…the left atrial appendage (LAA). The LAA is a highly trabeculated, windsock like embryonic remnant that exhibits uniquely low flow velocities during the loss of…

…of fraction of left ventricular volume ejected per beat and of ventricular end diastolic and residual volumes. Experimental and clinical observations with a precordial dilution…

…reference to the intravenous antihypertensive drugs used in a hypertensive emergency. It summarises the mechanism of action, the onset, the duration of effect, the dosing…

…prolonged duration of effect, and significant individual variations in its effect. Drug Enalaprilat Brand names Vasotec IV ® Indications Hypertension and hypertensive emergency. Acute left…

…mitral regurgitation, ventricular dilatation, myocardial wall stress and subendocardial ischemia. Neurohormonal activation and vascular and renal abnormalities contribute to sodium and water retention. The interaction…

…The presence of mitral stenosis, a mechanical heart valve or hypertrophic cardiomyopathy. Heart failure, hypertension, diabetes and vascular disease. Age and sex category. Renal and…

…with an increased bleeding risk Renal thresholds: a DOAC is given at an eGFR 30 mL/min. At an eGFR of 15–30 mL/min…

…Causes of hypocalcemia Acute pancreatitis, pancreas surgery, alkalosis (hyperventilation), rhabdomyolysis, septicemia (sepsis), osteolytic cancer metastases, abnormal calcium absorption (gastrointestinal) and resorption (from primary urine), renal…

…transient ischemic attack or stroke, and initiation of renal replacement therapy. The study found no significant differences between the two treatment groups with respect to…

…sinus rate and P wave duration are minimally changed. The sinus rate may decrease in heart failure patients whose left ventricular performance is improved by…

…etc. ) may ultimately lead to ventricular dilation. However, the term dilated cardiomyopathy (DCM) refers to idiopathic or genetic dilation of the left ventricle . Patients with…

…with left ventricular dilation. This type of cardiomyopathy, referred to as tachycardia induced cardiomyopathy , can be caused by any tachyarrhythmia leading to prolonged periods of…

…may also lead to left ventricular dilation, which is referred to as ischemic cardiomyopathy (Dilated Cardiomyopathy). Ventricular dilation leads to dilation of the mitral annulus…

…leads to atrial hypertrophy and dilation. Atrial dilation causes a significantly increased risk of atrial fibrillation. The increase in left atrial pressure may also propagate…

…in the left ventricle and left atrium. Chronic aortic regurgitation leads to dilatation and hypertrophy of the left ventricle. Cardiac remodeling Ventricular dilatation and hypertrophy…

…venous system, resulting in dilation of vena cava inferior ( 2.1 cm). Severe tricuspid regurgitation may lead to systolic reversal in the hepatic veins. This…

…in left ventricular preload lead to a cascade of hemodynamic alterations which may culminate in cardiac arrest. Pulmonary embolism is causally related to deep vein…

…TAD on the electrocardiogram. Echocardiography in ARVC Echocardiography shows global right ventricular dilation. The left ventricle and the septum are generally spared. Regional wall motion…

…prolonged duration of effect, and significant individual variations in its effect. Drug Enalaprilat Brand names Vasotec IV ® Indications Hypertension and hypertensive emergency. Acute left…

…prolonged duration of effect, and significant individual variations in its effect. Drug Enalaprilat Brand names Vasotec IV ® Indications Hypertension and hypertensive emergency. Acute left…

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

…third vector: the ventricular free wall The vectors resulting from activation of the ventricular free walls is directed to the left and downwards ( Figure 7 )…

…a patient on digoxin treatment 1 ECG signs of left atrial enlargement 3 Left axis deviation 2 QRS duration ≥90 milliseconds 1 Prolonged R wave…

…flow across the mitral valve. The duration of diastasis is inversely related to heart rate (diastasis is shorter at higher heart rates and vice versa ).

