Case presentationsDifferential diagnosis of the abnormally large or wide QRS complexAbnormally large QRS complexAbnormally wide QRS complexCase conclusionsReferencesdoi:10.1002/9781444303551.ch55Theodore C. ChanRichard A. HarriganJohn Wiley & Sons, Ltd...
Fill in the blanks with the correct options: An increase in heart rate should correspond to a(n) (increase/decrease) in a R-R interval and a(n) (increase/decrease) in pulse rate. What happens to the heartbeat interval...
In normal sinus rhythm, what does the P-wave, the PR interval, QRS complex, and QT interval reflect?ECG:An ECG, or electrocardiogram, is an electrical readout of the heart which measures the electrical output of all heart chambers during cardiac cycles. Th...
A deflection of 10mm on a standard ECG paper represents a voltage of 1 mV. The standard paper moves 250mm in one second. The variation in the electric signal is shown in the form of waves. Heart rate can be calculated by counting the number of large squares between QRS on the ECG ...
Which of the following parts of an ECG represents the depolarization of the atria? a) The ST interval b) The P-wave c) The QRS-complex d) The T-wave e) The PR-interval What helps the papillary muscles hold AV valves shut while ventricles contract?
What does small P wave mean? A short P‐wave duration isa marker of a higher rate of atrial fibrillation recurrences after pulmonary vein isolation procedure. Can you have 2 P waves? In blocks with 2:1 conduction,two P waves occur for every QRS complex, indicating every other impulse is ...
Case Presentation A 16-year-old female with a long history of rapid, regular, recurrent palpitations with documentation of a tachycardia with left bundle branch block (LBBB)-like QRS complex (Fig. 1) was referred to our center for an electrophysiological study. The patient had no structural ...
Different Narrow QRS Morphologies in the Surface ECG: What is the Mechanism?doi:10.1111/j.1540-8167.2008.01429.xLUCIOHeartCAPULZINIHeartGAETANOHeartPAPARELLAHeartGIANHeartBATTISTAHeartCHIERCHIAHeartCARLOHeartDEHeartASMUNDISHeartEBSCO_AspJournal of Cardiovascular Electrophysiology...
Different Narrow QRS Morphologies in the Surface ECG: What is the Mechanism?magnetic navigationventricular tachycardiairrigated tip catheterelectrical stormimplantable cardioverter defibrillatorAuthor information: (1)Heart Rhythm Management Center, UZ Brussel-VUB, Brussels, Belgium. luciomassimo@hotmail.com...
Which of the following parts of an ECG represents the depolarization of the atria? a) The ST interval b) The P-wave c) The QRS-complex d) The T-wave e) The PR-interval The first heart sound (lub) is correlated with which ECG wave? What might be occurring if there...