…accompanied by a right bundle branch block), while 3% progress to third degree AV block (complete heart block). Noteworthy about left anterior fascicular block (LAFB…

Conduction defects ECG Intraventricular conduction delay (defect): constellations of bundle branch blocks and fascicular blocks (hemiblocks) This chapter discusses intraventricular conduction delays (defects), which are…

…disease (or myocardial infarction) who present with right bundle branch block typically also have a fascicular block. This condition is referred to as bifascicular block…

…deviation — left anterior fascicular block, inferior infarction, hypertrophy +90° to +180° Right axis deviation — right ventricular strain, lateral infarction, left posterior fascicular block −90° to…

…right axis deviation have been excluded. Causes of left axis deviation Left bundle branch block. Left ventricular hypertrophy. Inferior infarction. Pre excitation. Left anterior fascicular…

…right axis deviation have been excluded. Causes of left axis deviation Left bundle branch block. Left ventricular hypertrophy. Inferior infarction. Pre excitation. Left anterior fascicular…

Right ventricle and pulmonary artery Normal interval Mildly abnormal Moderately abnormal Severely abnormal RV DIMENSIONS Basal RV diameter (RVD 1), cm 2.0–2.8…

…separate catalogue of symptom patterns. The severity of right ventricular involvement should be considered when inferior infarction is accompanied by disproportionate systemic venous congestion, hypotension…

…is by definition 120 ms or longer. ECG criteria for right bundle branch block (RBBB) QRS duration ≥0,12 seconds. Leads V1 V2: The QRS…

…unless there is concomitant bundle branch block). rSR' pattern is occasionally seen in V1–V2. This resembles, but is not, right bundle branch block (RBBB)…

…behind the sternum and thus is the most anteriorly located part of the heart. The right ventricle has a complicated anatomy. In cross section (SAX…

…Likewise, the right ventricle may appear functionally and morphologically normal on echocardiography and cardiac MRI during the first two decades of life. The most common…

…m2 22 ± 6 29–33 34–39 40 22 ± 6 29–33 34–39 40 ​BSA, Body surface area; LA, left atrial; RA, right atrial.

ECG Hypertrophy and dilatation Atrial enlargement: left atrial enlargement (P mitrale) and right atrial enlargement (P pulmonale) The atria may become dilated and/or hypertrophic…

…BSA. Basal segments of the right ventricle (i.e parts on the atrial side of the tricuspid annulus) function as atrium and becomes dilated. The…

ECG Hypertrophy and dilatation Biventricular hypertrophy Simultaneous hypertrophy of the left and right ventricle is rather common. The ECG has low sensitivity with respect to…

Cardiology Introduction Since its initial description in 1992 as a syndrome of right bundle branch block, ST segment elevation, and sudden cardiac death (SCD), Brugada…

…atrium. An electrode placed in the oesophagus at the right level therefore records atrial depolarisation with an amplitude the surface ECG can never achieve, and…

…effect varies tenfold between individuals, and the only way to find the right level is to give a small dose, wait until it has worked…

…PE) is classified according to haemodynamic status, clinical severity, evidence of right ventricular (RV) dysfunction, and myocardial injury. This classification is central to determining the…

…bundle branch block (LBBB) in acute myocardial infarction (AMI): clinical implications & Sgarbossa criteria Contrary to right bundle branch block, left bundle branch block is always…

…and their relation to the ECG leads. Note that Figure 1 is a right dominant system (i.e PDA is supplied from RCA). Figure 1…

…which causes the shoulder injury known as SIRVA. Both are avoided with the right landmark and the right needle length. Indications Route Typical drugs Absorption :…

…which needle is chosen, and that the tubes go to the right place. In suspected bacterial meningitis it is the time to antibiotics that saves…

…or cardiac arrest with suspected pulmonary embolism. Urgent bedside echocardiography, looking for right ventricular strain. If CT pulmonary angiography can be performed immediately, do it…

…steroid that cross reacts in the cortisol assay, whether the samples were taken at the right times, and whether you know which decision threshold your…

…mass. Tamponade occurs when intrapericardial pressure equals or exceeds right atrial pressure. The haemodynamic consequences are progressive impairment of right and left sided filling, reduced…

…infarction (STEMI). The principal lesions are: Ventricular septal rupture (VSR), producing an acute left to right shunt. Ventricular free wall rupture, producing haemopericardium and cardiac…

…in V6 with QRS duration <120 ms) D: Profound sinus bradycardia (<30 beats/min or sinus pauses ≥3 s) Explanation: Incomplete Right Bundle Branch Block…

