…left ventricular enlargement, right ventricular enlargement and atrial enlargement. Below follows a discussion on the principles and differences of dilatation and hypertrophy, as well as…

…1. ECG changes seen in left ventricular hypertrophy (LVH) and right ventricular hypertrophy (RVH). The electrical vector of the left ventricle is enhanced in LVH…

…trans thoracic echocardiography. Causes of right ventricular hypertrophy Lung disease (with increased pulmonary vascular resistance), congenital heart disease (transposition of the great arteries, pulmonary valve…

…1. ECG changes in left ventricular hypertrophy (LVH) and right ventricular hypertrophy (RVH). The electrical vector of the left ventricle is enhanced in LVH, which…

…seconds), provided that other causes of right axis deviation have been excluded. Causes of left axis deviation Left bundle branch block. Left ventricular hypertrophy. Inferior…

…seconds), provided that other causes of right axis deviation have been excluded. Causes of left axis deviation Left bundle branch block. Left ventricular hypertrophy. Inferior…

…with or without left ventricular hypertrophy. Among patients with NSTE ACS undergoing angiography, approximately 10% have no critical epicardial stenosis. In some of these patients…

…aortic stenosis in the presence of a narrowing of the LVOT (left ventricular outflow tract). Such narrowings are due to septal hypertrophy or subaortic membrane …

…blood into the right ventricle. Right atrial enlargement (hypertrophy) leads to stronger electrical currents and thus enhancement of the contribution of the right atrium to…

…pronounced hypertrophy of the myocardium. It may also lead to obstruction of the LVOT (Hypertrophic Obstructive Cardiomyopathy, HOCM). Dilated cardiomyopathy (Dilated Cardiomyopathy, DCM) . Arrhythmogenic Right…

…mass is, however, an important parameter in the assessment of ventricular hypertrophy and cardiomyopathy. Numerous formulas have been developed to approximate ventricular mass. Most formulas…

…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…

…to developing hypertrophy. The ventricle also dilates, which reduces the volume overload. According to the Frank Starling mechanism, stroke volume increases to handle the increase…

…sinus bradycardia (<30 beats/min or sinus pauses ≥3s) C: Increased QRS voltage (isolated QRS voltage criteria for left ventricular hypertrophy or right ventricular hypert

…RVOT. Echocardiography in pulmonic stenosis In the setting of pulmonary valve stenosis, the pressure in the right ventricle rises, which results in right ventricular hypertrophy…

…ventricular hypertrophy. It is the most prevalent cardiomyopathy worldwide, affecting 1 in 500 individuals in most societies. HCM is also the most common cause of…

…a greater lifetime burden of hypertension. Hypertension becomes more prevalent in women than men after approximately 65 years of age. Hypertension related left ventricular hypertrophy…

…particularly coronary artery disease. Hyperuricaemia and Endothelial Dysfunction Insulin resistance impairs renal tubular handling of uric acid and may contribute to hyperuricaemia. Uric acid may…

…exploring electrode is located in front of the P wave vector ( Figure 2, right hand side). This article is part of the comprehensive chapter: How…

…reduced area of the valvular orifice. Both aortic stenosis and hypertension result in increased ventricular load, which the ventricle counteracts by developing hypertrophy. Hypertrophic cardiomyopathy…

…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…

…other leads apply in the absence of left ventricular hypertrophy or left bundle branch block [8, 10]. Characteristics of ST Elevation in Acute Transmural Ischemia…

…left ventricular hypertrophy or abnormal LV filling supports the diagnosis Unlike HFpEF, objective evidence of structural or functional cardiac abnormality or raised natriuretic peptides is…

…left ventricle hypertrophic? Is left ventricular ejection fraction (LVEF) normal? A normal sized ventricle with hyperdynamic contractility suggests acute aortic regurgitation. The severity of aortic…

…cardiomyopathy or hypertrophy. Prognosis of nonspecific intraventricular conduction delay Patients with nonspecific intraventricular conduction delays are at twice as great a risk of all cause…

…contraction and relaxation. Structural and vascular consequences Common structural consequences include left ventricular hypertrophy, left atrial enlargement, and abnormalities of diastolic filling. Mitral regurgitation may…

…potassium, and resistant to suppression by sodium loading. It is the most common form of secondary hypertension. Aldosterone acts principally through the mineralocorticoid receptor (MR)…

…etiologies for axis deviations include: Causes of Right Axis Deviation: Pulmonary hypertension (primary or secondary) [9, 16] Severe pulmonary stenosis [8] Right ventricular hypertrophy [8…

