Systemic Vascular Resistance Calculator

Welcome to our tutorial on systemic vascular resistance (SVR). In the field of cardiovascular health, SVR plays a vital role in assessing the resistance to blood flow within the systemic circulation. This parameter provides valuable insights into the functioning of the blood vessels and the overall cardiovascular system. In this guide, we will explore the concept of systemic vascular resistance, discuss its significance, and explain the formula to calculate SVR. Let's delve into the world of cardiovascular health and understand the importance of systemic vascular resistance.

Systemic Vascular Resistance Calculator
Systemic Vascular Resistance Calculator Results
Systemic Vascular Resistance = dynes/sec/cm-5

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The Significance of Systemic Vascular Resistance

Systemic vascular resistance refers to the resistance encountered by the blood as it flows through the systemic circulation, which includes all the blood vessels except those in the lungs. It is influenced by factors such as the diameter of the blood vessels, the length of the vessels, and the viscosity of the blood. SVR is an essential parameter in assessing the health and functioning of the cardiovascular system. Abnormalities in systemic vascular resistance can indicate underlying cardiovascular conditions and help guide medical interventions.

The Formula for Calculating Systemic Vascular Resistance

The formula to calculate systemic vascular resistance is as follows:

SVR = (Mean Arterial Pressure - Central Venous Pressure) / Cardiac Output


  • Mean Arterial Pressure (MAP) represents the average pressure in the arteries during one cardiac cycle.
  • Central Venous Pressure (CVP) refers to the pressure in the right atrium of the heart.
  • Cardiac Output is the volume of blood pumped by the heart per unit of time.

The systemic vascular resistance is expressed in units called "dynes × sec/cm5," which represents the resistance exerted by the blood vessels against the flow of blood.

Relevance of Systemic Vascular Resistance in Medical Fields

Systemic vascular resistance is highly relevant in various medical fields, particularly in the assessment and management of cardiovascular conditions. Medical professionals, including cardiologists and intensivists, rely on SVR measurements to evaluate the effectiveness of treatment interventions, monitor the response to medications, and assess the overall hemodynamic status of patients. Changes in SVR can help identify conditions such as hypertension, heart failure, and septic shock, among others.

Real-Life Application

Let's consider a real-life example. A patient's mean arterial pressure (MAP) is measured as 90 mmHg, the central venous pressure (CVP) is 5 mmHg, and the cardiac output is 5 liters per minute. Using the formula mentioned above, we can calculate the systemic vascular resistance (SVR) as follows:

SVR = (90 - 5) / 5 = 17 dynes × sec/cm5

In this case, the calculated SVR is 17 dynes × sec/cm5. This value provides insights into the resistance encountered by the blood within the systemic circulation for this particular patient. By comparing this value to reference ranges and considering the patient's clinical condition, healthcare professionals can make informed decisions regarding treatment and management.

Achievements in the Study of Systemic Vascular Resistance

While there are no specific individuals mentioned for their achievements in the study of systemic vascular resistance, countless researchers, physicians, and scientists have contributed to our understanding of cardiovascular health and the significance of SVR. Their work has paved the way for advancements in the diagnosis, treatment, and management of cardiovascular conditions.


Systemic vascular resistance is a crucial parameter in assessing the resistance to blood flow within the systemic circulation. By understanding the concept of SVR and its calculation formula, healthcare professionals can gain valuable insights into the functioning of the cardiovascular system and make informed decisions regarding patient care. The relevance of SVR extends across various medical fields, making it an essential component in diagnosing and managing cardiovascular conditions. Through ongoing research and advancements, we continue to deepen our understanding of systemic vascular resistance and its implications for cardiovascular health.

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Please note that the Systemic Vascular Resistance Calculator is provided for your personal use and designed to provide information and information relating to the calculations only. The Systemic Vascular Resistance Calculator should not be used for you to self-diagnose conditions, self-medicate or alter any existing medication that you are currently prescribed by your Doctor. If the Systemic Vascular Resistance Calculator produces a calculation which causes you concern, please consult your Doctor for support, advice and further information.