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Sinus rhythm

jer5150's picture

Jason's Blog: ECG Challenge for the months of July and August, 2014.

This is an ECG I performed a couple of years ago on an asymptomatic 83-year old man as an outpatient procedure. 

The computer interpreted this as:  "Marked sinus bradycardia [with] Frequent Premature ventricular complexes".  IS THE COMPUTER CORRECT?  Is there more than one plausible interpretation?  What is the differential diagnosis?

jer5150's picture

Jason's Blog: ECG Challenge for the month of June, 2014.

This is an ECG I performed on a 65-year old man about 5 years ago.  He mentioned something to me about his past medical history before we got started but, in truth, I would have recognized it had he not told me beforehand.  What did he tell me and what does this ECG reveal? 

jer5150's picture

Jason's Blog: ECG Challenge for the month of December, 2013.

The only patient data I have is that this ECG is from a 73-year old man.  At the request of the site administrator (Dawn Altman), I'm posting this ECG because there isn't one quite like it in the Guru's archives.  Some readers will recognize it as one I recently posted on another website.  This one lives up to the title of "Challenging".  I'll make the same general statement I did on the other website:  You'll need to make careful measurements with calipers on this ECG to come to the correct interpretation.

ECG BASICS: Sinus Tachycardia in a Toddler

Wed, 05/01/2013 - 17:24 -- Dawn

Here is a nice example of sinus tachycardia taken from a 2-year-old in the post-anesthesia care unit after a short GI endoscopic procedure.  Would you call this NSR, since it is from a child?  The pre-op heart rate in this child was 120/min.

For your more advanced students, remind them that, in adults especially, a heart rate close to 150/min. should cause them to examine the ECG in several leads, looking for the presence of atrial flutter with 2:1 conduction.  Another important teaching point, most ADULTS with sinus tach at 150/min. would  manifest an obvious reason for the rapid heart rate (dehydration, pain, anxiety, shock, etc.)  Challenge your basic students to come up with as many causes for sinus tach as they can.

jer5150's picture

Jason's Blog: ECG Challenge of the Week for March 10th - 17th. Mutual mimics

These are two 12-lead ECGs that I performed on two completely different patients several years apart. 

Patient's clinical data (Top ECG):
57-year-old black man

Patient's clinical data (Bottom ECG):
67-year-old black man

Are both of these ECGs showing the same rhythmic pattern?

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