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Postural orthostatic tachycardia syndrome (POTS) is a condition characterized by an abnormally large increase in heart rate upon sitting up or standing. [1] POTS is a disorder of the autonomic nervous system that can lead to a variety of symptoms, [10] including lightheadedness, brain fog, blurred vision, weakness, fatigue, headaches, heart palpitations, exercise intolerance, nausea ...
Chronic venous insufficiency (CVI) is a medical condition in which blood pools in the veins, straining the walls of the vein. [ 1 ] The most common cause of CVI is superficial venous reflux which is a treatable condition. [ 2 ] As functional venous valves are required to provide for efficient blood return from the lower extremities, this ...
Peripheral neuropathy may be classified according to the number and distribution of nerves affected (mononeuropathy, mononeuritis multiplex, or polyneuropathy), the type of nerve fiber predominantly affected (motor, sensory, autonomic), or the process affecting the nerves; e.g., inflammation (), compression (compression neuropathy), chemotherapy (chemotherapy-induced peripheral neuropathy).
When this happens, it’s known as essential hypertension or primary hypertension. High blood pressure can be caused by a combination of lifestyle factors like: Having overweight or obesity ...
The treatment can also boost the rate of fluid removal along lymphatic tracks to decrease swelling, even treating lymphedema in breast cancer patients. And while it can help with the kind of ...
Underlying causes include weak or damaged valves in the veins. [1] They are typically diagnosed by examination, including observation by ultrasound. [2] By contrast, spider veins affect the capillaries and are smaller. [1] [7] Treatment may involve lifestyle changes or medical procedures with the goal of improving symptoms and appearance. [1]
Aortic valve replacement. A quadricuspid aortic valve (QAV) is a rare congenital heart defect characterized by the presence of four cusps, instead of the usual three found normally in the aortic valve. [1] It is a defect that occurs during embryological development of the aortic trunk during gestation. [2]
29.16% (from 48 to 62 per 100,000) and 22.7% (from 3.7 to 4.54 per 100,000) from 2007 to 2014. Heyde's syndrome is a syndrome of gastrointestinal bleeding from angiodysplasia in the presence of aortic stenosis. [1][2] It is named after Edward C. Heyde, MD, who first noted the association in 1958. [3] It is caused by cleavage of Von Willebrand ...