…Type 2 myocardial infarction (MI) is defined as an ischaemic myocardial injury occurring in the context of a mismatch between myocardial oxygen supply and demand…

…ventricular rate (beta blockers being the mainstay of this therapy). Rate control does not affect the rhythm per se . Rhythm control, on the other hand…

…development of increased left ventricular hypertrophy and mass. Initially, myocardial abnormalities may be subclinical. Progressive dilation can subsequently impair left ventricular ejection fraction. Enlargement of…

…may occur with angiographically insignificant epicardial disease because of abnormalities in the coronary resistance vessels. Left ventricular hypertrophy also reduces coronary flow reserve: myocardial mass…

…microvascular dysfunction (CMD) is characterized invasively by reduced CFR and increased microvascular resistance, measured by the index of microcirculatory resistance (IMR), hyperaemic microvascular resistance (HMR)…

…Figure 2 shows right ventricular hypertrophy). The following rules will distinguish the two conditions in the vast majority of cases: Right ventricular hypertrophy shifts the…

…disease, cardiomyopathy, hypertrophy, LV dysfunction, or other pathology that could affect the safety or interpretation of the examination. Evaluation and Physical Examination Before stress echocardiography…

…exhibit pronounced hypertrophy, resulting in a reduction of ventricular volume and subsequently an increase in ejection fraction. Stroke volumes are generally reduced in hypertrophic cardiomyopathy…

…conduction defect. Roughly 7% of cases progress to bifascicular block (which means that the LAFB is accompanied by a right bundle branch block), while 3…

…the right ventricle and right atrium, leading to right heart hypertrophy, dilation and ultimately right heart failure. Echocardiography in mitral stenosis Echocardiographic assessment of mitral…

…not be depolarized via the Purkinje network, but rather via spread of the depolarization from the right ventricle. The abnormal ventricular depolarization will cause an…

…other hand, for the purpose of diagnosing morphological changes (e.g. myocardial ischemia, ventricular hypertrophy), the ability to do so increases as the number of…

…overcoming the resistance in the stenosis and maintaining adequate stroke volumes. Thus, ventricular hypertrophy is a compensatory mechanism, the purpose of which is to maint

…at the top. Refer to Figure 1 . Patients with left ventricular hypertrophy may instead display normalization of secondary T wave inversions (lead V5, V6, aVL…

…Freeze time per cycle Number of cycles Margin : : : : Actinic keratosis, thin 5–10 s 1 1–2 mm Actinic keratosis, hypertrophic 10–15 s 2…

Procedurer The value of the exercise test lies not in ST depression alone but in the overall picture : exercise capacity, symptoms, blood pressure response, heart…

…symptoms Tachyarrhythmias with uncontrolled ventricular rates Acquired advanced or complete heart block Hypertrophic obstructive cardiomyopathy with severe resting gradient Recent stroke or transient ischemic attack…

…bundles of myocytes that form the slow conducting isthmuses critical for re entry [6] . Non ischemic dilated cardiomyopathy (NICM), hypertrophic cardiomyopathy (HCM), and arrhythmogenic right…

…at high risk of unsightly or hypertrophic scars: the sternum, the shoulder, the jawline, the ears. Anatomically hazardous areas: the branches of the facial nerve…

…still occur after the age of 65 years. Overall penetrance in cardiomyopathy families may reach 70–90% by age 70 years. In hypertrophic cardiomyopathy (HCM)…

…does not determine the anticoagulation indication. Previous stroke or TIA. The presence of mitral stenosis, a mechanical heart valve or hypertrophic cardiomyopathy. Heart failure, hypertension…

…athletes (hypertrophic cardiomyopathy is the most common cause). Genetic mutations in ARVC At least 13 genes have been implicated in ARVC. The majority of these…

…Most of these have atherosclerotic heart disease (coronary artery disease) as the underlying cause. Other common causes are cardiomyopathy (hypertrophic or dilated), arrhythmogenic right ventricular…

…heart failure , cardiomyopathy (dilated cardiomyopathy, hypertrophic obstructive cardiomyopathy), valvular disease . Less common causes are arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/ARVD), Brugada syndrome , long QT…

…and subject preparations. We will also discuss the relevance of withholding specific cardioactive medications during exercise testing (exercise ECG). Indications for exercise stress test Indications…

…acute myocardial injury without having an infarction. The degree of troponin elevation does not by itself establish the mechanism. Increased concentrations may result from acute…