reactive hyperemia


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hyperemia

 [hi″per-e´me-ah]
an excess of blood in a part; called also engorgement. adj., adj hypere´mic.
active hyperemia (arterial hyperemia) that due to local or general relaxation of arterioles.
leptomeningeal hyperemia congestion of the pia-arachnoid.
passive hyperemia that due to obstruction of flow of blood from the area.
reactive hyperemia that due to increase in blood flow after its temporary interruption.
venous hyperemia passive hyperemia.

re·ac·tive hy·per·e·mi·a

hyperemia following the arrest and subsequent restoration of the blood supply to a part.

re·ac·tive hy·per·e·mi·a

(rē-ak'tiv hī'pĕr-ē'mē-ă)
Excess blood following the arrest and subsequent restoration of the blood supply to a part.

hyperemia

an excess of blood in a part.

active hyperemia, arterial hyperemia
that due to local or general relaxation of arterioles.
leptomeningeal hyperemia
congestion of the pia-arachnoid.
passive hyperemia
that due to obstruction to flow of blood from the area.
pulpal hyperemia
hyperemia of the tooth pulp.
reactive hyperemia
that due to increase in blood flow after its temporary interruption.
venous hyperemia
passive hyperemia.
References in periodicals archive ?
Post-occlusive reactive hyperemia (PORH), an index of microvascular function was calculated as (peak cutaneous blood flow--baseline cutaneous blood flow)/baseline cutaneous blood flow x 100 (12).
Amongst 18 % patients of 2nd group during conducting of test for reactive hyperemia it was registered the paradoxical vasoconstrictive reaction, indicating a more expressed endothelial dysfunction.
The primary outcome of interest for this pilot study was comparing the 6 week change in brachial artery vasodilator response to reactive hyperemia between the folic acid and placebo groups.
The noninvasive test, reactive hyperemia peripheral arterial tonometry (RH-PAT), measures how the volume of a fingertip changes as blood flows through it.
Forearm blood flow was measured during reactive hyperemia and reflected endothelium-dependent vasodilation.
Subsequently, peak flux (PF; in volts) was assessed during reactive hyperemia following a 3-min arterial occlusion induced by inflating a cuff around the arm to 200 mmHg.
Lasor Doppler derived measures of cutaneous blood flow in response to post-occlusive reactive hyperemia have been used as a test for microvascular endothelial function (10).
Thus, the impaired response to reactive hyperemia found in hypertensive patients compared with normotensive subjects is likely to attribute to the presence of hypertension.
The researchers found that the effects of HAGE on FMD and reactive hyperemia were entirely prevented by benfotiamine.
Endothelium-dependent and independent dilations were expressed as the percentage change in the brachial artery diameter from baseline to following reactive hyperemia and to following sublingual nitrate administration.
Studies in patients with SCI showed the following alterations in skin perfusion: the skin oxygenation uncompressed zone is lower in patients with SCI than in people without SCI [22-23]; the resistance of the microcirculation to external pressure, defined as the pressure caused by the closure of the capillaries, is impaired in patients with SCI [24]; the vasomotor response to a direct or alternating pressure and reactive hyperemia are impaired in people with SCI and predispose them to ischemia of the skin [25]; and finally, venous compliance is lower in people with SCI than in people without SCI [26].

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