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Related Concept Videos

Assessment of blood pressure in brachial artery(two-step method)01:23

Assessment 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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Pre-Procedural Guidelines for Assessing Blood Pressure01:10

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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...
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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:
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Assessment of blood pressure in brachial artery(one-step method)01:15

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This procedural guide systematically measures blood pressure using an oscillometric digital sphygmomanometer, emphasizing accuracy, patient safety, and comfort.
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Equipments Used To Measure Blood Pressure01:30

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Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
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Dialysis01:27

Dialysis

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Renal failure occurs when the kidneys lose their ability to filter waste products from the blood effectively. It can be classified into two types: acute renal failure (ARF) and chronic renal failure (CRF).
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...
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Updated: May 30, 2025

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Handheld Dynamometry Testing During Dialysis: Intrarater and Interrater Reliability Study.

Eva Segura-Ortí1, Anna Junqué-Jiménez2, Valentin Dubuis1

  • 1Department of Physiotherapy, Universidad Cardenal Herrera-CEU, CEU Universities, Valencia, Spain.

Journal of Renal Nutrition : the Official Journal of the Council on Renal Nutrition of the National Kidney Foundation
|January 26, 2025
PubMed
Summary
This summary is machine-generated.

Handheld dynamometry for lower limb muscle strength testing in hemodialysis patients is reliable, especially for hip muscles. Normalized data enhances the accuracy of these strength assessments.

Keywords:
dialysisdynamometermuscle strengthreproducibilitysarcopenia

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Area of Science:

  • Nephrology and Rehabilitation Medicine
  • Musculoskeletal Biomechanics
  • Clinical Measurement Science

Background:

  • Hemodialysis patients often experience muscle weakness, impacting functional capacity and quality of life.
  • Accurate and reliable muscle strength assessment is crucial for monitoring disease progression and treatment effectiveness in this population.
  • Handheld dynamometry offers a portable and accessible method for muscle strength evaluation.

Purpose of the Study:

  • To determine the intrarater and interrater reliability of handheld dynamometry for assessing lower limb muscle strength in patients undergoing hemodialysis.
  • To evaluate the absolute and relative reliability of these measurements.
  • To explore the safety and feasibility of this assessment method during dialysis sessions.

Main Methods:

  • A cross-sectional study involving 56 participants undergoing hemodialysis for at least 3 months.
  • Handheld dynamometer measurements of hip and ankle muscle strength were taken on four occasions by two independent raters.
  • Intraclass correlation coefficients (ICCs) and minimal detectable change (MDC) were calculated to assess reliability. Bland-Altman plots were used to analyze agreement.

Main Results:

  • High to very high relative reliability (ICCs 0.75-0.98) was observed for lower limb muscle strength measurements.
  • Absolute reliability (MDC) for hip muscles was good, but less so for ankle muscles.
  • Interrater reliability showed wider values than intrarater reliability, with a systematic bias noted in ankle plantar flexion by one rater.

Conclusions:

  • Handheld dynamometry is a reliable and safe tool for assessing hip flexion and abduction strength in hemodialysis patients.
  • Normalized strength data demonstrated improved reliability compared to raw measurements.
  • Further refinement may be needed for ankle muscle strength assessment due to wider interrater variability.