by RTgoods | Aug 5, 2017 | Heart and Lungs
Oxygen Extraction Ratio (O2ER) is the amount of oxygen extracted by the peripheral tissues (CaO2-CvO2) divided by the amount of oxygen delivered (CaO2) to the peripheral tissues. Normal O2ER is around 0.25 or 25% O2ER: Oxygen Extraction Ratio CaO2: Arterial oxygen...
by RTgoods | Jun 11, 2017 | Heart and Lungs
Pulmonary Vascular Resistance (PVR) is the resistance to flow that must be overcome to push blood through the pulmonary vascular. Acute and chronic lung disease can both cause an increase in PVR. Chronic PVR can lead to right sided heart failure. How to Calculate...
by RTgoods | Jun 9, 2017 | Heart and Lungs
What is Systemic Vascular Resistance? Systemic Vascular Resistance (SVR) is the resistance offered by the systemic circulation. A decrease in SVR will result in an increased blood flow to tissues and an increased venous flow back to the heart. An increased SVR will...
