(1) Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA KeywordsBradycardiaTachycardiaFibrillationFlutterReentryArrhythmia In the initial approach to an arrhythmia, three key questions must be answered. If the…
(1) Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA KeywordsNormalRateRhythmAxisIntervalsWaveformPRQRSQTST The heart is a remarkable organ, responsible for the coordinated pumping of blood through the…
(1) Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA KeywordsFirst degreeSecond degreeThird degreeAV blockWenckebachMobitz IMobitz IIEscapeDissociation There are three types of atrioventricular (AV) node block:…
(1) Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA KeywordsInfarctionIschemiaPathologicQ wavesST depressionST elevationT wave inversionReversibleReciprocal Myocardial infarction occurs when oxygen delivery to the myocardium is…
(1) Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA KeywordsBundle branchFascicleBlockTrifascicular blockAxisQRS The conduction system of the heart is shown in Fig. 5.1. Under normal…
(1) Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA KeywordsHypertrophyStrainLeft atrial abnormalityP pulmonaleP mitrale Any of the four chambers of the heart may become enlarged….
