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Corrected Transposition of the Great Arteries with Several
Corrected Transposition of the Great Arteries with Several

... ventricle is able to maintain adequate function for a long time when playing the role of the systemic ventricle, even in the presence of associated lesions that impose significant hemodynamic load to the cavity. They suggest that other factors, such as volume overload for a long period of time and i ...
ATP-Sensitive Potassium Channel Blocker HMR 1883 Reduces
ATP-Sensitive Potassium Channel Blocker HMR 1883 Reduces

... of LVP increase (dp/dt) was derived by an analog differentiator. The LVP signal also triggered a cardiotachometer (HR). Cardiac output (CO) was measured continuously by an ultrasound flow probe placed around the pulmonary artery and connected to an active redirection transit time flowmeter (model 20 ...
Constrictive pericarditis after tuberculosis in
Constrictive pericarditis after tuberculosis in

... ventricles, followed by lack of additional filling due to compression in mid and late diastole). The black arrows point to the left ventricular pressure tracing, the yellow arrows to the right ventricular pressure tracing. (b) Discordance of ventricular systolic pressures during the respiratory cycl ...
Secundum type atrial septal defect with prolonged PR - Heart
Secundum type atrial septal defect with prolonged PR - Heart

... This report describes a family where secundum type atrial septal defect with prolonged atrioventricular conduction time occurred certainly in 6, andprobably in at least I more, members of thefamily in 3 or 4 generations. No skeletal anomalies were found. Because of a certain type of kinship in two a ...
Faculty PBL IV
Faculty PBL IV

... Tn-C a calcium binding subunit and TnI an inhibitory subunit. Each of these subunits interacts with at least one other subunit. They are released into the bloodstream with myocardial injury. They are highly specific for myocardial injury--more so than CK-MB--and help to exclude elevations of CK with ...
Not All Chest Pain is Created Equal
Not All Chest Pain is Created Equal

... itself electrically inert. Classically, four electrocardiographic stages are described in acute pericarditis. The first (the one associated with acute symptomatology) demonstrates widespread concave upward ST segment elevation with diffuse PR segment depression (elevation in aVR).2 Laboratory tests ...
Lenient versus Strict Rate Control in Patients with Atrial Fibrillation
Lenient versus Strict Rate Control in Patients with Atrial Fibrillation

... strategy of lenient rate control was as effective as (i.e., noninferior to) a strategy of strict rate control. The study size was determined on the basis of an expected rate of the primary outcome of 25% at 2.5 years in both treatment groups and a requirement that the study had 80% power to rule out ...
Analysis of vagal effects on ventricular rhythm in patients with atrial
Analysis of vagal effects on ventricular rhythm in patients with atrial

... refractoriness. The purpose of the present study was to analyse these effects in man. 2. Sixteen patients with chronic atrial fibrillation were studied. After administration of propranolol (0.2 mg/kg intravenously) baseline ventricular rhythm was recorded (500 R-R intervals). Recordings were repeate ...
through a rational characterization of left ventricular phenotypes
through a rational characterization of left ventricular phenotypes

... ‘compensated’) and ‘pathological’ (‘maladaptive’ and ‘decompensated’) have been applied to so-called ‘cardiac hypertrophy’ for many years. Thus, the physiological increase in cardiac size following endurance exercise (athlete’s heart) or during pregnancy is usually (though not unanimously) different ...
Stingray Barb Injury: A Cause of Late Coronary Occlusion and
Stingray Barb Injury: A Cause of Late Coronary Occlusion and

... the heart for 17 years, obviously not only saved this patient’s life but also saved his attacker from a murder charge. The stingray barb is a remarkable feat of bioengineering. It is stiletto thin and sharp, and its edges are lined with backward-pointing, harpoonlike, retroserrations (Fig 4A) that a ...
The QT interval: Too long, too short or just right - Tel
The QT interval: Too long, too short or just right - Tel

... reached adulthood without developing arrhythmic symptoms have been reported.4,5 Population studies also show that relatively few males and females have QTc intervals shorter than 360 and 370 ms,1–5,7 respectively, and these values probably should be regarded as “short.” A diagnosis of SQTS should be ...
Congenitally Corrected Transposition of the Great Arteries
Congenitally Corrected Transposition of the Great Arteries

... B. Ventricle failure (Refer to Problem section on Systemic Ventricular failure for further discussion and management) 1. Systemic ventricle is morphologic right ventricle 2. Atrioventricular valve regurgitation increases with RV dysfunction 3. Perfusion to RV by single coronary artery C. Increased s ...
Catheterization lab procedure lowers risk for heart patient Heart
Catheterization lab procedure lowers risk for heart patient Heart

