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A CAT tourniquet, Nonin Pulse Ox, and Doppler displayed on a table
12 February

Head to head: Doppler vs. Pulse oximeter as a training tool for tourniquet efficacy. Doppler wins.

  • Posted byMike Shertz
  • Categories(M) Massive Hemorrhage
  • Comments0 comment

BLUF:* Is there a role for using a fingertip pulse oximeter as a training tool for tourniquet placement? We believe the answer is no. Considering the relative expense of a quality, FDA approved model pulse ox, a handheld doppler ultrasound is better, …

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Nonin 9550 Pulse Oximeter
12 February

Powerful TECC/TCCC uses for a fingertip pulse oximeter

  • Posted byMike Shertz
  • Categories(C) Circulation
  • Comments0 comment

BLUF*: For the pulse oximeter’s O2 saturation reading to be valid, the device must also be consistently identifying the patient’s pulse. If the pulse waveform or notation isn’t steady, the oxygen reading isn’t valid. Fingertip oxygen saturation monitors are small, …

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25 January

Always Learning: Basic Wild Hedgehog First Aid

  • Posted byMike Shertz
  • CategoriesMore
  • Comments0 comment

As a professional instructor, it is important to keep learning and improving your knowledge base. As an SF soldier, having some familiarity with any topic is beneficial because you never know what will come in handy in an Unconventional Warfare …

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21 January

Best Practices: Tourniquets & Closed Femur Fractures?

  • Posted byMike Shertz
  • Categories(M) Massive Hemorrhage
  • Comments0 comment

BLUF:* Isolated closed femur fractures are extremely rare, the internal thigh bleeding can be substantial, but tourniquet application in these closed injuries is not likely to help. A closed femur fracture can bleed l to 1.5 liters into the thigh musculature. …

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15 January

Deputy receives Lifesaver Award one month after online training and credits Crisis Medicine

  • Posted byMike Shertz
  • Categories(M) Massive Hemorrhage, (R) Respiration
  • Comments0 comment

When Deputy Just responded to a call regarding gunfire, she didn’t know there was a victim until she heard the 911 operator giving care instructions to bystanders. She arrived near-simultaneously with four other officers. As they provided security, she began …

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Heart rate divided by Systolic BP = Shock index
15 December

Shock Index: a more sophisticated determinant of hypovolemic shock

  • Posted byMike Shertz
  • Categories(C) Circulation, MARCH
  • Comments0 comment

Although not as convenient as evaluating the “Go / No Go” presence of a casualty’s radial pulse, their “shock index” is a much more sophisticated snapshot of their hypovolemic status. Shock index is a ratio of the trauma patient’s heart …

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