First I need you to clear up a few things for me:
1. You said the BLS crew arrived and put the MAST on the patient. Did they inflate them right away?
2. Then you said the EMT arrived and started yelling for them to remove MAST from the patient. Was the "EMT" an ALS provider? What about the EMT that arrived with the BLS crew?
If the BLS crew inflated the pants then they should have NOT been removed in the field.
3. What state are you from?
Here in NY our protocols are for the MAST are for hypotension secondary to suspected pelvic fx and severe traumatic hypotension. They are NEVER removed in the field. (Compartment Syndrome comes into play here as well if they are left on long enough also)
In the 9 years I had been an EMT Basic and the 2 years I have been an AEMT I have never had to use the MAST. Our main hospital is pretty close to our district and even the trauma center is only 15-20 minutes away (5 minutes by chopper).
**The NY State Dept Of Health placed in their protocols recently the results of a study done on MAST. I have copied the recommendations below:
MAST (PASG) are "usually indicated, useful, and effective" (Class I evidence) for:
· None.
MAST (PASG) are "acceptable, of uncertain efficacy, [although the] weight of evidence
favors usefulness and efficacy" (Class IIa evidence) for:
· "Hypotension due to suspected pelvic fracture;
· Severe traumatic hypotension (palpable pulse, blood pressure not obtainable). *"
MAST (PASG) are "acceptable, of uncertain efficacy, may be helpful, probably not
harmful" (Class IIb evidence) for:
· "Penetrating abdominal injury;
· Lower extremity hemorrhage (otherwise uncontrolled); *
· Pelvic fracture without hypotension; *
· Spinal shock. *"
MAST (PASG) are "inappropriate, not indicated, may be harmful" (Class III evidence)
for:
· "Adjunct to CPR;
· Diaphragmatic rupture;
· Penetrating thoracic injury;
· Pulmonary edema;
· To splint fractures of the lower extremities;
· Extremity trauma;
· Abdominal evisceration;
· Acute myocardial infarction;
· Cardiac tamponade;
· Cardiogenic shock;
· Gravid uterus***
It basically states above that for a penetrating thoracic injury (such as a stab wound to the chest) that the MAST is inappropriate, not indicated, may be harmful.
The website that the information from the above study is on: http://www.health.state.ny.us/nysdoh/ems/pdf/2008-11-19_bls_protocols
In the PDF file the info is on page 123.
Hope I was helpful.
Meri