Slide 11.2a - domenicoscience
... – P wave: impulse across atria – QRS complex: spread of impulse down septum, around ventricles in Purkinje fibers – T wave: end of electrical activity in ventricles – See pg700 - 701 ...
... – P wave: impulse across atria – QRS complex: spread of impulse down septum, around ventricles in Purkinje fibers – T wave: end of electrical activity in ventricles – See pg700 - 701 ...
Do Bolus Thrombolytics Carry a Higher Risk of Intracranial
... failure after infarct because the balance between the cell-death processes (both apoptosis and necrosis) and regeneration favors cell death in endstage failure We don't know the timing: how long does it take a cell to die by necrosis, to die by apoptosis, or to regenerate? ...
... failure after infarct because the balance between the cell-death processes (both apoptosis and necrosis) and regeneration favors cell death in endstage failure We don't know the timing: how long does it take a cell to die by necrosis, to die by apoptosis, or to regenerate? ...
st-elevation myocardial infarction following thrombolysis for acute
... Institute of Health stroke scale) score improving from 10 to 7. On the third day post stroke thrombolysis, she suddenly developed severe central chest pain. ECG showed significant ST elevation in anterior and inferior leads (figure 2). Whilst being assessed for chest pain, the patient arrested with ...
... Institute of Health stroke scale) score improving from 10 to 7. On the third day post stroke thrombolysis, she suddenly developed severe central chest pain. ECG showed significant ST elevation in anterior and inferior leads (figure 2). Whilst being assessed for chest pain, the patient arrested with ...
Dysfunction: systolic vs. diastolic
... • Called Heart failure with normal EF (HFnlEF) • Diastolic dysfunction can occur along with systolic dysfunction ...
... • Called Heart failure with normal EF (HFnlEF) • Diastolic dysfunction can occur along with systolic dysfunction ...
Post thrombolytic ST segment resolution predict better outcome in MI
... Acute myocardial infarction (AMI) is the medical term for an event commonly known as a heart attack. An MI occurs when blood stops flowing properly to a part of the heart, and the heart muscle is injured because it is not receiving enough oxygen. Usually this is because one of the coronary arteries ...
... Acute myocardial infarction (AMI) is the medical term for an event commonly known as a heart attack. An MI occurs when blood stops flowing properly to a part of the heart, and the heart muscle is injured because it is not receiving enough oxygen. Usually this is because one of the coronary arteries ...
Dysfunction: systolic vs. diastolic
... • Called Heart failure with normal EF (HFnlEF) • Diastolic dysfunction can occur along with systolic dysfunction ...
... • Called Heart failure with normal EF (HFnlEF) • Diastolic dysfunction can occur along with systolic dysfunction ...
HEART RATE,HAEMATOLOGICAL AND BIOCHEMICAL
... horses. The rate of decrease of heart rate following exercise and the time required to reach resting levels depends upon the severity of the exercise even in fit horses. Heart rate falls rapidly over the first minute and then more slowly over the ensuing 10 to 15 minutes period. In this study the me ...
... horses. The rate of decrease of heart rate following exercise and the time required to reach resting levels depends upon the severity of the exercise even in fit horses. Heart rate falls rapidly over the first minute and then more slowly over the ensuing 10 to 15 minutes period. In this study the me ...
Too Fast: A Simplified Approach to Cardiac Tachydysrthmias
... MAT: Multi-Focal Atrial Tachycardia Herbert, M, MD; “A Simplified Approach to Arrhythmia Therapy,” EM-RAP: Emergency Medicine Reviews and Perspectives, September 2008. ...
... MAT: Multi-Focal Atrial Tachycardia Herbert, M, MD; “A Simplified Approach to Arrhythmia Therapy,” EM-RAP: Emergency Medicine Reviews and Perspectives, September 2008. ...
Criteria for the electrocardiographic diagnosis of myocardial
... In an experimental study seventy dogs Viera used. The heart was exposed, the right or left branch of the bundle of His was cut and the anter).or descending coronary artery was ligated in its midportion. ...