... Ross Procedure, minimally invasive valve surgery, cardiopulmonary bypass, ambulatory thoracic surgery, hyperhidrosis and pediatric congenital heart disease. Mayte Figueroa, medical director of CVICU Figueroa is a graduate of Mount Sinai School of Medicine and completed pediatric cardiology fellowshi ...
Building a Comprehensive Nutritional Practice
Building a Comprehensive Nutritional Practice

... was like whipping a tired horse; he would be stimulated to run faster but sooner or later he collapses because you never fed him. Sometimes doctors call us for help with patients with cramps. This could be cramps anywhere in the body – the legs, abdomen, heart, etc. They will say, “I’ve tried everyt ...
PDF file - Kardiologia Polska
PDF file - Kardiologia Polska

... Background and aim: To evaluate the accuracy of the three-dimensional (3D) printing of cardiovascular structures. To explore whether utilisation of 3D printed heart replicas can improve surgical and catheter interventional planning in patients with complex congenital heart defects. Methods: Between ...
Intracardiac Lateral Tunnel Fontan by using Right Atrial Wall
Intracardiac Lateral Tunnel Fontan by using Right Atrial Wall

... pressure in the veins is high, some of the oxygenpoor blood can escape through the fenestration to relieve the pressure. However, this results in hypoxia, so the fenestration may eventually need to be closed by an interventional cardiologist.In the long term postoperative complication, children can ...
ECG-correlated imaging of the heart with subsecond
ECG-correlated imaging of the heart with subsecond

... Fig. 2. Schematic plot of 180 MCI for the central ray for arbitrary z and c . The solid lines depict the measured spirals, whereas the dashed lines depict the rebinned data obtained from opposite views. The numbers m at the top count the simultaneously measured slices m 1; 1 1 1 ; M . The figure is ...
Repair of Atrial Septal Defect via Right Submammary
Repair of Atrial Septal Defect via Right Submammary

... one case that underwent re-exploration, and the other was sick sinus syndrome requiring pacemaker implantation also in one case. The mean length of stay in ICU was 2 days and the mean length of hospital stay was 4.5 days. Post-operative echocardiography was performed systematically for each patient. ...
PowerPoint Presentation - McGraw Hill Higher Education
PowerPoint Presentation - McGraw Hill Higher Education

... • 12-lead ECG should be immediately performed on anyone even remotely suspected of experiencing MI • Because early ECGs do not always reveal MI, it is important to obtain serial 12-lead ECGs throughout patient assessment and treatment – Particularly true if first ECG is obtained during a pain-free e ...
A1984SK79800001
A1984SK79800001

... injury that followed acute coronary artery occlusion was most likely nonuniform. However, this nonuniformity of tissue injury had never been demonstrated, and thus, from a diagnostic and therapeutic standpoint, an acute myocardial infarction was perceived as being a single event that resulted in tis ...
Serum uric acid, NT-ProBNP and hs-CRP as biomarkers in chronic
Serum uric acid, NT-ProBNP and hs-CRP as biomarkers in chronic

... end-diastolic dimension (LVEDD), left ventricular end-diastolic volume index (LVEDVI), left ventricular end-systolic volume index (LVESVI), the left ventricular ejection fraction [LVEF = (LVEDVI-LVESVI)/LVEDVI × 100%], and the maximum flow rate of early diastolic and end-diastolic maximum flow rate ...
METASTATIC TUMORS OF THE HEART Metastatic tumors of the
METASTATIC TUMORS OF THE HEART Metastatic tumors of the

... cardiac metastases as follows : “In 2,161 autopsies, Chambers found 7 secondary carcinomas of the heart ; from 4,547 autopsies, Willigk reported 9 secondary carcinomas of the heart, 7 of which were in the pericardium; in 4,500 autopsies, Uskoff found 1secondary carcinoma of the heart; in about 8,500 ...
Long-term prognostic value of resting heart rate in
Long-term prognostic value of resting heart rate in

... consent and it was usually obtained before the initial index coronary angiogram. Baseline resting heart rate was obtained manually at enrolment with one radial pulse measurement during 60 s with the patient in the sitting position. The variables evaluated in CASS have been previously described in de ...
cardiology
cardiology

... inferior MI should automatically trigger one to check right- sided leads (V4R) to assess for the possibility of RV infarction, which occurs in about 50% of patients with inferior MI. May see increased JVP and clear lungs clinically. ST elevation in V4R is diagnostic and prognostic. Hypotension shoul ...
Lenient versus Strict Rate Control in Patients with Atrial Fibrillation
Lenient versus Strict Rate Control in Patients with Atrial Fibrillation

... strategy of lenient rate control was as effective as (i.e., noninferior to) a strategy of strict rate control. The study size was determined on the basis of an expected rate of the primary outcome of 25% at 2.5 years in both treatment groups and a requirement that the study had 80% power to rule out ...
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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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