…Primary percutaneous coronary intervention (PPCI) is preferred to fibrinolysis when the anticipated interval from STEMI diagnosis to PCI mediated reperfusion is less than 120 minutes…

…of global and regional ventricular function. Assessment of regional wall motion is an integral aspect of virtually every echocardiographic examination. Wall motion is assessed in…

…most sudden cardiac death/prolong the QT interval severe carboprost tromethamine CARBOPROST TROMETHAMINE CARBOPROST TROMETHAMINE Mixed ar less Tachycardia/Hypertension Hydroxocobalamin HYDROXOCOBALAMIN HYDROXOCOBALAMIN ACETATE NA…

…is ideally recommended for measuring the QT interval corrected for heart rate (QTc) using Bazett's formula? A: Less than 50 beats/min B: 60…

…presented in the parenthesis). Values without confidence interval are simply the 98 th percentile (i.e the upper reference limit). Age <1 day 1–3…

…and PAU for about 5%; reported proportions vary by population and region. Intramural haematoma IMH is haemorrhage within the aortic media without an identifiable communication…

…and a high probability of unstable angina (UA), and patients whose initial findings are less definitive. The defining electrocardiographic feature is the absence of persistent…

…conduction. 2. Calcium Hypercalcemia Causes of hypercalcaemia Primary hyperparathyroidism and malignancies cause 90% of all cases of hypercalcemia. Less common causes are immobilization, sarcoidosis, thyrotoxicosis…

…presented in the parenthesis). Values without confidence interval are simply the 98 th percentile (i.e the upper reference limit). Age <1 day 1–3…

…sinus rate. In the AV node, adenosine produces a transient, rate dependent prolongation of the A H interval, frequently manifesting as transient first , second , or…

…inhibition of pacing, inappropriate ICD therapy, or, less commonly, device damage. Oversensing is more likely with unipolar leads. Electrocautery is the most frequent source of…

…is 1–2 weeks after AMI, although descriptions of the syndrome include a broader interval of approximately 1–8 weeks. The pathogenesis is presumed to…

…Approximately 50% of cases exhibit biventricular cardiomyopathy, although the disease is less pronounced in the left ventricle. Rarely the condition is confined to the left…

…may affect every aspect of the ECG – from heart rhythm to QTc interval – the most prominent and reliable ECG changes occur in the ST segment…

…to give the reader firm knowledge of normal findings , normal variants (i.e less common variants of what is considered normal) and pathological variants . Thus…

…Rest Imaging : Conducted after a predefined interval to allow for radiotracer clearance or with a different radiotracer to capture myocardial blood flow under baseline conditions…

…the ECG, this is observed as a gradual prolongation of the PR interval with each successive beat until a P wave fails to conduct, resulting…

…and 7 night time values, and with a measurement interval of no more than 30 minutes throughout the 24 hours. Phenotype Office blood pressure ABPM…

…was no apparent reduction in cardiovascular death considered separately: Hazard ratio for cardiovascular death: 1.04 95% confidence interval: 0.88–1.24 The magnitude…

…changes: Shortened QT interval. Attenuated T wave amplitude. Prolonged QRS duration. AV block (AV block 1, AV Block 2, AV Block 3) Less frequent ECG…

…Calculating flow through a cylinder. Velocity Time Integral (VTI, stroke distance) The formula Q = a · v states that flow (Q) is the product of…

…axis of the heart Although often ignored, assessment of the electrical axis is an integral part of ECG interpretation. The electrical axis reflects the average…

…heart (heart axis) Although often ignored, assessment of the electrical axis is an integral part of ECG interpretation. The electrical axis reflects the average direction…

…Out As previously discussed, stroke volume is usually calculated by measuring area and VTI (velocity time integral) in the LVOT (left ventricular outflow tract). However…

…2. Aortic Valve Velocity Time Integral (AV VTI) Optimal View : Deep transgastric or transgastric aortic valve long axis (AVLAX) view. Method : Use continuous wave Doppler…

…smoking cessation, blood pressure and lipid management, and diabetes care are therefore integral rather than optional components. Psychological and social factors also influence prognosis. Major…

…blood pumped from the left ventricle into the aorta during systole. It is easily calculated by measuring VTI (Velocity Time Integral), using pulsed wave Doppler…

…patients who experienced a brief cardiac arrest. Post resuscitation care is an integral component of the chain of survival. It includes diagnosis of post cardiac…

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…

…Valve area according to the continuity equation (cm²) ≤ 1 cm² ZTime velocity integral of the tricuspid inflow (cm) 60 cm Pressure half time (T ½…

