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局所脈圧,平均血圧,大動脈の改造との関連
P Boutouyrie1, C Bussy, P Lacolley
1Departments of Pharmacology, Broussais Hospital, and INSERM U337, Paris, France.
Circulation
|September 29, 1999
まとめ
局所的な脈圧は,大動脈の再形成に大きく影響し,大動脈の膨張と厚みを引き起こします. この効果は放射動脈では観察されず,脈動性機械的負荷に対するサイト特有の反応を強調した.
科学分野:
- 心血管生理学 心血管の生理学
- 動脈のバイオメカニクス
- 高血圧の研究 高血圧の研究
背景:
- 動脈の改造は,血動力学的力によって影響を受けます.
- 局所脈圧と平均血圧の役割を理解することは極めて重要です.
- 弾性動脈と筋肉動脈の動脈改造の違いは完全に理解されていません.
研究 の 目的:
- 動脈の再構築における局所脈圧と平均血圧の独立した効果を調査する.
- これらの効果を中央の弾性動脈 (常軌動脈) と外周の筋肉動脈 (放射動脈) で比較する.
主な方法:
- 非侵襲的な高解像度エコートラッキングで,インティマメディアの厚さや内径を測定します.
- 局所脈圧測定のためのアプラネーショントノメトリー.
- 健康な被験者と高血圧患者の多変量回帰分析.
主要な成果:
- 頸動脈動脈の直径と壁の厚さは,頸動脈脈圧 (P<0.0001) によって著しく決定されました.
- 平均血圧と腕脈圧は, carotid remodeling に独立して影響を与えない.
- 放射線動脈の直径は年齢と相関し,インティマ・メディアの厚さは,放射線脈圧ではなく,平均血圧 (P<0.001) と相関する.
結論:
- 局所脈圧は,常軌動脈動脈のような弾性動脈における動脈の再構築の重要な決定因子である.
- 筋肉動脈 (放射動脈) の動脈再構成は,主に平均血圧によって異なる影響を受けます.
- 周期的なストレッチは,弾性動脈の脈圧誘発の改造に寄与する可能性があります.
関連する概念動画
01:30Blood 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...
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...
01:21Sites 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
The Brachial Artery: Primary Site for Blood Pressure Measurement
01:28Special considerations while measuring blood pressure
When assessing blood pressure (BP), healthcare professionals must consider various factors and potential unexpected outcomes to ensure accurate readings and provide proper patient care. Adhering to these guidelines is essential to achieving the most reliable results.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
01:10Pre-Procedural Guidelines for Assessing Blood Pressure
Accurate blood pressure assessment is crucial for diagnosing and managing various health conditions. To ensure the reliability of these measurements, healthcare professionals must adhere to standardized pre-procedural guidelines. These guidelines enhance patient safety and improve the overall quality of healthcare. The following steps are essential for obtaining accurate and consistent blood pressure readings, from using the appropriate tools to ensuring effective communication with the patient.
01:24Blood 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...
01:17Measurement 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.