Feedback carotid venous liver - symptoms and causes

2021-03-16 12:00 AM

Carotid intravenous liver feedback is helpful in combination with other signs and symptoms and will increase the value of the JVP increase. It is sensitive but is not specific to any disease, so the clinical overview must be considered.

Description

Pressing firmly on the right top quarter of the abdomen (liver area) causes carotid venous pressure (JVP) to become more pronounced and sometimes higher. The carotid venous hepatic response is positive when there is an increase in JVP> 3cmH2O for> 15s.

Feedback carotid venous liver

Causes

Any cause of ventricular dysfunction - a disturbance of systolic or diastolic function.

Heart failure and volume overload.

Increased right ventricular afterload.

Note: This symptom is not seen in heart compression.

Mechanism

Putting pressure on the right quarter of the abdomen helps the venous blood return to the right heart through the lower aorta. The increase in right cardiac blood volume plus increased end-systolic and diastolic pressure in the right atria and ventricles (due to right cardiac dysfunction) and venous blood and pressure is reflected back into the carotid vein. The right ventricle cannot contain more venous blood back.

Meaning

Useful in combination with other signs and symptoms and will increase the value of the JVP increase.

It is sensitive but not specific to any disease, so the clinical overview must be considered:

With shortness of breath, can predict heart failure: PLR 6.0, NLR - 0.7834.

In the presence of dyspnea, it is possible to predict an increase in pulmonary capillary compression> 15 mmHg: PLR 6.7, NLR 0.08.

Detected increased left ventricular diastolic pressure with a sensitivity of 55–84%, specificity 83–98%, PLR 8.0, NLR 0.3.

If breathing is not difficult, find another cause.