Related Experiment Video
Updated: Aug 8, 2026
08:27
Adult Mouse Venous Hypertension Model: Common Carotid Artery to External Jugular Vein Anastomosis.
Published on: January 27, 2015
Summary
A common cervical venous hum, often mistaken for serious heart conditions, is prevalent in young adults and older individuals. This normal sound can be identified by its ability to disappear with gentle pressure on the jugular vein.
Area of Science:
- Cardiology
- Vascular Auscultation
Background:
- The cervical venous hum is a common finding during auscultation.
- It is often misdiagnosed as pathological murmurs, leading to unnecessary investigations.
Purpose of the Study:
- To determine the incidence of normal cervical venous hum across different age groups.
- To highlight clinical differentiation between venous hum and pathological murmurs.
Main Methods:
- Auscultation was performed on 200 individuals aged 18 to 76.
- Clinical differentiation was assessed by applying pressure over the jugular vein.
Main Results:
- The incidence of cervical venous hum was 47% in young adults and 21% in middle and older age groups.
- The hum could be silenced by light pressure on the jugular vein, distinguishing it from pathological murmurs.
Conclusions:
- The normal cervical venous hum is more common than previously thought, especially in younger individuals.
- Clinicians should be aware of this common finding and its differentiating characteristics to avoid misdiagnosis.
Related Concept Videos
01:10Veins as Blood Reservoirs
Veins, while chiefly responsible for circulating blood back to the heart, also function as storage vessels for blood. They house approximately 64 percent of the body's total blood volume, a feat made possible by their high capacitance—the inherent ability to expand and accommodate large volumes of blood, even under low pressure. The large diameter and thin walls of veins augment their distensibility, significantly more so than arteries, due to their classification as capacitance vessels. When...
01:04Venous Return
The circulatory system plays a crucial role in ensuring the optimal functioning of the human body. One of its critical components is venous return - the process that completes the blood circulation cycle. This article will delve into the concept of venous return, how it works, and its significance to our health.
What is Venous Return?
Venous return refers to the rate at which blood flows back to the heart from the body's peripheral veins. It's an integral part of the circulatory system as it...
What is Venous Return?
Venous return refers to the rate at which blood flows back to the heart from the body's peripheral veins. It's an integral part of the circulatory system as it...
01:26Arteries of the Head and Neck
The human body's intricate network of arteries ensures that every organ system receives the necessary oxygen and nutrients for optimal function. The arterial network in the head and neck region is particularly complex, providing vital blood flow to the brain, eyes, and other critical structures. Prominent arteries in this region include the internal carotid arteries and the vertebral arteries.
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
01:19Veins of Head and Neck
The blood drainage from the head and neck is primarily managed by three pairs of veins: the external jugular, internal jugular, and vertebral veins. The external jugular veins drain superficial scalp and face structures, passing over the sternocleidomastoid muscles to empty into the subclavian veins.
On the other hand, the vertebral veins, unlike their arterial counterparts, are not primarily responsible for brain drainage. Instead, they drain the cervical vertebrae, spinal cord, and some small...
On the other hand, the vertebral veins, unlike their arterial counterparts, are not primarily responsible for brain drainage. Instead, they drain the cervical vertebrae, spinal cord, and some small...
01:17Veins of Upper Limbs
The human circulatory system, a marvel of biological engineering, is a complex network of vessels that transport blood throughout the body. Among these, the veins responsible for carrying blood from the upper limbs are divided into two categories: deep and superficial.
The deep venous system is primarily composed of the ulnar and radial veins. The ulnar vein, which drains the fingers through the superficial palmar venous arches, and the radial vein, which serves the palms via the deep palmar...
The deep venous system is primarily composed of the ulnar and radial veins. The ulnar vein, which drains the fingers through the superficial palmar venous arches, and the radial vein, which serves the palms via the deep palmar...
01:27Assessment of the Cardiovascular System III: Palpation
Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...