the symptoms of hypoxia. So, which of the three methods of inhalation through the oropharyngeal ventilator, traditional nasal inhalation, and mask inhalation is suitable for such patients? Studies have compared that the blood oxygen saturation of patients after inhaling oxygen by placing the oropharyngeal ventilator is faster and higher than that of the dual-chamber oxygen inhalation tube group and mask oxygen inhalation group. The effect of hypoxic symptoms is obvious.

Double chamber oxygen tube oxygen

The disposable double-cavity oxygen suction tube is simple and easy to use, and there is no dead cavity during use, the air is evenly distributed and it is not easy to block. No oxygen tape is used to fix oxygen, and it is not easy to loosen or fall off, which increases the patient's comfort, and the patient is easy to tolerate under continuous oxygen inhalation. However, the flow rate of nasal oxygen inhalation reaches 4L/min. The patient feels that there is a blowing-like feeling in the nasal cavity and it is easy to cause airway mucosa dryness and sputum crusting, so it is only suitable for patients who require low-flow oxygen.

Oxygen mask

The masking effect of oxygen absorption on the mouth and nose can effectively reduce the water lost through the mouth and nose, which is beneficial to the humidification of the respiratory tract, and is not easy to cause airway spasm, dry mucous membranes and the formation of sputum scabs, which can achieve satisfactory expectoration and discharge The phlegm effect guarantees the effect of oxygen inhalation. However, because the exhaled CO2 is discharged from the small pores on both sides of the mask during oxygen inhalation, part of the CO2 remains in the mask but will reduce the concentration of oxygen inhalation, making it difficult to correct hypoxia. In addition, when the mask inhales oxygen, the patient feels facial discomfort and suffocation. Therefore, mask oxygen inhalation is more suitable for oxygen therapy of hypoxemia patients caused by hyperventilation.

Oxygen insertion through oropharyngeal ventilator

The oropharyngeal ventilator is a rigid flat tube-shaped non-tracheal tube ventilator made of plastic or rubber. It is curved and has a good anatomical curvature. It can separate the base of the tongue from the posterior wall of the oropharynx. The tract is unobstructed, easy to operate and easy to master. It can open the airway in a few seconds without special equipment, improve the ventilation function, and keep the airway open. It is especially suitable for patients with spontaneous breathing but airway obstruction caused by falling tongue roots or sputum accumulation. In addition, inserting an oxygen suction tube from the middle of the oropharyngeal ventilator to inhale oxygen makes the effective concentration of inhaled oxygen more efficient in alveolar gas exchange and improves blood oxygen saturation faster.

Special tips for single-use oxygen suction tubes:

The oropharyngeal ventilator is irritating to the throat, which can easily cause nausea and vomiting in awake patients. Therefore, the oropharyngeal ventilator is suitable for comatose patients with spontaneous breathing without cough reflex.


Three types of oxygen inhalation, which is suitable for comatose patients?
In some coma patients, severe hypoxemia is often caused by the fall of the tongue base and the secretions in the oral and nasal cavities,
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