What is a nasal thermistor?

One thermistor channel (oral and/or nasal) is used to evaluate the presence or absence of airflow. Any change in temperature as a patient inhales and exhales leads to a normal signal, so this channel is insensitive for partial flow obstruction. It is also used for airflow resistance in upper airway resistance syndrome.

What does a thermistor measure in a sleep study?

Recording of respiratory airflow is an integral part of polysomnography (NPSG). It is conventionally monitored with a thermistor that measures temperature as a surrogate of flow.

What is obstructive sleep apnea?

Obstructive sleep apnea occurs when the muscles in the back of your throat relax too much to allow normal breathing. These muscles support structures including the back of the roof of your mouth (soft palate), the triangular piece of tissue hanging from the soft palate (uvula), the tonsils and the tongue.

What is an Oronasal thermal sensor?

An oronasal thermal device (thermistor or thermocouple) placed between the nose and mouth is commonly used to monitor airflow by detecting changes in temperature (cool air flows during inspiration and warm air flows during expiration).

What foods help with sleep apnea?

Foods That Help

Foods Rich in Melatonin. Many fruits and vegetables contain melatonin, which is a natural sleep enhancer.
Omega-3 Foods. Omega-3 fatty acids can help your body produce melatonin (the sleepy hormone described above).
Tryptophan-Infused Foods.
Fatty Meats.
Bananas.
High-Fat Dairy Items.

What causes a thermistor to fail?

The most common failure mode of a thermistor is an open circuit, as shown in Table 1. The cause of such failures are usually due to mechanical separation between the resistor element and the lead material, caused by handling damage, excessive heat, thermal mismatch, etc.

Is a temperature sensitive resistor?

A thermistor is a temperature sensitive resistor. They are often used as a temperature sensor. Unlike most other resistors, thermistors usually have negative temperature coefficients (NTC) which means the resistance decreases as the temperature increases. These types are called NTC thermistors.