Why does transnasal high flow oxygen therapy (HFNC) have a sense of superiority in the oxygen therapy session?
01
Patient comfort, especially when the respiratory function is unstable, is particularly important for reducing breathing work and avoiding respiratory function. It provides the following functions: (1) Provides a stable high oxygen concentration, and quickly and effectively improves blood oxygen. (2) Flush the dead space of physiological anatomy, reduce carbon dioxide and inhale again. (3) Form a certain positive airway pressure to keep the airway open. (4) Adequate humidification and warming make the airway mucus cilia cleansing function in the best state. (5) Comfortable patient experience and improve compliance with oxygen therapy.
02
High-flow heating, humidification and oxygen supply. HFNC can give warming and humidifying high-concentration oxygen through the nasal catheter, and the air flow can be as high as 60L/min. Since the air flow can be set to exceed the peak inspiratory flow level of most patients with respiratory failure, the oxygen concentration is guaranteed to be constant; The heating and humidifying functions of HFNC can protect the airway mucosa and enhance the cleaning ability of mucociliary. Reasonable airway humidification can dilute the secretions of the airway, keep the airway unobstructed and moist, maintain the normal function of the airway, and effectively prevent complications such as lung infection.
03
Increase functional residual capacity. Using electrical impedance tomography to evaluate the relationship between high-concentration nasal catheter oxygen inhalation, body position and end-expiratory volume. It is pointed out that no matter what posture is adopted, inhaling high-flow airflow through the nasal catheter can increase the overall regionality by increasing the functional residual volume. Lung impedance at the end of expiration.
04
Closely observe the patient's urine output. Potassium is mainly ingested from food and excreted in urine through the kidneys. Patients with chronic renal insufficiency have less urine output than normal people, and it is easier for potassium to accumulate in the body. Therefore, it is particularly important to closely observe the patient's urine output. Accurately record 24h urine output. For those with urinary incontinence, a catheter can be indwelled to accurately observe urine output without agitation.