... In an experimental study seventy dogs Viera used. The heart was exposed, the right or left branch of the bundle of His was cut and the anter).or descending coronary artery was ligated in its midportion. ...
Rapid Communications - Circulation Research
... wave (atrial depolarization), the PR interval (atrioventricular conduction), QRS wave (ventricular depolarization), and the biphasic T wave (ventricular repolarization), respectively. A, The cycle length (RR) on the upper trace is 147 ms, with a PR at 37 ms and QT at 78 ms. On the lower trace, the i ...
... wave (atrial depolarization), the PR interval (atrioventricular conduction), QRS wave (ventricular depolarization), and the biphasic T wave (ventricular repolarization), respectively. A, The cycle length (RR) on the upper trace is 147 ms, with a PR at 37 ms and QT at 78 ms. On the lower trace, the i ...
Etiology of Sudden Death in Sports
... detailed post-mortem evaluation, including histological analysis by an expert cardiac pathologist. Clinical information was obtained from referring coroners. RESULTS Sudden arrhythmic death syndrome (SADS) was the most prevalent cause of death (n ¼ 149 [42%]). Myocardial disease was detected in 40% ...
... detailed post-mortem evaluation, including histological analysis by an expert cardiac pathologist. Clinical information was obtained from referring coroners. RESULTS Sudden arrhythmic death syndrome (SADS) was the most prevalent cause of death (n ¼ 149 [42%]). Myocardial disease was detected in 40% ...
Heart Metastasis of Extraskeletal Myxoid Chondrosarcoma
... carcinoma, and lymphoma are the most common primary tumors that produce cardiac metastases. It is extremely rare for a soft-tissue mesenchymal tumor of low malignant potential, such as myxoid chondrosarcoma, to give isolated heart metastases (7). It is even more unusual to have a solitary metastasis ...
... carcinoma, and lymphoma are the most common primary tumors that produce cardiac metastases. It is extremely rare for a soft-tissue mesenchymal tumor of low malignant potential, such as myxoid chondrosarcoma, to give isolated heart metastases (7). It is even more unusual to have a solitary metastasis ...
View PDF - CiteSeerX
... The PR pulse sequence used in this work is an extension of the technique originally developed for pulmonary microscopy applications (24,25), adapted for timeresolved cardiac imaging. Data acquisition of the FID was initiated immediately after slice-selective excitation to acquire the k-space origin ...
... The PR pulse sequence used in this work is an extension of the technique originally developed for pulmonary microscopy applications (24,25), adapted for timeresolved cardiac imaging. Data acquisition of the FID was initiated immediately after slice-selective excitation to acquire the k-space origin ...
Acute Myocardial Infarction with Simultaneous Involvement of Right
... thrombus aspiration and stenting in both the RCA and LAD. Because the added complication of cardiogenic shock is common in these high risk patients further mechanical support with IABP or even an extracorporeal membrane oxygenation device may be necessary. Several factors, such as old age, poor left ...
... thrombus aspiration and stenting in both the RCA and LAD. Because the added complication of cardiogenic shock is common in these high risk patients further mechanical support with IABP or even an extracorporeal membrane oxygenation device may be necessary. Several factors, such as old age, poor left ...
Global Bi-ventricular endocardial distribution of activation rate
... recorded for 20 s as a short-duration (SDVF) episode before being halted by a 400–600 V biphasic shock (6/ 4 ms) delivered from a defibrillator electrode. The last VF episode was allowed to continue for at least 3 min (long-duration VF, LDVF), and the animal was not resuscitated. The first 20 s of V ...
... recorded for 20 s as a short-duration (SDVF) episode before being halted by a 400–600 V biphasic shock (6/ 4 ms) delivered from a defibrillator electrode. The last VF episode was allowed to continue for at least 3 min (long-duration VF, LDVF), and the animal was not resuscitated. The first 20 s of V ...
Heart rate variability before and after myocardial infarction in
... a defibrillator (LifePack 3, Physio-Control), allowing direct current defibrillation within 20 s of ventricular fibrillation after the dog had lost consciousness. Dogs that did not develop ventricular fibrillation were considered to be at low risk and were defined as resistant to sudden cardiac deat ...
