Arterial distensibility and pulse pressure. Measurements and clinical significance in hypertension

G Mancia1, C Giannattasio

  • 1Clinica Medica, University of Milano, Ospedale S. Gerardo dei Tintori, Monza, Italy.

Insights

Arterial distensibility is crucial for cardiovascular health. Reduced distensibility in hypertension and other diseases can be reversed with therapy, and pulse pressure may indicate cardiovascular risk.

Area of Science:

  • Cardiovascular Physiology
  • Vascular Mechanics
  • Hypertension Research

Background:

  • Arterial distensibility is a key cardiovascular function.
  • Dysfunctional arterial mechanics are implicated in various cardiovascular diseases.
  • Understanding these changes is vital for risk assessment and management.

Purpose of the Study:

  • To analyze local arterial distensibility in hypertension and related cardiovascular conditions.
  • To differentiate arterial distensibility patterns in various hypertensive states.
  • To evaluate the impact of therapy on arterial mechanical function.

Main Methods:

  • Measurements of local arterial distensibility.
  • Comparative analysis across different cardiovascular disease states.
  • Assessment of therapeutic interventions' effects.

Main Results:

  • Isolated systolic hypertension shows diffuse reduction in distensibility.
  • Essential hypertension exhibits reduced distensibility in large elastic arteries.
  • Familial hypercholesterolemia, heart failure, and diabetes also impair arterial mechanics.
  • Therapy can often restore normal arterial distensibility.

Conclusions:

  • Arterial distensibility is significantly altered in hypertension and other cardiovascular diseases.
  • Specific patterns of distensibility reduction exist for different conditions.
  • Pulse pressure serves as a valuable indirect indicator of arterial distensibility and cardiovascular risk.

Related Concept Videos

Pulse01:05

Pulse

The pulse is one of the most fundamental physiological indicators of the body's cardiovascular health. It is the rhythmic expansion and contraction of the arterial walls in response to the pressure generated by the heart's pumping action.
Pulse Rate and its Significance
Pulse rate, often measured in beats per minute (bpm), reflects the heart rate (HR), which is influenced by numerous factors such as stress, physical activity, and hormonal changes. A normal resting adult pulse rate falls between...
Blood Pressure01:30

Blood Pressure

Blood pressure (BP) is the pressure or force of blood exerted on the artery's walls as it circulates through the body. It is essential for maintaining blood flow throughout the body.
The average BP in an adult is typically around 120/80 mmHg (millimeters of mercury). In this measurement, the numerator (120) indicates the systolic pressure, which is the pressure in the arteries during the contraction of the heart's ventricles as blood is expelled. The denominator (80) represents the diastolic...
Sites for measuring blood pressure01:21

Sites for measuring blood pressure

Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement
Blood Pressure01:24

Blood Pressure

The movement of blood in a human body, commonly referred to as blood flow, is determined by the volume of blood that traverses a certain section of the bodily system per unit time. It is the rhythmic contraction of the heart's ventricles that primarily instigates this movement. As the ventricles contract, blood is forced into the prominent arteries, which then flow from areas of greater pressure to lower pressure areas. This movement continues into smaller arteries and arterioles and...
Measurement of Blood Pressure01:17

Measurement of Blood Pressure

Assessing blood pressure is a standard procedure executed in virtually all medical environments. The method utilized today was established over a hundred years ago by an innovative Russian doctor, Dr. Nikolai Korotkoff. The soft ticking noise, known as Korotkoff sounds, heard while taking blood pressure readings results from turbulent blood flow within the vessels. The apparatus required for this procedure includes a sphygmomanometer, a blood pressure cuff attached to a gauge, and a stethoscope.
Pulse01:16

Pulse

When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical indicator...