…The duration of the P wave will exceed 120 milliseconds in lead II. Biatrial abnormality/enlargement Biatrial abnormality implies that the ECG indicates both left…

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

…the left ventricle partially or entirely outside the specialized conduction system. This slower conduction results in a prolonged QRS duration. The defining features of LBBB…

…duration exceeding 140 msec in males and 130 msec in females , along with slurring or notching of the mid QRS in at least two left…

…deviation of the electrical axis. The QRS duration is slightly prolonged but does not reach 0.12 s. Block in the anterior fascicle causes left…

…in left bundle branch block (LBBB), which explains why paced QRS complexes are similar to the QRS morphology during LBBB. Stimulation in other regions of…

…in aVL and QRS duration 0,12 s, provided that other causes of left axis deviation have been excluded. Causes of extreme axis deviation Extreme…

…in aVL and QRS duration is 0,12 s, provided that other causes of left axis deviation have been excluded. Causes of extreme axis deviation…

…VT]). The VF waveform is initially coarse ( i.e fibrillatory waves have large amplitudes) but as the duration of VF is prolonged, the amplitude gradually…

…reflection of the electrical potentials generated by the left ventricle. QRS duration QRS duration is the time duration from the start to the end of…

…complex is actually a reflection of left ventricular depolarization. QRS duration is the time interval from the onset to the end of the QRS complex…

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…

…ECGs showing left and right ventricular hypertrophy. Next chapter Biventricular Hypertrophy Related chapters Overview of Hypertrophy and Dilatation Left Ventricular Hypertrophy Atrial Hypertrophy and Dilatation …

…Catheter length: the right internal jugular vein requires the shortest catheter, while left sided and femoral insertions require longer ones — check the length in the…

…on the hand. These are as a rule left open. Facial bites can be sutured after careful debridement because of the cosmesis, often with antibiotic…

…QRS is indicative of 'Ventricular pre excitation', and QRS duration ≥140 ms is considered 'Profound nonspecific intra ventricular conduction delay', both of which are not…

…reader will notice that most of these drugs are contraindicated in patients with structural heart disease, as well as patients with reduced left ventricular function…

…and Pathophysiology Posterior myocardial infarction is myocardial necrosis involving the posterior region of the left ventricle, usually as part of an inferoposterior or posterolateral infarction…

…patients with an initial shockable rhythm, compressions and ventilation can extend the duration of the shockable rhythm by several minutes, allowing for EMS or bystanders…

…blood flow from the pulmonary vein to the left atrium is hampered. This reduces the filling of the left atrium and, accordingly, the left ventricle…

…lesions can cause acute severe regurgitation, a left to right shunt, tamponade, or sudden loss of effective cardiac output. Their recognition is essential because treatment…

…V6. The electrical axis should be −30° to 90°. Normal values and differential diagnoses Prolonged QRS duration: left bundle branch block. Right bundle branch block…

…liver, lung or vessel lies in the path of the needle. Access Puncture site Direction Comment : : : : Subxiphoid 1–2 cm below and to the left

…uterus should be manually displaced to the woman's left side (Figure 1). Additional offloading of the vena cava can be accomplished using a wedge…

…asymptomatic, NSVT serves as a critical marker of arrhythmogenic risk, particularly in the setting of ischemic heart disease or reduced left ventricular ejection fraction (LVEF)…

…Time to onset of action 5 to 10 minutes Duration of action 2 to 4 hours Delivery IV Dose Can be given as repeated intravenous…

…coronary artery disease (CAD). It combines echocardiographic assessment of left ventricular (LV) structure and function with exercise or pharmacological stress. The physiological basis is an…

…delay is defined as “a QRS duration greater than 110 ms in adults, greater than 90 ms in children 8 to 16 years of age…

…uncomplicated acute coronary syndrome when LVEF is 40% is not definitive. Observational studies have yielded conflicting results, and the appropriate duration of therapy in p

…can precipitate ventricular fibrillation, and cardioversion of fibrillation of unknown duration without anticoagulation can cause a stroke hours to weeks later. Everything else in the…

…of right bundle branch block (RBBB) Under normal conditions, both ventricles depolarize simultaneously. However, the QRS morphology is dominated by electrical vectors from the left…

…vasoconstriction of one or more coronary arteries. Epicardial spasm produces a reversible functional occlusion and usually causes transmural ischaemia. The resulting abnormalities in left ventricular…

…reflow cycle repeatedly to the circumflex artery before a 60 minute occlusion of the left anterior descending coronary artery (LAD) would reduce the infarct size…

…Common structural consequences include left ventricular hypertrophy, left atrial enlargement, and abnormalities of diastolic filling. Mitral regurgitation may develop through papillary muscle displacement, annular dilatation…

…left ventricular systolic function is depressed or preserved Whether hypotension is present Whether an accessory pathway is suspected, particularly before administration of digoxin The duration…

…refer to Approach to Patients with Chest Pain). As in patients with STEMI, those with NSTEMI and unstable angina are at considerable risk of developing…