on process of making a ventilator....i want to know if pressurised air is given to the humidifier and also do the air flowing through the humidifier stay in the humidifier for some time to get heated aand humidified
The proper direction of air flow should be from the ventilator, through a heated humidifier, to the patient. The air does not need to be in the humidifier chamber for any set amount of time. Simply passing through the chamber should be sufficient as long as the humidifier is strong enough to deliver air to the patient at 37 degrees Celsius. Using a tubing circuit that has a heater wire inside the inspiratory limb will help maintain the temperature and humidity as the air travels from the humidifier to the patient. If a heater wire in the tubing is not available, expect large amounts of condensation in the tubing as the air cools as it travels from the humidifier to the patient. More condensation will be produced with longer tubing than shorter tubing. Even with a heated wire circuit, expect some amounts of water condensation. It is very important to ensure condensation is always draining away from the patient connection. Even a small amount of water flowing into the patient may have very negative clinical effects on the patient.
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on process of making a ventilator....i want to know if pressurised air is given to the humidifier and also do the air flowing through the humidifier stay in the humidifier for some time to get heated aand humidified
The proper direction of air flow should be from the ventilator, through a heated humidifier, to the patient. The air does not need to be in the humidifier chamber for any set amount of time. Simply passing through the chamber should be sufficient as long as the humidifier is strong enough to deliver air to the patient at 37 degrees Celsius. Using a tubing circuit that has a heater wire inside the inspiratory limb will help maintain the temperature and humidity as the air travels from the humidifier to the patient. If a heater wire in the tubing is not available, expect large amounts of condensation in the tubing as the air cools as it travels from the humidifier to the patient. More condensation will be produced with longer tubing than shorter tubing. Even with a heated wire circuit, expect some amounts of water condensation. It is very important to ensure condensation is always draining away from the patient connection. Even a small amount of water flowing into the patient may have very negative clinical effects on the patient.
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