Tag Archives: inappropriate concordance

64 year old female CC: Trouble Breathing – Conclusion

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Lots of great comments and it was good to see the depth of discussion on the appropriate treatment and transport for this patient! This is the conclusion to 64 year old female CC: Trouble Breathing. When we left off our crew was attending to an elderly female patient in respiratory extremis. Pulmonary edema was present […]

Sgarbossa's Criteria – New Graphic

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Here is a graphic I created to help explain Sgarbossa’s criteria for identifying acute myocardial infarction (AMI) in the presence of left bundle branch block (LBBB) or paced rhythm. In a previous article I showed this graphic which was created using PowerPoint. Here is a similar graphic I created this morning by cropping actual ECGs […]

Found on the Lifenet Receiving Station

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Is there anything about this ECG (other than the poor data quality) that interests you? The patient was a 90 year old male, fall with injury. Also complaining of pain between the shoulder blades. *** UPDATE *** This ECG caught my eye because it satisfies one of Sgarbossa’s criteria for the identification of AMI in […]

Identifying STEMI in the presence of LBBB – Sgarbossa's Criteria – Part II

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In Part I, we discussed Sgarbossa’s Criteria for identifying AMI in the presence of LBBB. We also talked about the “rule of appropriate T wave discordance” for bundle branch blocks and other forms of abnormal depolarization (like ventricular rhythms or paced rhythms). You will recall that I drew a distinction between a QRS complex’s main […]

Identifying STEMI in the presence of LBBB – Sgarbossa's Criteria – Part I

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There has been a lot of discussion lately about identifying AMI in the presence of LBBB (see Dr. Bearemy’s “My Emergency Medicine Blog” here and a recent thread on the EKG Club). I’ve also been receiving a lot of emails offlist, so I think a full discussion is in order. In my recent post Who […]

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Comments
Vince DiGiulio
The 360 Degree Heart – Part II
It is standard practice in electrocardiography to label the first 90 degrees counter-clockwise from "zero" that way. When you see a patient with "left axis deviation" you'll see that their measured QRS axis is somewhere between -30 and -90 degrees. Imagine if you saw someone with a mean QRS axis at 5 degrees. Now imagine…
2014-10-21 14:00:37
Bryan
The 360 Degree Heart – Part II
I don't understand why (-)III and aVL are be labeled -60 and -30 degrees instead of 300 and 330 degrees?
2014-10-21 13:43:29
The 360 Degree Heart – Part II | EMS 12 Lead
The 360 Degree Heart – Part I
[…] first post in our “360 Degree Heart” series attempted to visualize how the different frontal plane […]
2014-10-21 12:50:56
Eric Strong
Axis Determination – Part VI
This is a great discussion of axis determination. One minor suggestion: I think it's potentially misleading to refer to an axis between 0 and -30 as "physiologic left axis deviation", since "axis devitation" implies deviation from normal, and axes between 0 and -30 are perfectly normal, (depending on age and body habitus). It may be…
2014-10-05 17:09:00
Ian
Right ventricular infarction – Part I
Can you give me a little more info on hypervagotonia? I googled around for some info but there doesn't seem to be much info and it's a term I've never heard before. Thanks!
2014-10-05 15:09:24

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