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Variable Pr Interval On An Ecg - Articles

Prolonged PR Interval on EKG Warns of Atrial Fibrillation Risk, Pacemaker, or Death by Mellanie H. Patient Expert Posted Thu 25 Jun 2009 12:39pm A new study published in the Journal of the American Medical Association finds a potential warning sign for three heart rhythm issues—the risk of atrial fibrillation, the need for a pacemaker, and the risk of death. When EKGs show a prolonged PR interval, that is traditionally considered relatively benign, but that may not be the case. Increas ... Read on »
FDA Drug Safety Communication: Abnormal heart rhythms associated with use of Anzemet (dolasetron mesylate) by FDA Posted Fri 17 Dec 2010 11:19am     Data Summary Safety Announcement [12-17-2010] The U.S. Food and Drug Administration (FDA) is informing patients and healthcare professionals that the injection form of Anzemet (dolasetron mesylate) should no longer be used to prevent nausea and vomiting associated with cancer chemotherapy (CINV ... Read on »
How will you differentiate a wenkebach’s Mobitz type 1 AV block from type 2 second degree AV block if the conduction ratio is 2: by Dr. Sangareddi V. Medical Doctor Posted Wed 11 Nov 2009 10:01pm It is the classical description of wenkebach AV block type 1 there is progressive prolongation of PR interval followed by a blocked p wave and hence a dropped qrs complex. The usual conduction ratio for wenkebach AV block is 3:2 or 4:3 . It is well known wenkebach AV block is usually a benign form of AV conduction defect and it recovers sp ... Read on »
What is a cannon sound and what is a cannon wave ? by Dr. Sangareddi V. Medical Doctor Posted Sun 21 Feb 2010 8:54am Cannon Sound A loud first heart sound (S 1)   which is  heard intermittently in patients with complete heart block (CHB)  is  often referred to as  cannon sound . What is the mechanism of loud S1 in CHB ? We know , the intensity of S 1 is  mainly determined by the  relative position of mitral leaflet (To be precise, the  anterior ... Read on »
Heart rate of 230 beats per minute by Stephen Smith Posted Tue 29 Jan 2013 10:22am Answer below  The QRS is very narrow (about 70 ms?), so it must be a pediatric ECG.  Thus, the fact that the rate is 230 bpm does not necessarily mean that it is SVT because infants can have very fast sinus rhythm.  Thus, what appear to be p-waves are indeed p-waves (see leads II and V1).  This is f ... Read on »
Weakness, prolonged PR interval, wide complex, ventricular tachycardia by Stephen Smith Posted Thu 10 Feb 2011 3:24am This 58 year old patient with a PMH of CAD  only (MI, 2 stents) presented awake with weakness and non-palpable pulses and no obtainable blood pressure.  By ED ultrasound, he had good cardiac contractility.  He was volume depleted [by ED ultrasound of Inferior Vena Cava].  He had spider angiomas and abdominal free fluid [by FAST exam].  He was a ... Read on »
An 8 year old with diarrhea, abdominal pain, and syncope by Stephen Smith Posted Tue 20 May 2014 7:45pm This case was sent by: Maria Perez Emergency Registrar Monash Medical Centre Melbourne She obtained permission from the family to identify the location or origin of the case. Case This previously completely healthy 8 yo girl complained of diarrhea, vomiting, and upper abdominal pain radiating to the chest, for the pas ... Read on »
Thank goodness Baby Bun has put on some weight! by Sara G. Patient Expert Posted Sat 23 Aug 2008 10:32pm Because Momma has, too! We had another 2-week appointment on Tuesday, and all went well in Bunland . The amniotic fluid is looking good, the PR interval (heart monitoring) looks great, and Bun is measuring and weighing in at the 48 th percentile, which is just right. Bun weighs approximately 1 pound 12 ... Read on »
The ECG: QT Interval Abnormalities and Sudden Death in Dialysis Patients by Matt S. Posted Wed 26 Jan 2011 2:17pm Sometimes overlooked, QT interval abnormalities, namely prolongation and dispersion, are important predictors of sudden death to watch out for in the dialysis unit. Of these two, prolongation of the QT interval is the better studied. The QT interval is a measure of the duration of ventricular de- and re-polarization. Early after-depolarizations, ... Read on »
The Electrocardiogram - Part VI by Adam THOMPSON Posted Sun 04 Oct 2009 11:13pm The Systematic Approach I strongly believe that it is important to look at every ECG the same way. If you have a methodical way of interpreting ECGs you will miss very little. You can do this in any manor you would like as long as it is the same each time. I am going to go over it in the way in which I look at ECGs. ... Read on »