John Furst

JOHN FURST is an experienced emergency medical technician and qualified first aid and CPR instructor. John is passionate about first aid and believes everyone should have the skills and confidence to take action in an emergency situation.

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  How does pulse oximetry work?

  October 7, 2015

   by John Furst · Published October 7, 2015 · Last modified October 6, 2015

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  Why Does a Heart Attack Cause Left Arm Pain?

  September 19, 2016

   by John Furst · Published September 19, 2016 · Last modified May 4, 2023

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  How to calculate a Glasgow Coma Scale (GCS) score

  February 5, 2018

   by John Furst · Published February 5, 2018