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Related Concept Videos

Hypertension III: Clinical Manifestations and Diagnostic Studies01:30

Hypertension III: Clinical Manifestations and Diagnostic Studies

Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
Hypertension I: Introduction01:28

Hypertension I: Introduction

Hypertension is a widespread, long-term medical condition where blood pressure in the arteries remains elevated. It is characterized by systolic blood pressure readings of 130 mm Hg or above or diastolic blood pressure (DBP) readings of 80 mm Hg or higher. Unmanaged hypertension poses significant health risks, making the distinction between primary (or essential) hypertension and secondary hypertension crucial, as their management and implications vary.Primary HypertensionPrimary hypertension,...
Hypertension and Regulation of Blood Pressure01:18

Hypertension and Regulation of Blood Pressure

Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
Alterations in Blood Pressure01:30

Alterations in Blood Pressure

Alterations in blood pressure, such as hypertension (high blood pressure) and hypotension (low blood pressure), significantly affect human health. Understanding these conditions' classifications, causes, and symptoms is essential for effective management and treatment.
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart beats)...
Hypertension II: Pathophysiology01:29

Hypertension II: Pathophysiology

Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...
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.

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Related Experiment Videos

Pre-hypertension is a common phenomenon: national database study.

Eliezer Kitai1, Shlomo Vinker, Lea Halperin

  • 1Department of Family Medicine, Leumit Health Services, Tel Aviv, Israel.

The Israel Medical Association Journal : IMAJ
|February 6, 2007
PubMed
Summary

Prevalence of pre-hypertension is high in adults, increasing with age and affecting men more than women. Routine blood pressure checks are crucial for all age groups.

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Area of Science:

  • Cardiology
  • Public Health
  • Epidemiology

Background:

  • The Joint National Committee (7th report) defined pre-hypertension, but its population prevalence remains largely unknown.
  • Understanding pre-hypertension prevalence is critical for public health initiatives.

Purpose of the Study:

  • To determine the prevalence of pre-hypertension within a large Israeli national cohort.
  • To analyze demographic variations in pre-hypertension prevalence.

Main Methods:

  • Analysis of blood pressure data from over 426,000 adult members of Leumit Health Services in Israel.
  • Pre-hypertension defined using the Joint National Committee 7th edition (JNC-7) criteria.
  • Blood pressure recording rates examined across age and gender demographics.

Main Results:

  • Pre-hypertension was identified in 23.2% of subjects (80,625 individuals).
  • Prevalence increased significantly with age, from 13.3% in 18-25 year olds to 44.8% in 66-75 year olds.
  • Men (24.0%) had a higher prevalence than women (22.5%).

Conclusions:

  • A substantial portion of the adult population exhibits pre-hypertension, with significant age-related increases.
  • Despite lower overall blood pressure, young populations may have a high prevalence of pre-hypertension.
  • Routine blood pressure measurement and further research across all age groups are recommended.