Adenosine triphosphate (ATP) is the biochemical way to store and use energy. F or your muscles -- in fact, for every cell in your body -- the source of energy that keeps everything going is called ATP.
An approximate blood oxygen level can also be estimated using a pulse oximeter â a small device that clips on your finger. Though the pulse oximeter actually measures the saturation of oxygen in your blood, the results are often used as an estimate of blood oxygen levels.Normal pulse oximeter readings range from 95 to 100 percent, under most circumstances. Values under 90 percent are considered low.1  Causes.n approximate blood oxygen level can also be estimated using a pulse oximeter â a small device that clips on your finger. Though the pulse oximeter actually measures the saturation of oxygen in your blood, the results are often used as an estimate of blood oxygen levels.
How does an oximeter work? A pulse oximeter is composed of the sensor (or probe) and the monitor with the display.The probe is on the finger and is detecting the flow of blood through the finger. This is displayed as a pulse wave on the monitor.A pulse wave must be present to demonstrate that a pulse is being detected.In this figure, the patient has a pulse rate of 72 beats / minute and an SpO 2 of 98%. This monitor describes the pulse rate as the heart rate.his is displayed as a pulse wave on the monitor. A pulse wave must be present to demonstrate that a pulse is being detected.In this figure, the patient has a pulse rate of 72 beats / minute and an SpO 2 of 98%. This monitor describes the pulse rate as the heart rate.