Wednesday, April 16, 2014


Trying to diagnosis a patient suffering from a PE, is not always easiest. Yes, we can always look for the signs/symptoms, such as sudden onset DIB, history of clot, trouble breathing, chest pain, etc. But, what about if we look at the 12-lead. They always say, that we should never rely just on our monitor to tell us about out patient, but, if you following S1Q3T3, it is a very helpful source when trying to diagnosis your patient.

S1Q3T3? What is this? When looking at your 12-lead ECG, try to identify the following: S-waves in lead I, Q-waves in lead III, and an inverted T-wave in lead III. You may also note inverted T-waves in V1, V2, V3.

What the S1Q2T3 is showing, is that the right side of the heart, is suffering from heart strain, also known as, right-sided heart failure (col pulmonale).

As always, this sign will NOT always be present. Never rule out a PE, because a 12-lead doesn't show the S1Q3T3. Remember, treat your patient, not the monitor - monitor is a tool. Follow local protocol.

Click on any picture below, to enlarge it
(pictures provided by:

1 comment: