Chronic Venous Insufficiency
Chronic Venous Insufficiency - Related Videos
01:13
Insufficient Sleep and Sleep Deprivation
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2024
Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being. Sleep deprivation is a more severe form of sleep loss...
08:14
Central Venous Catheter Insertion: Subclavian Vein
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2023
Source: James W Bonz, MD, Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA Central venous access is necessary in a multitude of clinical situations for hemodynamic monitoring, medication delivery, and blood sampling. There are three veins in the body that are accessed for central venous cannulation: the internal jugular, the subclavian, and the femoral vein. Central venous access via the subclavian vein has several advantages over other possible locations. The subclavian...
10:45
Central Venous Catheter Insertion: Femoral Vein
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2023
Source: James W Bonz, MD, Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA Central venous access is necessary in a multitude of clinical situations, including vascular access, vasopressor and caustic medication delivery, central venous pressure monitoring, volume resuscitation, total parental nutrition, hemodialysis, and frequent phlebotomy. There are three veins in the body that are accessed for central venous cannulation: the internal jugular, the subclavian, and the...
01:04
Venous Return
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2024
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...
06:08
A Novel Method: Super-selective Adrenal Venous Sampling
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Cited by 44 •
2017
'Super-selective' adrenal venous sampling (ssAVS, also called segmental adrenal venous sampling: sAVS) was performed using a micro-catheter to identify adrenal segment(s) that produce excessive amounts of hormones. The ssAVS technique was described, cases in which adrenal segmental lesion(s) were identified by ssAVS were presented, and the usefulness of ssAVS in future adrenal research was discussed.
FAQs
When venous valves do not close effectively, blood moves backward and remains in the legs instead of returning efficiently to the heart. This accumulation raises venous pressure, or venous hypertension. Persistent pressure contributes to swelling, discomfort, pigmentation, and progressive skin damage, creating conditions in which ulcers may develop in advanced disease.
Venous hypertension links impaired drainage with many of the disorder’s visible and symptomatic effects. Increased pressure in the leg veins promotes edema and can contribute to skin changes such as pigmentation. Recognizing this mechanism helps clinicians understand why reducing venous pressure and improving drainage are central goals of treatment and prevention.
Abnormal venous return may reflect reflux, in which blood flows backward through ineffective valves, or obstruction that limits drainage. These mechanisms can be evaluated when clinicians assess leg symptoms, skin findings, and blood flow. Distinguishing the underlying flow problem supports a more targeted approach to compression, wound care, or procedures intended to improve venous drainage.
Duplex ultrasound provides a way to examine blood flow in the leg veins and assess for venous reflux or obstruction. Clinicians interpret these findings alongside symptoms and skin changes rather than relying on imaging alone. The combined assessment helps identify impaired venous drainage and informs decisions about conservative management or procedures.
Compression therapy, leg elevation, and exercise are commonly used to support venous drainage and manage symptoms. Compression helps address the pressure-related effects of impaired return, while elevation and exercise complement the treatment plan. These measures can reduce the burden of swelling and support efforts to prevent progression when incorporated into clinical care.
Skin findings, pigmentation, and ulcers signal the need for ongoing clinical attention, particularly when disease has advanced. Wound care supports management of ulcerated areas, while compression, elevation, exercise, or procedures may address the impaired drainage contributing to the problem. Together, these approaches aim to support healing and reduce further progression of lower-limb complications.