precapillary

precapillary

 [pre-kap´ĭ-lar″e]
1. located just to the arterial side of a capillary.

pre·cap·il·lar·y

(prē-kap'i-lār'ē),
Preceding a capillary; an arteriole or venule.

precapillary

/pre·cap·il·lary/ (-kap´ĭ-lar″e)
1. located just to the arterial side of a capillary.

pre·cap·il·lar·y

(prē-kap'i-lar-ē)
Preceding a capillary; an arteriole or venule.

precapillary

a vessel lacking complete coats, intermediate between an arteriole and a capillary.

precapillary sphincters
capillaries with a muscle layer which controls the flow of blood from the arterioles into the capillary bed.
References in periodicals archive ?
Raynaud's phenomenon is an abnormal vasospasm of digital arteries, precapillary arterioles, and dermal arteriovenous shunts that occurs in response to cold and various other stimuli.
Delayed SBP recovery is attributed to autonomic dysfunction, high precapillary resistance at full dilation associated with an increase in wall/lumen ratio (16), and low arterial compliance in individuals with vascular smooth muscle hypertrophy and subclinical arteriosclerosis (35).
She and her associates prospectively analyzed data from 121 patients referred to the Medical University of Vienna between April 2007 and October 2008 for clinical and transthoracic echocardiographic suspicion of precapillary PH (systolic pulmonary artery pressure of 36 mm Hg or greater).
Apart from sample size considerations, this may be partially explained by the complexity of the pathophysiological mechanisms of microcirculatory alterations such as vasoplegia, shunting, precapillary dysfunction and endothelial dysfunction (7-12).
Pulmonary arterial or precapillary pulmonary hypertension is caused by increased pulmonary resistance.
The microvascular damage occurs as a result of poor glycemic control causing precapillary damage.
This refractile material accumulates as particles (often greater than 10 [micro]m in size) accompanied by, or within, giant cells in the perivascular sheath of small precapillary arteries.
Langleben D, Dupuis J, Langleben I, et al: Etiology-specific endothelin-1 clearance in human precapillary pulmonary hypertension.
The hypoxemia in HPS patients has several causes: diffuse shunts caused by precapillary and capillary intrapulmonary vascular dilatations, impaired hypoxic vasoconstriction, impaired matching of ventilation to perfusion, pleural effusions, and diaphragmatic dysfunction.
Another approach for simultaneous separation of cations and anions is the formation of the anionic complex between the auxiliary ligand and the analyte metal ions by precapillary or on-capillary complexation.
The capillary hydrostatic pressure is regulated by the smooth muscle tone in the precapillary arterioles and the postcapillary venules.