Related Experiment Video
Updated: May 11, 2026
09:33
A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology
Published on: February 7, 2015
Sex differences in noninvasive vascular function in the community.
Renate B Schnabel1, Moritz P Biener, Sandra Wilde
1Department of General and Interventional Cardiology, University Heart Center, Hamburg Eppendorf, Hamburg, Germany. schnabelr@gmx.de
Journal of Hypertension
|May 14, 2013
Summary
Women exhibit superior vascular function compared to men, a difference not solely explained by sex hormones or menopausal status. Reproductive history factors like age at menarche and breastfeeding duration also influence vascular health.
Area of Science:
- Cardiovascular Physiology
- Reproductive Endocrinology
- Vascular Biology
Background:
- Noninvasive vascular function assessment is crucial for cardiovascular health.
- The influence of sex, hormones, and reproductive history on vascular function in the general population remains unclear.
Purpose of the Study:
- To investigate the relationship between noninvasive vascular function, sex, sex hormones, and reproductive history.
- To compare vascular function between men and women in a community-based cohort.
Main Methods:
- Simultaneous assessment of flow-mediated dilation (FMD) and peripheral arterial tonometry in 454 women and 100 men.
- Measurement of plasma estradiol, progesterone, luteinizing hormone, and follicle-stimulating hormone.
- Recording of menstrual cycle phase and reproductive history (age at menarche, breastfeeding duration).
Main Results:
- Vascular function was blunted in men compared to women, independent of menopausal status and cardiovascular risk factors.
- Vascular reactivity varied during the menstrual cycle, correlating with estradiol and progesterone levels.
- Estradiol levels were associated with FMD in women; age at menarche and breastfeeding duration correlated with brachial artery diameter and FMD.
Conclusions:
- Sex differences in conduit and peripheral arterial function, favoring women, are not fully explained by sex hormones or menopausal status.
- Age at menarche and duration of breastfeeding are significant factors related to vascular function in women.
- Further research is warranted to elucidate the impact of reproductive history on vascular health.
Related Concept Videos
01:20Vascular Resistance
Vascular resistance is a critical concept in understanding blood flow dynamics in the circulatory system. It refers to the resistance that blood encounters as it flows through the blood vessels. This resistance is a key factor in determining blood pressure and cardiac workload.
The primary determinants of vascular resistance are vessel diameter, blood viscosity, and vessel length. Among these, vessel diameter plays the most significant role due to the fourth power relationship described by...
The primary determinants of vascular resistance are vessel diameter, blood viscosity, and vessel length. Among these, vessel diameter plays the most significant role due to the fourth power relationship described by...
01:27Assessment of the Cardiovascular System III: Palpation
Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...
01:19Imaging Studies VII: Vascular Imaging
DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...