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Effect of Oral Contraceptives on Blood Viscosity.

To assess the effect of oral contraceptives on blood viscosity and hematocrit, 47 women ages 19 to 30 were given either sequential or combination oral contraceptives. Blood viscosity and hematocrit were examined for 2 months before, and for 8 to 12 months during the course of treatment. In 8 of the 47 women, 5 from the sequential and 3 from the combination groups, blood viscosity and hematocrit levels increased during treatment. Average blood viscosity in these 8 increased up to 33% after 3 months and as much as 65% after 6 months.

Smoking and Relation to Other Risk Factors in Postmenopausal Women With Coronary Artery Disease, With Particular Reference to Whole Blood Viscosity and Beta-Cell Function.


OBJECTIVES: To investigate possible associations between smoking habits and other coronary risk factors in postmenopausal women with knowncoronary heart disease (CHD).

SETTING: The study was conducted at a university clinic.

SUBJECTS: A total of 118 postmenopausal women with CHD verified with angiography, consecutively recruited.

Time Since Menopause Does Not Affect Plasma Viscosity, Plasma Thromboxane Levels and Doppler Findings.


OBJECTIVES: To evaluate whether the use of transdermal hormone replacement therapy (HRT), in women within 5 years of menopause comparedwith women who were postmenopausal for > 5 years, would significantly influence thromboxane B2 levels, plasma viscosity and Doppler flow parameters at the level of the uterine, internal carotid, ophthalmic and bladder wall arteries.

Effects of Hormone Replacement Therapy on Plasma Viscosity and Doppler Variations in Postmenopausal Non-Smokers and Heavy Smokers.


OBJECTIVES: To evaluate the effects of transdermal hormone replacement therapy (HRT) on some biological cardiovascular risk factors, specificallythromboxane B2 level and plasma viscosity. Furthermore, we investigated Doppler flow modifications at the level of the uterine, internal carotid, ophthalmic and bladder wall arteries, and evaluated whether there were significant differences, in the examined parameters, between postmenopausal women who were non-smokers and heavy smokers.

Transdermal HRT and Doppler Findings in Normotensive and Hypertensive Postmenopausal Patients.


OBJECTIVE: To evaluate the effects of transdermal hormone replacement therapy (HRT) on plasma viscosity, serum levels of thromboxane B2(TXB2) and vascular impedance in the uterine, bladder wall, internal carotid and ophthalmic arteries in normotensive and hypertensivepostmenopausal patients.

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