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Madden, Paramedic. It should be emphasized here that this is a presentation of high-pretest probability for Acute Coronary Syndrome (ACS). An interesting comment provided by Paramedic Madden is that a few team members initially interpreted the T wave presentation as hyperkalemia, as opposed to occlusive hyperacuity.
Below is the first ECG recorded by paramedics after 2 hours of chest pain, interpreted by the machine as “possible inferior ischemia”. While STEMI negative, the ECG is diagnostic of proximal LAD occlusion. In isolation this ECG does not show OMI, but following the paramedic ECGs this indicates spontaneous LAD reperfusion.
David Didlake Firefighter / Paramedic Acute Care Nurse Practitioner @DidlakeDW Peer review provided by Dr. Steve Smith @SmithECGblog I was conducting QA/QI on two very recent cases and was struck by the uniqueness of both. A prehospital STEMI activation was transmitted to the closest PCI center, and 324mg ASA was administered.
The paramedics achieve return of spontaneous circulation (ROSC) after CPR, advanced cardiac life support (ALCS), and Intubation. Acute coronary syndrome (ACS) is responsible for the majority (60%) of all OHCAs in patients. EMS arrives and finds the patient in monomorphic ventricular tachycardic (VT) cardiac arrest.
Paramedics provided another 3 sprays of nitro, and 6mg of morphine, which reduced but did not resolve the pain. I sent this to the Queen of Hearts So the ECG is both STEMI negative and has no subtle diagnostic signs of occlusion. of such ‘high risk Non-STEMI’ patients get angiography within 2 hours.[2] But only 6.4%
Acute anterior STEMI tends to be a more difficult ECG diagnosis than acute inferior STEMI. That’s because with acute inferior STEMI there’s almost always a downsloping ST-segment in lead aVL to help shore up the diagnosis. Assuming the patient has signs and symptoms of ACS, this should be an easy diagnosis.
David Didlake Firefighter / Paramedic Acute Care Nurse Practitioner @DidlakeDW Expert commentary provided by Dr. Ken Grauer CASE 1 An 82 y/o Male called 911 for sudden onset dizziness while at rest. Anecdotally, had there been symptoms unequivocally consistent with ACS then one could justifiably make the case for a potential D1 occlusion.
This case was provided by Spencer Schwartz, an outstanding paramedic at Hennepin EMS who is on Hennepin EMS's specialized "P3" team, a team that receives extra training in advanced procedures such as RSI, thoracostomy, vasopressors, and prehospital ultrasound. Learning Points: 1. Learn to Recognize Hyperacute T-waves 2. From Gue at al.
Clinical Course The paramedic activated a “Code STEMI” alert and transported the patient nearly 50 miles to the closest tertiary medical center. 2 The astute paramedic recognized this possibility and announced a CODE STEMI. Look at the aortic outflow tract. What do you see? Answer below in the still shot.
Because the most severe LAD OMIs can cause ischemic failure of the RBB and LAF, any patient with ACS symptoms and new RBBB and LAFB with any concordant STE has LAD OMI until proven otherwise. There is no recognition of STEMI equivalency in this setting in the USA guidelines currently. Long term outcome is unavailable.
Here’s the paramedic ECG (digitized by PMcardio). STEMI negative : the EMS automated interpretation read, “STEMI negative. But the latest ACC consensus on the evaluation of chest pain in the ED warns that “STEMI criteria will miss a significant minority of patients with acute coronary occlusion.”[1] What do you think?
Serial ECGs demonstrated dynamic changes diagnostic of ACS (transient STEMI) 4. Finally, Transient STEMI should be taken emergently to the cath lab. Normalization of Diagnostic For STEMI Prehospital ECG with Nitroglycerin Therapy. During the 13 month interval, 87 patients had an initial ECG that was diagnostic for STEMI.
David Didlake Firefighter / Paramedic Acute Care Nurse Practitioner @DidlakeDW Peer review by Dr. Stephen Smith @smithECGblog I was reviewing ECG’s in our LifeNet database and happened upon this one without any knowledge of clinical circumstances. 1] Here is the admitting ED ECG after cancellation of Code STEMI. 1] Driver, B.
This was shown to me by a very astute Hennepin paramedic. Although this comes from a Hennepin paramedic, the patient was not brought to Hennepin County Medical Center. It is important for cardiologists to realize that a paramedic may see something they do not. of this post. This is my reponse. This is not tribalism.
She was found by paramedics with an oxygen saturation of 64%, but could not tolerate BiPAP during transport due to claustrophobia. Supply-demand mismatch can cause ST Elevation (Type 2 STEMI). Also see these posts of Type II STEMI. Truly, the Marquette 12 SL algorithm correctly identifies this STEMI. Management?
Here is the prehospital ECG, recorded in the presence of pain: Hyperacute anterolateral STEMI The medics had activated the cath lab and the patient went for angiogram and had a 95% stenotic LAD with TIMI-3 flow. So even a massive STEMI, if it reperfused quickly, can result in a relatvely low troponin (in contrast to the next case!)
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