November 22, 2013

Differentiating between SVT with aberrancy versus VT can be very difficult. It is crucial to be able to make this distinction as therapeutic decisions are anchored to this differentiation. Brugada et al prospectively analyzed 384 patients with VT and 170 patients with SVT with aberrant conduction to see if it was possible to come up with a simple criteria to help differentiate between the two with high sensitivity and specificity.

November 18, 2013

The subject of this ECG of the Week is a 47 y/o hispanic female with a past medical history of type 2 diabetes mellitus, hypertension, hyperlipidemia, and morbid obesity with a chief complaint of weakness.  Per the patient she cleans houses for a living and for the past 2 weeks she gets weak and short of breath earlier in the day while cleaning houses.  She used to be able to clean all day without issues, but for the past 2 weeks this has been getting less and less.  No chest pain, vomiting, diaphoresis, or syncope.  She has never had anything like this before.  She comes to the ER today because this is her only day off.  She has not had any symptoms today. BP 156/94  HR 68 RR 14 O2 sat 100% on RA   Temp 98.7 ECG from triage is shown...

November 11, 2013

58 year old female with chief complaint of chest pain x2hours with PMH of type 2 diabetes mellitus, Hyperlipidemia, and hypertension.    She is brought in via EMS still having active chest pain. BP: 102/88  HR: 82  RR: 24  O2 Sat on 2L: 99%  Temp 99.0 ECG obtained at arrival is shown...

November 8, 2013

68 year old hispanic female with a chief complaint of weakness/syncope.  PMH of type 2 diabetes mellitus and hypertension.  She was brought in via EMS due to the family calling 911 as she had an episode of syncope while at the dinner table.  At the time of arrival: VS: 96/48   43     18     99% on RA  98.7 ECG obtained at arrival is shown...

November 1, 2013

Recently, I have been asked by several students at my home institution (UTHSC at San Antonio) to help them understand bundle branch blocks.  This is different than some of my usual posts because it is meant to be more educational than evidence based.  So here we go.  The normal conduction system of the healthy heart is shown to the right.  If there is a delay or block in the left or right bundle, depolarization will take longer to occur. Therefore we get a widened QRS (>0.12 sec or >3 small boxes).
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