Related Concept Videos
01:28Special considerations while measuring blood pressure
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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.
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01:23Assessment of blood pressure in brachial artery(two-step method)
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Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
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01:19Assessing Blood pressure using a doppler ultrasound
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To obtain accurate blood pressure measurements in clinical settings, especially when traditional methods are insufficient, healthcare professionals utilize the Doppler ultrasound technique. This method uses high-frequency sound waves to detect blood flow within the arteries, which is crucial for patients with conditions that complicate circulatory system assessment.
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
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01:29Heart Failure II: Pathophysiology
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Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
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When does the E/e' index not work? The pitfalls of oversimplifying diastolic function.
Imran Sunderji1, Vickram Singh2, Alan G Fraser2
1Department of Cardiology, Castle Hill Hospital, Hull, UK.
Echocardiography (Mount Kisco, N.Y.)
|July 2, 2020
Summary
The E/e
Area of Science:
- Cardiology
- Echocardiography
- Diastolic Function
Background:
- The E/e' ratio, a noninvasive marker for pulmonary capillary wedge pressure, is widely used but requires critical evaluation.
- Its clinical application has expanded significantly since its 1997 description.
- Technical, physiological, and pathophysiological factors can impact E/e' interpretation.
Purpose of the Study:
- To critically reappraise the clinical utility and limitations of the E/e' ratio.
- To explore factors affecting E/e' interpretation and its applicability in diverse patient groups.
- To discuss alternative methods for assessing diastolic function and filling pressures.
Main Methods:
- Review of technical factors, physiological influences, and pathophysiological processes affecting E/e'.
- Analysis of meta-analyses regarding E/e' utility in heart failure with preserved ejection fraction (HFpEF) and diastolic stress echocardiography.
- Comparison of E/e' with alternative methods for estimating cardiac filling pressures.
Main Results:
- E/e' validation is limited to specific circumstances and cannot be extrapolated to all patient populations, including critically ill patients or children.
- Meta-analyses indicate E/e' is not useful for diagnosing HFpEF or assessing diastolic function during stress echocardiography.
- Evidence for using E/e' to estimate right heart filling pressure is insufficient.
- E/e' alone can be uninformative, and alternative methods may offer greater accuracy.
Conclusions:
- The widespread clinical reliance on the E/e' ratio warrants critical reappraisal due to its limitations and lack of universal applicability.
- Alternative echocardiographic methods and continuous variable analysis may provide more accurate assessments of diastolic function and filling pressures.
- Future developments in diagnostic tools may facilitate the implementation of more comprehensive diastolic function assessments.