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Results for “Capillary Resistance”

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At least 55 records · Page 3Linked to original sources
PubMed1978

Reduced capillary resistance in allergic patients.

Fifty four of 67 allergic children (81%) had a pathologically reduced capillary resistance (CR) of less than 16 cm Hg. Five of the 13 allergic children with normal CR were treated with corticosteroids. Prednisone improved CR in on patient for at least 24 h, and this was reflected by improvement of hemorrhagic parameters such as bleeding intensity, bleeding pattern and blood loss. There was no correlation between CR and IgE levels. 90% of the symptomatic relatives of allergic children had a reduced CR, but only 44% of asymptomatic relatives. CR presents a simple additional tool for diagnosing allergy and might give hints to the carrier state of allergy.

Adolescent↗
PubMed1989

[The irritant effect of dithranol using capillary resistance measurement].

The effect of topically applied dithranol on the capillary resistance (CR) was studied both in healthy volunteers and in clinically unaffected skin of psoriatic patients. The CR of the psoriatic patients was significantly lower than that of the healthy persons. O.10% and 0.25% dithranol ointment induced a significant decrease of CR in the skin of both groups. This decrease was prevented or at least reduced, if the patients had previously been treated with either the antihistamine clemastine or the cyclooxygenase-inhibitor indomethacin. The effect of dithranol on the CR was also moderated, if 5% coal tar had been added to the dithranol preparation.

Adult↗
PubMed1962

The physics of blood flood in capillaries. II. The capillary resistance to flow.

A previous communication described the peculiar motion of the plasma trapped between erythrocytes in a capillary (bolus flow). In this paper the effect of this motion on capillary resistance to flow, as well as on dissipative effects associated directly with the cells, are described. The resistance that would be associated with plasma in bolus flow at high Reynolds numbers (relative to a capillary value of 0.01) was studied in a model, in which air bubbles, separated by short segments of water, passed along a glass tube. The resistance to flow, especially with short boluses, was at least ten times greater than that associated with Poiseuille flow. In a second series of experiments at lower Reynolds numbers, a single bolus of liquid was forced by air pressure along a glass tube. In these latter experiments, which more closely simulate biological conditions, the mean resistance to flow was only 30 per cent greater than that associated with Poiseuille flow. In the final series of experiments human blood and plasma, diluted in acid-citrate dextrose (A.C.D.) in varying degrees, were forced through glass micropipettes of capillary dimensions. The mean apparent viscosity of whole blood was found to exceed that of plasma by only about 5 per cent, thus verifying a conjecture to this effect made by Fahraeus and Lindqvist in 1931.

Biophysical Phenomena↗
PubMed1975

Effects of some phlogistics on the capillary resistance of the rabbit conjunctiva.

Applying certain phlogistics (10% ol. sinapis, tinct. capsici, Dionin) and 1.5% histamine solution to the conjunctival sac of rabbits led to a mathematically significant decrease in conjunctival capillary resistance in every experimental animal. The effect occurred 20 to 30 min after application of the various pharmacons.

Animals↗