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Magnesium in the acute management of atrial fibrillation: noise or
Magnesium in the acute management of atrial fibrillation: noise or

... effect profile and adverse event rates for magnesium are comparable to placebo and control medications used in these trials. The optimal dose and duration of therapy with magnesium in this setting is not clear from the systematic review and this needs to be clarified. Ho et al. [9] recently publishe ...
Evaluation of heart function with impedance cardiography in acute
Evaluation of heart function with impedance cardiography in acute

... cardiac work (LCW) and STR. The following parameters may be obtained through calculaCorrelations between the parameters detertion: CI, SI, SVRI and left cardiac work index mined by noninvasive hemodynamic monitor (LCWI). Among these parameters, CI, LVET, STR, and blood NT-proBNP, BNP as well as cTnT ...
Atrial Ejection Force in Systemic Autoimmune Diseases
Atrial Ejection Force in Systemic Autoimmune Diseases

... Only a minor fraction (25%, n = 6; 4 females and 2 males) of SLE patients had detectable low-to-moderate levels of anticardiolipin IgG antibodies without clinical signs of an antiphospholipid syndrome (APS) or evidence for concomitant valvular lesions. ...
Metabolic remodelling of the failing heart: beneficial or detrimental?
Metabolic remodelling of the failing heart: beneficial or detrimental?

... The failing heart is characterized by alterations in energy metabolism, including mitochondrial dysfunction and a reduction in fatty acid (FA) oxidation rate, which is partially compensated by an increase in glucose utilization. Together, these changes lead to an impaired capacity to convert chemica ...
UNIVERSITY OF MALTA
UNIVERSITY OF MALTA

... Using the whole-cell patch-clamp technique under voltage-clamp, IAB (evoked by voltage steps or ramps) was found to be time-independent, outwardly rectifying and highly permeable to NO3-, with a relative permeability sequence of NO3->I->Cl-. Further studies showed that IAB was insensitive to PKA and ...
Exploration of the Cause of the Low Intensity Aortic Component of
Exploration of the Cause of the Low Intensity Aortic Component of

... If the aortic valve during diastole can be considered to vibrate analogously to a vibrating membrane, then the driving force productive of valvular vibration is the diastolic pressure gradient.13 Acoustical theory indicates the amplitude of sound generated by a vibrating source in the form of a pist ...
Clinical approach to determination of the need for prophylaxis in
Clinical approach to determination of the need for prophylaxis in

... • Physiologic, functional, or innocent heart murmurs • Previous Kawasaki disease without valvular dysfunction • Previous rheumatic fever without valvular dysfunction • Cardiac pacemakers and implanted defibrillators Prevention of Bacterial Endocarditis: Recommendations by the American Heart Associat ...
Procoralan Article-20 procedure - EMA
Procoralan Article-20 procedure - EMA

... efficacy when a tachyarrhythmia occurs (eg. ventricular or supraventricular tachycardia). Ivabradine is therefore not recommended in patients with atrial fibrillation or other cardiac arrhythmias that interfere with sinus node function. In patients treated with ivabradine the risk of developing atri ...
original article
original article

... sub-endocardium of the median valve of Rt atrium. Towards the ventricle, the substance of the node converges abruptly to a shaft of 1 cm- Bundle of His- which divides in to right and left branches. Internally, fibers of AV node intervene to form a mesh work. Fibres are slightly thicker and shorter t ...
Effect of Cardiac Resynchronization Therapy on Endothelium-Dependent Vasodilatation in the Cutaneous Microvasculature
Effect of Cardiac Resynchronization Therapy on Endothelium-Dependent Vasodilatation in the Cutaneous Microvasculature

... 6.1, General Electric-Vingmed). Echocardiographic measurements were performed by the same experienced sonographer. Microvascular measurements Microvascular function was assessed by iontophoresis of vasoactive drugs and by local heating, both in combination with laser-Doppler flowmetry. Iontophoresis ...
Pre-PMC Clinical Data 1024 Consecutive Patients
Pre-PMC Clinical Data 1024 Consecutive Patients

... ● Women with an oxygen saturation below 85% at rest. ● Patients with transposition of the great arteries and a systemic right ventricle with > moderate impairment of RV function and/or severe TR ● Fontan patients with depressed ventricular function and/or moderate to severe atrioventricular valvular ...
Understanding your child`s heart Transposition of the great arteries
Understanding your child`s heart Transposition of the great arteries

... Your child will continue to have check-ups at a specialist centre for congenital heart disease throughout their life. Up to the age of about 16, he or she will go to a centre which may be called a ‘specialist centre for children with congenital heart disease’, or a ‘specialist paediatric centre’. (P ...
Risk Stratification Post MI for Patients at Risk for Sudden Death
Risk Stratification Post MI for Patients at Risk for Sudden Death

