Related Experiment Video
Updated: Jul 14, 2026
14:09
Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
Published on: March 21, 2013
Management of initial orthostatic hypotension: lower body muscle tensing attenuates the transient arterial blood
C T Paul Krediet1, Ingeborg K Go-Schön, Yu-Sok Kim
1Department of Internal Medicine, Academic Medical Center at the University of Amsterdam, Meibergdreef 9, 1105AZ Amsterdam, The Netherlands. C.T.Krediet@amc.uva.nl
Clinical Science (London, England : 1979)
|June 15, 2007
Summary
Lower body muscle tensing (LBMT) effectively reduces symptoms of initial orthostatic hypotension (IOH) by preventing significant blood pressure drops when standing up. This simple maneuver offers a new, advised treatment option for IOH patients experiencing daily life challenges.
Area of Science:
- Cardiovascular Physiology
- Neurology
- Clinical Medicine
Background:
- Initial orthostatic hypotension (IOH) is characterized by a significant drop in mean arterial pressure (MAP) upon standing, leading to cerebral hypoperfusion.
- Current treatment options for IOH are limited, necessitating the exploration of novel interventions.
- Understanding the physiological mechanisms behind IOH is crucial for developing effective management strategies.
Purpose of the Study:
- To investigate the efficacy of lower body muscle tensing (LBMT) in attenuating the MAP decrease associated with IOH after rising from a squatting position.
- To assess the impact of LBMT on symptoms of IOH in patients' daily lives.
- To elucidate the hemodynamic mechanisms, including changes in cardiac output (CO) and total peripheral resistance (TPR), underlying the effect of LBMT.
Main Methods:
- A study involving 13 IOH patients and 7 healthy volunteers comparing hemodynamic responses (MAP, CO, TPR) with and without LBMT after rising from squatting.
- Continuous blood pressure monitoring using Finometer and cardiac output calculation via Modelflow.
- Evaluation of perceived symptom improvement in IOH patients using LBMT in daily life via a questionnaire.
Main Results:
- LBMT significantly increased minimal MAP after standing in both IOH patients (by 19 mmHg) and healthy subjects (by 13 mmHg).
- In healthy subjects, LBMT blunted the decrease in TPR (47% vs. 60%), while no clear hemodynamic pattern was observed in patients.
- Eight out of ten IOH patients reported reduced symptoms when using LBMT during daily activities.
Conclusions:
- LBMT is a novel and effective intervention for mitigating the transient blood pressure decrease observed after standing up from a squatting position.
- IOH patients can be advised to utilize LBMT as a practical maneuver to manage their symptoms.
- Further research may explore the specific hemodynamic adaptations in IOH patients employing LBMT.
More Related Videos
Related Concept Videos
01:30Alterations 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 (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)...
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.
01:23Hypertension V: Nursing Management
The nursing management of hypertension involves accurately assessing symptoms, making a comprehensive nursing diagnosis, collaborating with patients to set goals, and implementing targeted interventions to mitigate the condition's impact and improve patient well-being.Comprehensive AssessmentThe initial step in nursing care for hypertension involves a thorough patient assessment. It includes evaluating symptoms such as headaches, dizziness, blurred vision, and previous hypertension episodes.
01:26Cardiac Catheterization IV: Nursing Management
Nursing responsibilities before cardiac catheterization include:Assess for allergies and establish baseline health status.Before cardiac catheterization, assess the patient for allergies to contrast dye. Perform a comprehensive baseline assessment, including vital signs, heart and breath sounds, and a neurovascular assessment of the extremities, noting distal pulses, skin color, and temperature. Instruct the patient to fast for 8-12 hours before the procedure. Evaluate baseline laboratory...
01:18Hypertension 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...
01:23Antihypertensive Drugs: Vasodilators
Vasodilators, primarily affecting the smooth muscles within arterial and venous walls, are commonly used for hypertension treatment. Medications such as minoxidil and hydralazine primarily target arteries and arterioles, while sodium nitroprusside acts on arterioles and venules. Minoxidil, functioning as a prodrug, is metabolized by hepatic sulfotransferase into its active form, minoxidil sulfate, after oral administration. This metabolite binds to the sulfonylurea receptor (SUR) component of...