... a defibrillator (LifePack 3, Physio-Control), allowing direct current defibrillation within 20 s of ventricular fibrillation after the dog had lost consciousness. Dogs that did not develop ventricular fibrillation were considered to be at low risk and were defined as resistant to sudden cardiac deat ...
Imaging Pediatric Cardiomyopathies and Myocarditis
... • Clinical presentation – CP, ischemic pattern on ECG, elevated serum troponin • Major dif dx – acute coronary syndrome • Difficult diagnosis in the past – – Low sensitivity of detection – Endomyocardial biopsies positive 30% – Focal not diffuse myocardial involvement at presentation ...
... • Clinical presentation – CP, ischemic pattern on ECG, elevated serum troponin • Major dif dx – acute coronary syndrome • Difficult diagnosis in the past – – Low sensitivity of detection – Endomyocardial biopsies positive 30% – Focal not diffuse myocardial involvement at presentation ...
Echocardiographic Determination of Contraction and
... alinear process, and most thinning occurred in the first 40% of diastole. The major finding of this investigation was that the left ventricular wall of boys with DMD thinned at a slower rate than that of normal subjects. This new technique appears to be sensitive and demonstrates subtle changes in t ...
... alinear process, and most thinning occurred in the first 40% of diastole. The major finding of this investigation was that the left ventricular wall of boys with DMD thinned at a slower rate than that of normal subjects. This new technique appears to be sensitive and demonstrates subtle changes in t ...
Noncontact mapping using the Endocardial Solutions
... fatigue, or other symptoms. Fast heartbeats cause the blood to pump inefficiently. There are two types of fast heartbeats: focal arrhythmias and reentrant arrhythmias. In focal arrhythmia (such as focal tachycardia), a site other than the SA node is initiating rhythms, which may cause the heart to b ...
... fatigue, or other symptoms. Fast heartbeats cause the blood to pump inefficiently. There are two types of fast heartbeats: focal arrhythmias and reentrant arrhythmias. In focal arrhythmia (such as focal tachycardia), a site other than the SA node is initiating rhythms, which may cause the heart to b ...
Cardiac disorders of the newborn
... - If the leak is severe enough, it can lead to congestive heart failure - The high pressure in the right atrium keeps the PFO open thus allowing deoxygenated blood to be pumped out into the systemic circulation. - Mild defects may require no specific treatment, only prophylaxis for bacterial endocar ...
... - If the leak is severe enough, it can lead to congestive heart failure - The high pressure in the right atrium keeps the PFO open thus allowing deoxygenated blood to be pumped out into the systemic circulation. - Mild defects may require no specific treatment, only prophylaxis for bacterial endocar ...
Rheumatic heart disease (RHD)
... Pathophysiology : Blood cannot flow freely from the left atrium to the left ventricle during diastole -- left atrial pressure as well as volume increases --- increase in pressure and volume occurs in the pulmonary veins and capillaries --- when the pulmonary venous pressure exceeds the plasma ...
... Pathophysiology : Blood cannot flow freely from the left atrium to the left ventricle during diastole -- left atrial pressure as well as volume increases --- increase in pressure and volume occurs in the pulmonary veins and capillaries --- when the pulmonary venous pressure exceeds the plasma ...
How to Program a Pacemaker: Pacing mode, Rate
... Cannot be “fooled” by pressure on the can Con: low specificity ...
... Cannot be “fooled” by pressure on the can Con: low specificity ...
Gene Regulatory Networks in the Evolution and
... ancestral organism (16). As muscle cells diversified, MEF2 became a central component of muscle gene regulatory networks and is the only myogenic transcription factor known to be associated with the differentiation of all muscle cell types. In cardiac muscle cells, MEF2 cooperates with the core card ...
... ancestral organism (16). As muscle cells diversified, MEF2 became a central component of muscle gene regulatory networks and is the only myogenic transcription factor known to be associated with the differentiation of all muscle cell types. In cardiac muscle cells, MEF2 cooperates with the core card ...
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.