The Hypoxic Drive Theory…DEBUNKED!

breathing hypoxic drive

We’ve all heard it at some point or another: “Don’t give that COPD patient too much oxygen”. It has led us to believe that oxygen is a REALLY bad thing in patients with chronic obstructive pulmonary disease (COPD). This has caused nurses to be afraid to put oxygen on a COPD patient with low oxygen saturations (SpO2); yes, even in patients with SEVERE hypoxia! Why? Because of a little something known as the hypoxic drive… Continue reading

Diagnose ANY Arterial Blood Gas in 5 Easy Steps: Get it Right, Every Single Time!

It is important to understand that the pH in our bodies likes to stay within the very narrow range of 7.35 – 7.45. In the physiologically functioning body, this is achieved by the respiratory system maintaining a carbon dioxide (CO2) level between 35 – 45 mmHg and the metabolic system maintaining a bicarbonate level between 22 – 26 mEq/L.

When a pathophysiological process causes the CO2 or bicarbonate levels in our body to move outside of their normal ranges, the pH is affected and also moves outside of it’s normal range. Continue reading