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ECG Blog #425 — Are there P Waves?

Ken Grauer, MD

NOTE: For more on ECG recognition of RVH and/or pulmonary hypertension ( re the qR pattern in lead V1 ) — See ECG Blog #234 and Blog #248. This could have been an optimal time to try a Lewis Lead — which sometimes reveals atrial activity not evident with standard lead placement ( See ECG Blog #223 ).

Blog 112
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ECG Blog #419 — The Cause of ECG #1?

Ken Grauer, MD

PEARL # 2: As described in ECG Blog #394 — QRS widening in the presence of sinus rhythm, in which QRS morphology is consistent with RBBB conduction in the chest leads — but LBBB conduction in the limb leads ( especially with a leftward axis ) — suggests the entity known as MBBB ( M asquerading B undle B ranch B lock ).

Blog 170
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ECG Blog #409 — Every-Other-Beat.

Ken Grauer, MD

By the P s, Q s, 3 R Approach ( See ECG Blog #185 ): The rhythm is fast and QRS complexes are R egular. PEARL # 4: As emphasized in ECG Blog #204 , in which I review derivation of the bundle branch blocks — RBBB is a terminal conduction delay. ECG Blog #185 — Reviews the P s, Q s, 3 R Approach to Rhythm Interpretation.

Blog 164
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ECG Blog #406 — To Do Additional Leads?

Ken Grauer, MD

For full discussion of this case — See ECG Blog #351 — == The ECG in Figure-1 — was obtained from a previously healthy older man who contacted EMS ( E mergency M edical S ervices ) because of "chest tightness" that began ~1 hour earlier. ECG Blog #205 = The Systematic Approach I favor. Below are slides used in my video presentation.

Blog 131
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ECG Blog #415 — The Cath showed NO Occlusion!

Ken Grauer, MD

As discussed in detail in ECG Blog #228 — this seemingly qualifies as a “ Silent ” MI ( Approximately half of those MIs not accompanied by CP — have some other associated symptom such as syncope, which substitutes as a “chest pain equivalent” ). ECG Blog #218 — Reviews HOW to define a T wave as being H yperacute ? What is T-QRS-D?

Blog 141
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ECG Video Blog #403 (220) — Ps,Qs,3Rs Approach to this Tachycardia.

Ken Grauer, MD

For full discussion of this case — See ECG Blog #220 — == The long lead II rhythm strip shown in Figure-1 was obtained from an 51-year-old man who presented to the ED ( Emergency Department ) with "palpitations" that began 1 hour earlier. Figure: Use of the "3 Simple Rules" for distinction between SVT vs VT ( taken from ECG Blog #196 ).

Blog 164
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ECG Video Blog #408 (392) — 20 Minutes Later.

Ken Grauer, MD

For full discussion of this case — See ECG Blog #392 — == The ECG in Figure-1 was obtained from a man in his 60s — who described the sudden onset of "chest tightness" that began 20 minutes earlier, but who now ( at the time this ECG was recorded ) — was no longer having symptoms. ECG Blog #387 — Dynamic change in 2 minutes.

Blog 115