small vein

small vein

a vein in which the three tunics are poorly defined and thin; longitudinal elastic networks occur and the smooth muscle of the media, which is circularly arranged, may be incomplete or in one or two layers.
References in periodicals archive ?
After palpating the patient's hand for several minutes, the phlebotomist cleans the area with alcohol, then performs venipuncture into a small vein. In an attempt to get blood flow, the phlebotomist adjusts the needle; however, after several minutes of no blood return, she removes the needle.
Together, the combination of a relatively small vein around a PIVC, branches remote from the PIVC, and valves central to the PIVC tip may create a segment with limited blood flow availability and a nonexistent "aspiration reservoir" and may explain the variable success with PIVC aspiration that is observed clinically (Figure 3).
My last test showed I have a rare disorder called dural venous sinus thrombosis of a small vein. I have seen several specialists that seem to have little knowledge.
The AVM was drained through one small vein into the venous structure also located on the left front side of the brain.
There's also a CT coronary angiogram, where the dye is injected into a small vein in the arm and a CT scan used to create an image of the patient's heart.
If it is a small vein and deep, most likely I'll use a butterfly."
A tiny arterial branch supplies blood to each node, there is a small vein as well as an efferent lymphatic leaving the hilum (2).
It also proves that small vein mining -- regarded as a dead North American art -- is alive and well in Latin America.
AVMs are not tumors but distortions of the capillaries connecting an arteriole and a small vein in the brain.
Small vein size may be a manifestation of a remote episode of venous thrombosis.
HOW IT WORKSFINNIE'S surgery involves clogged arteries being bypassed by a small vein, probably grafted from his leg.
After seeing a specialist in Manchester on Friday, Flintoff was diagnosed with a clot in a small vein - and was immediately prescribed a course of blood-thinning anticoagulant tablets.

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