…and clinical characteristics in left ventricular hypertrophy (LVH) The following figure shows characteristic ECG changes in left ventricular hypertrophy (LVH) and right ventricular hypertrophy (RVH)…

…to a blockage of electrical impulse conduction through this bundle. Consequently, depolarization of the left ventricle is achieved by impulses spreading from the right ventricle…

…exists if the ECG displays a widened QRS appearance that is neither a left bundle branch block (LBBB) nor a right bundle branch block (RBBB)…

…flow via inferior vena cava to the right atrium and ventricle. The thrombus is pumped from the right ventricle through the pulmonary valve into the…

…considered a normal finding. The regurgitation results in blood flowing back from the pulmonary artery into the right ventricle during diastole. The most common cause…

…the highest oxygen demand. The right ventricle and the atria work against much lower resistances and therefore have lower oxygen demands. The wall thickness is…

…fibreoptic intubation. A difficult airway is anticipated in a stable patient — awake fibreoptic intubation or anaesthetic back up is then the right course, not RSI…

… it does not exclude Diastolic collapse of the right atrium and right ventricle The cardinal echocardiographic finding A dilated inferior vena cava without respiratory variation…

…Brugada's algorithm) If the QRS complex in V1–V2 resembles a right bundle branch block (i.e positive QRS) V1 : Monophasic R complex suggests…

…travels during systole. 3. Right Ventricular Outflow Tract (RVOT) Diameter Optimal View : Right ventricular inflow outflow (RVIO) view. Method : Under zoomed conditions, measure the RVOT…

…B In patients with inferior myocardial infarction, consider connecting V3R and V4R to detect concomitant right ventricular infarction. IIa B Routine blood sampling for serum…

…ZTime velocity integral of the tricuspid inflow (cm) 60 cm Pressure half time (T ½,ms) ≥ 190 ms Right atrium Pressure half time (T ½…

…conduction is consistently located in the posterolateral to posteromedial inferior region of the right atrium. This circuit also relies on a central area of block…

…antihypertensives, should prompt clinical suspicion [1]. Cardiac Signs and Symptoms Patients often present with symptoms of predominant right heart failure, including lower extremity edema, ascites…

…increased venous and intra abdominal pressures, impaired renal venous outflow and persistent right sided congestion may be important mechanisms. Diuretics relieve the hemodynamic consequences of…

…Ischaemic heart disease Atrial arrhythmias Pericardial disease, including constriction Right ventricular dysfunction caused by pulmonary embolism Infiltrative cardiomyopathies, particularly cardiac amyloidosis Sepsis and other hyperdynamic…

…anatomical development during infancy & childhood In adults, the left ventricle is considerably larger than the right ventricle. This is the result of ventricular adaptation to…

…leads, and narrow r waves followed by broad, deep S waves in the right precordial leads [7]. Septal q waves are usually absent [7]. Stricter…

…higher doses, vasoconstriction may occur, accompanied by decreased venous capacitance and an elevation in right atrial pressure. Levosimendan represents a distinct class of inodilator. It…

…yields a positive P wave in lead II ( Figure 2 , right hand side). The P wave is always positive in lead II during sinus rhythm…

…predominant right ventricular (RV) infarction, cardiac rupture with tamponade, and less common causes such as severe pre existing valvular disease or excessive beta blocker or…

…including anterior, inferoposterolateral or right ventricular involvement Pre existing abnormalities such as prior infarction, left bundle branch block, Wolff–Parkinson–White patterns or ventricular pacing…

…disease. If such aberration occurs at normal heart rate (<100 beats/min) it is most likely to have a right bundle branch block morphology. If…

…discussed in detail in the articles on left ventricular enlargement, right ventricular enlargement and atrial enlargement. Below follows a discussion on the principles and differences…

…of cases, the re entry circuit in atrial flutter is located in the right atrium and it typically loops around the tricuspid valve. Impulses spread…

…the atria and the ventricles (particularly the former). Even small pressure elevations on the right side can compromise venous return to the right ventricle. Therefore…

…s leads etc). Note that in some situations it is appropriate to connect additional electrodes in order to detect right ventricular infarction (leads V3R, V4R…

…within a Doppler sector. The picture on the right shows color Doppler located across the mitral valve and the left atrium. The main advantage of…

…is delivered to the myocardium via the leads, which are guided to the right atrial and ventricular myocardium via a vein (Figure 1). Figure 1…

…Hemodynamic effects of constrictive pericarditis Diastolic heart failure and right heart failure The rigid pericardium prevents all four heart chambers from dilating adequately during diastole…

…may be confused with right bundle branch block. Paper speed 50 mm/s. Type 1 Brugada syndrome reminds somewhat of right bundle branch block (RBBB)…