Search results
Results from the WOW.Com Content Network
Central cyanosis is often due to a circulatory or ventilatory problem that leads to poor blood oxygenation in the lungs. It develops when arterial oxygen saturation drops below 85% or 75%. [5] Acute cyanosis can be a result of asphyxiation or choking and is one of the definite signs that ventilation is being blocked.
A bruise, also known as a contusion, is a type of hematoma of tissue, [3] the most common cause being capillaries damaged by trauma, causing localized bleeding that extravasates into the surrounding interstitial tissues. Most bruises occur close enough to the epidermis such that the bleeding causes a visible discoloration.
Raynaud syndrome can precede these other diseases by many years, making it the first presenting symptom. This may be the case in the CREST syndrome, of which Raynaud's is a part. [citation needed] Patients with secondary Raynaud's can also have symptoms related to their underlying diseases.
Rarely, ACS can develop after a minor injury or another medical issue. [12] It can also affect the thigh, buttock, hand, abdomen, and foot. [19] [14] The most common cause of acute compartment syndrome is a fractured bone, usually the tibia. [14] [27] Leg compartment syndrome occurs in 1% to 10% of tibial fractures. [6]
Ischemia is a vascular disease involving an interruption in the arterial blood supply to a tissue, organ, or extremity that, if untreated, can lead to tissue death. It can be caused by embolism, thrombosis of an atherosclerotic artery, or trauma. Venous problems like venous outflow obstruction and low-flow states can cause acute arterial ischemia.
Livedo reticularis is a common skin finding consisting of a mottled reticulated vascular pattern that appears as a lace-like purplish discoloration of the skin. [1] The discoloration is caused by reduction in blood flow through the arterioles that supply the cutaneous capillaries, resulting in deoxygenated blood showing as blue discoloration ().
Lymphedema, also known as lymphoedema and lymphatic edema, is a condition of localized swelling caused by a compromised lymphatic system. [2] The lymphatic system functions as a critical portion of the body's immune system and returns interstitial fluid to the bloodstream.
[43] [44] [45] Causes of the reduced blood flow can include changes in the systemic circulation (e.g. low blood pressure), or local factors such as constriction of blood vessels or a blood clot. In most cases, no specific cause can be identified. [46]