What does CVR mean in HEALTHCARE
CVR is the measure of resistance to blood flow within the cerebral circulation. It is an important factor in maintaining cerebral blood flow (CBF) and cerebral perfusion pressure (CPP).
CVR meaning in Healthcare in Medical
CVR mostly used in an acronym Healthcare in Category Medical that means Cerebrovascular resistance
Shorthand: CVR,
Full Form: Cerebrovascular resistance
For more information of "Cerebrovascular resistance", see the section below.
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- Cerebrovascular resistance (CVR) is a measure of the resistance to blood flow in the cerebral circulation.
- It is an important determinant of cerebral blood flow (CBF) and cerebral perfusion pressure (CPP).
CVR
- CVR is measured in mmHg/mL/min.
- It is calculated as the difference between mean arterial pressure (MAP) and cerebral perfusion pressure (CPP) divided by cerebral blood flow (CBF).
- CVR = (MAP - CPP) / CBF
Factors Affecting CVR
- Arteriolar tone: The diameter of arterioles plays a major role in determining CVR. Vasodilation decreases CVR, while vasoconstriction increases CVR.
- Blood viscosity: Increased blood viscosity can increase CVR.
- Atherosclerosis: Plaque buildup in the cerebral arteries can narrow the vessels and increase CVR.
- Inflammation: Inflammatory mediators can cause vasoconstriction and increase CVR.
Clinical Significance of CVR
- Elevated CVR can lead to decreased CBF and CPP, which can result in cerebral ischemia.
- Conditions that can increase CVR include hypertension, diabetes, and smoking.
- Treatment of elevated CVR typically involves vasodilators and anti-inflammatory medications.
Essential Questions and Answers on Cerebrovascular resistance in "MEDICAL»HEALTHCARE"
What is Cerebrovascular Resistance (CVR)?
How is CVR calculated?
CVR is calculated by dividing the mean arterial pressure (MAP) by the CBF. MAP is the average pressure in the arteries over a cardiac cycle, while CBF is the volume of blood flow through the brain per unit time.
What are the factors that affect CVR?
Factors that affect CVR include:
- Blood viscosity: Thicker blood increases CVR, while thinner blood decreases CVR.
- Lumen diameter of cerebral arteries: Narrowed arteries increase CVR, while dilated arteries decrease CVR.
- Vasomotor tone: Vasoconstriction increases CVR, while vasodilation decreases CVR.
What is the clinical significance of CVR?
CVR is a useful parameter for assessing cerebral circulation and diagnosing cerebrovascular disorders. Increased CVR may indicate conditions such as stroke, vasospasm, or increased intracranial pressure, while decreased CVR may indicate impaired autoregulation or cerebral hyperemia.
How can CVR be modified?
CVR can be modified through various interventions, including:
- Pharmacologic agents: Vasodilators decrease CVR and vasoconstrictors increase CVR.
- Physical maneuvers: Lying down or elevating the legs can decrease CVR.
- Mechanical devices: Intra-aortic balloon pumps and extracorporeal membrane oxygenation (ECMO) can assist circulation and reduce CVR.
What are the implications of abnormal CVR?
Abnormal CVR can have significant consequences on cerebral function. Increased CVR can lead to decreased CBF and cerebral ischemia, while decreased CVR can result in increased CBF and potential hemorrhagic complications.
Final Words:
- CVR is a critical measure of cerebral circulation and is influenced by various factors.
- Monitoring and management of CVR is important for maintaining adequate cerebral blood flow and preventing cerebral ischemia.
CVR also stands for: |
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| All stands for CVR |