There is no sp on the ECG, but there are S wave and P wave on the ECG respectively, in which the S wave is also called QRS wave; there is sp on the ECG monitor, but sp should be written as SpO2, which refers to blood oxygen saturation.
1. There are atrial depolarizing wave P wave and ventricular depolarizing wave QRS wave on ECG, without SP, but there is ST segment representing ventricular repolarization. The normal ECG of leads I and II and leads V5 and V6 generally have P wave upward, QRS wave main wave upward, S wave downward, and the ST segments are mostly equipotential lines.
2. SpO2 on the cardiac monitor refers to blood oxygen saturation, normal human percutaneous arterial SpO2 value between 95~98%, venous oxygen saturation is about 75%, when the arterial SpO2 value is lower than 90% is hypoxemia, when the SpO2 value is greater than 80% is mild hypoxemia, when the SpO2 value is less than 80%, greater than 60% is moderate hypoxemia, when the SpO2 value is less than 60%, the SpO2 value is less than 60%, the SpO2 value is less than 80%, the SpO2 value is less than 60%, the SpO2 value is less than 60%, the SpO2 value is less than 60%, the SpO2 value is less than 60%. SpO2 is less than 60% is severe hypoxemia.
If you need to know the meaning of SP, it is recommended to consult a doctor.