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Related Concept Videos

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation01:21

Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation

Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
Pulse Assessment Sites01:11

Pulse Assessment Sites

Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...
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Assessment of the Cardiovascular System III: Palpation

Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...
Arteries of Lower Limbs01:20

Arteries of Lower Limbs

The external iliac artery transitions out of the body cavity, entering the femoral region of the lower leg, and is renamed the femoral artery at the point where it traverses the body wall. This artery is responsible for the distribution of blood to the thigh's deep muscles and the skin's ventral and lateral regions, achieved through several minor branches and the lateral deep femoral artery, which also spawns a lateral circumflex artery. The knee area receives blood from the genicular artery,...
Assessing Blood pressure in the Leg01:11

Assessing Blood pressure in the Leg

Proper measurement of leg blood pressure is a critical skill for healthcare providers, ensuring precise and reliable readings. When performed correctly, this procedure informs patient care and enhances the efficacy of interventions. The following text outlines step-by-step guidelines to measure blood pressure in the leg, providing clarity and ease of understanding for practitioners.
Preparation:
Pre-Procedural Guidelines for Assessing Blood Pressure01:10

Pre-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.

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Related Experiment Video

Updated: Jun 23, 2026

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
07:52

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Published on: September 18, 2020

The lower-extremity Allen test.

Nicholas T Haddock1, Evan S Garfein, Pierre B Saadeh

  • 1New York University Langone Medical Center, Institute of Reconstructive Plastic Surgery, New York, New York 10016, USA.

Journal of Reconstructive Microsurgery
|April 25, 2009
PubMed
Summary
This summary is machine-generated.

The modified Allen test for lower extremities (LEAT) assesses blood flow from posterior tibial and dorsalis pedis arteries. This simple test aids in choosing surgical vessels when angiography is insufficient.

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Manual Muscle Testing: A Method of Measuring Extremity Muscle Strength Applied to Critically Ill Patients
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Published on: April 12, 2011

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Last Updated: Jun 23, 2026

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
07:52

Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability

Published on: September 18, 2020

Manual Muscle Testing: A Method of Measuring Extremity Muscle Strength Applied to Critically Ill Patients
09:44

Manual Muscle Testing: A Method of Measuring Extremity Muscle Strength Applied to Critically Ill Patients

Published on: April 12, 2011

Area of Science:

  • Vascular Surgery
  • Diagnostic Imaging
  • Lower Extremity Anatomy

Background:

  • The traditional Allen test evaluates ulnar and radial artery contributions to hand perfusion.
  • Assessing distal lower extremity perfusion is crucial for vascular reconstructive procedures.

Observation:

  • A handheld Doppler was used to assess distal lower extremity perfusion.
  • Compression of posterior tibial (PT) and dorsalis pedis (DP) arteries, with subsequent decompression, evaluated collateral flow via the peroneal artery (PA).

Findings:

  • The lower-extremity Allen test (LEAT) was developed to assess relative vascular contributions to distal lower extremity perfusion.
  • A case demonstrated angiography's failure to predict reliance on the PT, whereas LEAT guided an alternative recipient vessel selection.

Implications:

  • The LEAT is a simple, valuable tool for evaluating lower extremity vascularity.
  • LEAT serves as an effective adjunct to angiographic data in surgical planning.
  • This modified Allen test improves patient selection for vascular procedures.