Procedure goal
Conducting computed pulse oximetry during sleep is indicated to patients with diseases in which the prevalence of respiratory disorders during sleep can reach 30-50%.
Indications
- Obesity grade 2 or more (body mass index > 35);
- Stage 2 arterial hypertension and higher (especially night and morning hypertension);
- Severe COPD (Chronic Obstructive Pulmonary Disease) (FEV1 (Forced Expiratory Volume) 2 times per night);
- Difficult respiration, shortness of breath, or attacks of choking at night;
- Frequent awakenings, poor energy recovery after sleep;
- Severe daytime sleepiness;
- Depression, apathy, irritability, decreased mood background;
- Gastroesophageal reflux (belching) at night.
Computer pulse oximetry can be used to dynamically monitor the effectiveness of respiratory support methods:
- Long-term oxygen therapy using oxygen concentrators;
- Non-invasive assisted ventilation of the lungs with constant positive pressure (CPAP-therapy) and two-level positive pressure (BiLevel-therapy).
The doctor reads the results recorded by the device. The readings are given as a percentage, and the norm in adults is blood saturation with hemoglobin up to 98%.
Indicators below 90% may speak of insufficient saturation and even signs of hypoxia. The critical indicator is 80%; if the device shows this value, this may mean incorrect reading of data or apnea. Averages of 95% are considered normal.
The norm will be different for children of different age. The normal indicators reach 100%, meaning deep breathing during a night's sleep. The norm is assessed according to age: the younger the child, the higher the pulse rate and oxygen saturation.