…= area MR • VTI MR RV = regurgitant volume; VTI = velocity time integral. These formulas for PISA performs best when the surface surrounding the…

…The stroke volumes are calculated using cross sectional area and VTI (Velocity Time Integral): SV RVOT = area RVOT × VTI RVOT SV PA = area…

…ventricles take to de and repolarize. Abnormalities in the QT interval can cause serious arrhythmias and sudden cardiac death. QT prolongation can precipitate torsades de…

…preventDefault(); // Get form values var hr = parseFloat($(' heart rate').val()); var qt = parseFloat($(' qt interval').val()); var rr = 60 / hr…

…of the P wave, PR interval and PR segment The P wave ECG interpretation usually starts with assessment of the P wave. The P wave…

…to as torsade de pointes . Abnormally short QTc interval is also arrhythmogenic but it is a very rare condition. Several formulas have been suggested to…

ECG Video lecture: The PR interval & PR segment This video lecture is accompanied by the detailed article The normal electrocardiogram (ECG). A brief summary of…

ECG Video lecture: Assessment of the QT interval (QTc interval) Corrected QT interval (QTc) calculator Open the calculator →

Aortic dimensions using 2D echocardiography Normal interval Normal interval, adjusted Aortic annulus 20 31 mm 12 14 mm/m2 Sinus valsalva 29 45 mm 15…

Info A comprehensive list of conditions and drugs that may prolong the QT interval, and cause torsade de pointes (TdP) and long QT syndrome (LQTS…

…PR Interval, Q wave, R wave, S wave, QRS complex, ST segment, T wave and QT interval This video is accompanied by the detailed article…

…related to QRS. PP interval is constant, but independent of RR interval, which is also constant. Atria and ventricles are depolarized separately. The ventricular rhythm…

ECG Introduction to ECG interpretation QT duration and corrected QT (QTc) duration ECG interpretation always includes an assessment of the QT interval (QT duration). The…

…75 30–72 32–79 32–85 34–88 0.05 – 0.10 PR interval 79–160 (107) 81–139 (108) 75–137 (104) 73…

…imbalance ECG Definition and Pathophysiology Acquired long QT syndrome (LQTS) is characterised by an abnormal prolongation of the QT interval on the surface electrocardiogram (ECG)…

…or a range of miscellaneous conditions. Because several mechanisms may coexist, diagnosis and classification must integrate haemodynamics with the patient’s clinical context and the…

…all pediatric patients. Sinus rhythm is defined by the following criteria: Regular rhythm with a ventricular rate within the age specific normal interval. P wave…

…Thrombosis or known stenosis in the target vessel. Coagulopathy or ongoing anticoagulation: choose a compressible vessel (the internal jugular or femoral vein), not the subclavian…

…lying down, standing up, tilting the head backwards. A symptom free interval between attacks, with possible residual unsteadiness. No hearing loss, tinnitus or neurological deficits…

…P wave precedes every QRS complex; the PR interval is constant and the P wave is positive in lead II. Causes of bradyarrhythmia: sinus bradycardia…

…9 mmol/L, and consider telemetry. The QT interval is measured in the lead in which it is longest, usually II or V5, and the…

…therefore does not need to be repeated. Age Screening interval Test : : : 23–49 years Every five years HPV, with reflex cytology if HPV positive 50…

…or aberrancy. Narrow complex tachycardia where the P waves cannot be discerned on the surface ECG and the RP interval decides between AVNRT, orthodromic AVRT…

…The confidence interval touched the null The current ERC and ESICM recommendation is continuous core temperature measurement and the active prevention of fever — defined as…

…late sodium current augmentation, the sodium channel blocker mexiletine has demonstrated efficacy in shortening the QT interval and reducing arrhythmic events, contingent upon the specific…

…late sodium current augmentation, the sodium channel blocker mexiletine has demonstrated efficacy in shortening the QT interval and reducing arrhythmic events, contingent upon the specific…

…Assess the RS interval (interval from start of the R wave to the nadir of the S wave). If any RS interval is 100 ms…

…P wave precedes every QRS complex; (3) the P wave is positive in lead II and (4) the PR interval is constant. Causes of bradycardia :…

…medial thinning, destruction of muscular and elastic tissue, fragmentation of the internal elastic lamina, and superimposed platelet and fibrin rich thrombus. Lesions preferentially occur at…

…with congenital heart disease. Initiation Strategies Because of its ability to significantly prolong the QT interval and cause torsades de pointes or provoke severe bra