... 2 Zishiri ET, et al. Early Risk of Mortality after Coronary Artery Revascularization in Patients with Left Ventricular Dysfunction and Potential Role of the Wearable Cardioverter Defibrillator. Circulation: Arrhythmia and Electrophysiology; 2013;6: 117-128 3 Weintraub et al. Prediction of Long-Term ...
Congenital complete absence of left pericardium
Congenital complete absence of left pericardium

... none was recorded, while in 12,000 recorded necropsies since 1921, only one was seen (D'Ath, 1969). The defect may be partial or complete. Though first described by Realdus Columbus in 1559, and thereafter noted as an unusual necropsy finding (Rusby and Sellors, 1945), it was not until 400 years lat ...
Pediatric rheumatic:issues on moving to adult care 20mins
Pediatric rheumatic:issues on moving to adult care 20mins

... because of the risk profile associated with each drug regimen.  In planned pregnancies, a careful discussion about the risks and benefits of warfarin, UFH, and LMWH will help the patient and physician involved to choose an anticoagulation strategy.  Unplanned pregnancies: stop warfarin when the pr ...
Cardiovascular function and evolution in crustacea
Cardiovascular function and evolution in crustacea

... interconnection between the dorsal and ventral arteries (Fig. 6). In most malacostracan crustaceans, admixture of oxygenated and deoxgenated haemolymph is minimized since input to the heart via the ostial valves occurs principally in areas where there is an oxygenated supply of hæmolymph to the peri ...
ECG Interpretation - American Heart Classes
ECG Interpretation - American Heart Classes

... 1/3 of way  Fibers then continuous with muscle cells of Rt and Lt ventricles ...
Formation of the Ventricles
Formation of the Ventricles

... Nkx2.5, looping is initiated, but the heart tube fails to extend properly and, consequently, the embryos die at around E9–10 from heart failure. Nkx2.5 mutants form a primordial left ventricle (Fig. 2A,B), however, the ventricular tissue fails to express the basic helix-loop-helix (bHLH) transcripti ...
Tumor Necrosis Factor and Steroid Metabolism in Chronic
Tumor Necrosis Factor and Steroid Metabolism in Chronic

... been recognized since earliest times (14), but the cause remains obscure. A variety of abnormalities of cytokines have been described (4,5) as has an increase in insulin resistance (15) and an elevation in catabolic steroids in untreated patients (16). This alteration in body metabolism suggests a p ...
Document
Document

... It was formerly believed that maintenance of AV synchrony was beneficial and was often attained at considerable cost. The largest randomized controlled trial that challenged this assumption was the AFFIRM trial[6]. 4060 patients with asymptomatic AF were randomized to rate control with nodal agents ...
Objectives - Contemporary Forums
Objectives - Contemporary Forums

... RC: Critical heart disease in infants and children, Edition 3, Saint Louis, 2008, ...
MAYO CLINIC HEALTH LETTER Palpitations Reliable Information for a Healthier Life
MAYO CLINIC HEALTH LETTER Palpitations Reliable Information for a Healthier Life

... Arrhythmias are classified by where they originate in the heart and by the speed of heart rate they cause. A fast heartbeat — meaning a resting heart rate greater than 100 beats a minute — is called tachycardia. A slow heartbeat — a resting heart rate of less than 60 beats a minute — is called brady ...
Hypertension, Left Ventricular Hypertrophy and Sudden Cardiac
Hypertension, Left Ventricular Hypertrophy and Sudden Cardiac

... thickness of the left ventricular posterior wall (LVW) or interventricular wall (IVW). LVM and LVW thickness increase with body weight, obesity,2 valvular heart disease, chronic elevations in systolic blood pressure,8 history of cardiovascular disease, male gender,14 smoking, and diabetes.23 Increas ...
Intravenous magnesium for cardiac arrhythmias: jack of all trades
Intravenous magnesium for cardiac arrhythmias: jack of all trades

... supraventricular and ventricular arrhythmias, multifocal atrial tachycardia [26], polymorphic ventricular tachycardia with a prolonged QT interval, and ventricular fibrillation from amitriptyline overdoses. Intravenous magnesium can also be considered as a second line drug in the treatment of suprav ...
View Article - International Society on Hypertension in Blacks
View Article - International Society on Hypertension in Blacks

... when compared with Caucasians.5 This propensity for hypertension is thought to be the main mechanism behind the greater diastolic dysfunction9; however studies indicate that other factors may also play a role. Sharp et al looked at 449 White and 60 Afro-Caribbean participants from a single center pa ...
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Electrocardiography



Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.
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