Systemic Vascular Resistance Calculator

[fstyle]

[/fstyle]

Greetings, brave explorer! Embarking on a journey to understand the mysteries of Systemic Vascular Resistance? Fasten your seatbelts and prepare for a thrilling ride through the dynamic realm of hemodynamics. Fear not, we’ll make sure the journey is more exciting than it sounds!

Table of Contents

Systemic Vascular Resistance Calculation Formula

Get ready for the magic formula:

SVR = (MAP – CVP) / CO

In this equation, MAP refers to Mean Arterial Pressure, CVP stands for Central Venous Pressure, and CO is Cardiac Output. All of these are measured in mmHg.

Categories of Systemic Vascular Resistance

Category	Range
Low Resistance	Less than 800 dynes/sec/cm5
Normal Resistance	800-1200 dynes/sec/cm5
High Resistance	More than 1200 dynes/sec/cm5

Calculation Examples

Let’s illustrate the calculations with some fun examples:

Individual	SVR Calculation	Result
Healthy Adult	(93 – 2) / 5 = 18.2	Normal
Hypertensive Patient	(125 – 2) / 3.5 = 35.1	High

Remember, these examples are entirely fictional, and should not be used for any medical diagnosis!

Calculation Methods

Method	Advantage	Disadvantage	Accuracy
Invasive Monitoring	Most accurate	Invasive	High
Non-invasive Monitoring	Less invasive	Less accurate	Moderate

Evolution of SVR Calculation

Year	Development
1970s	Introduction of Invasive Monitoring
1990s	Introduction of Non-invasive Monitoring

Limitations of SVR Calculation

Accuracy: The accuracy of the SVR calculation largely depends on the method used.
Invasiveness: Some methods are invasive and may not be suitable for all patients.

Alternative Methods

Method	Pros	Cons
Doppler Echocardiography	Non-invasive	Less accurate

FAQs

What is Systemic Vascular Resistance? Systemic Vascular Resistance is the resistance to blood flow in the body’s blood vessels.
How is SVR calculated? SVR is calculated using the formula: SVR = (MAP – CVP) / CO.
What is the normal range for SVR? The normal range for SVR is 800-1200 dynes/sec/cm5.
What factors can affect SVR? Factors that can affect SVR include blood vessel diameter, blood viscosity, and total blood vessel length.
Why is SVR important? SVR is important because it helps regulate blood pressure and blood flow.
How does SVR affect blood pressure? An increase in SVR can result in higher blood pressure, while a decrease can result in lower blood pressure.
What can cause low SVR? Low SVR can be caused by various factors, including septic shock, liver disease, and certain medications.
What can cause high SVR? High SVR can be caused by factors such as hypertension, atherosclerosis, and certain medications.
How can SVR be increased? SVR can be increased by factors such as vasoconstriction, increased blood viscosity, or increased blood vessel length.
How can SVR be decreased? SVR can be decreased by factors such as vasodilation, decreased blood viscosity, or decreased blood vessel length.

References

Meta Description

Embark on a thrilling ride through the dynamic realm of hemodynamics with our Systemic Vascular Resistance Calculator. Get ready to calculate, learn, and explore like never before!