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Related Experiment Videos

Assessing collateral circulation in the hand--four methods compared.

R J Glavin1, H M Jones

  • 1Division of Anaesthesia, Royal Infirmary, Glasgow.

Anaesthesia
|July 1, 1989
PubMed
Summary
This summary is machine-generated.

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Doppler ultrasound did not correlate with pulse monitors or oximeters for assessing hand collateral circulation. These methods are unreliable for evaluating blood flow in unconscious patients.

Area of Science:

  • Vascular Surgery
  • Medical Devices
  • Diagnostic Techniques

Background:

  • Assessing collateral circulation in the hand is crucial for preventing ischemic complications during vascular procedures.
  • Non-invasive methods are desirable for evaluating hand collateral flow, especially in patients unable to cooperate.

Purpose of the Study:

  • To compare the reliability of Doppler ultrasound, pulse monitoring, and pulse oximetry in assessing collateral circulation of the hand.
  • To determine if these non-invasive methods can accurately evaluate collateral blood flow in unconscious patients.

Main Methods:

  • Four distinct methods for assessing hand collateral circulation were evaluated.
  • Comparison involved Doppler ultrasound, a pulse monitor, and the Ohmeda Biox 3700 pulse oximeter.

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Main Results:

  • No significant correlation was found between the Doppler ultrasound method and the pulse monitor or pulse oximeter.
  • The study failed to demonstrate a reliable connection between the tested devices and actual collateral flow adequacy.

Conclusions:

  • Current non-invasive methods, including Doppler ultrasound, pulse monitoring, and pulse oximetry, show poor correlation for assessing hand collateral circulation.
  • The utility of these devices for evaluating collateral flow in unconscious patients remains unconfirmed and potentially unreliable.