在健康人群中,加热的环境在初始静止过程中增加了血压下降和姿势摆动
Felipe Castro Ferreira1,2, Michelle Cristina Salabert Vaz Padilha1,2, Marco Antonio Araujo-Leite2
1Laboratory of Experimental and Applied Exercise Physiology, Department of Physiology and Pharmacology, Fluminense Federal University, Niterói, RJ, Brazil.
European journal of applied physiology
|June 27, 2024
概括
热应激会增加血压下降和姿势摆动,因为它会减少站立时的小腿肌肉活动. 这会在炎热的环境中影响心脏姿势控制.
科学领域:
- 生理学 生理学 生理学
- 环境健康 环境健康
- 生物力学 生物力学
背景情况:
- 心脏姿势控制对于在姿势变化期间保持稳定至关重要.
- 热应激可以影响心血管和神经肌肉功能.
- 了解这些影响对于温暖气候中的公共健康和安全至关重要.
研究的目的:
- 为了研究热应激对血压 (BP) 调节和静止过程中的姿势控制的影响.
- 测试热应激加剧血压下降和姿势摆动的假设.
主要方法:
- 十四名健康个体在热参考 (24°C) 和热 (38°C) 环境中进行了静止体检.
- 在从仰卧到站立的过渡期间,压力中心 (COP) 位移和小腿肌肉电肌图 (EMG) 被记录下来.
- 连续监测心跳对心跳的血压和舌下温度 (Tsl).
主要成果:
- 在热条件下,内部温度 (Tsl) 显着更高.
- 在热应激下观察到更大的血压下降和增加的姿势摆动 (COP距离).
- 热状态下,中部胃角肌的电肌图活动显著下降,而前部活动没有显著变化.
结论:
- 热应激显著损害心脏姿势控制,导致更大的血压下降和增加姿势不稳定.
- 在小腿肌肉中肌肉骨活动的减少可能导致在热应激下观察到的姿势摇摆.
- 这些发现突出了与热相关的平衡问题的潜在机制.
相关概念视频
01:28Special considerations while measuring blood pressure
716
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.
716
01:30Alterations in Blood Pressure
1.2K
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...
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...
1.2K
01:24Blood Pressure Imbalances and Circulatory Shock
767
Disorders affecting blood volume, vascular tone, or vascular function can disrupt vascular homeostasis, including conditions like hypertension, hemorrhage, and shock.
Blood Pressure: Hypertension and Hypotension
Normal blood pressure is 120/80 mm Hg. Elevated blood pressure is 120-129/under 80 mm Hg. Hypertension, warranting treatment at 130/80 mm Hg, is often asymptomatic and can lead to severe cardiovascular events, aneurysms, peripheral arterial disease, chronic renal disease, or cardiac...
Blood Pressure: Hypertension and Hypotension
Normal blood pressure is 120/80 mm Hg. Elevated blood pressure is 120-129/under 80 mm Hg. Hypertension, warranting treatment at 130/80 mm Hg, is often asymptomatic and can lead to severe cardiovascular events, aneurysms, peripheral arterial disease, chronic renal disease, or cardiac...
767
01:17Measurement of Blood Pressure
908
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...
908
01:10Pre-Procedural Guidelines for Assessing Blood Pressure
544
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...
544
01:18Disorders of the Autonomic Nervous System
618
The autonomic nervous system (ANS) is an intricate network of nerves that controls functions such as the regulation of heart rate, digestion, and blood pressure regulation. When this system malfunctions, it can lead to various disorders that affect multiple bodily functions. One common feature of many autonomic disorders is the involvement of smooth blood vessels, which play a crucial role in regulating blood flow throughout the body.
Raynaud's disease, also known as Raynaud's...
Raynaud's disease, also known as Raynaud's...
618