Paroxysmal Supraventricular Tachycardia
... irregularity of cycle length should have been noted during the scanning interval. Furthermore, in the presence of premature capture of the low right atrium by as much as 100 msec (fig. 3B), it seems very unlikely that the impulse would not have altered the cycle length of the tachycardia. Fortuitous ...
... irregularity of cycle length should have been noted during the scanning interval. Furthermore, in the presence of premature capture of the low right atrium by as much as 100 msec (fig. 3B), it seems very unlikely that the impulse would not have altered the cycle length of the tachycardia. Fortuitous ...
DR Sarcoid 30.4.15
... Diagnosis Because of the potential life-threatening complications and potential benefit of treatment, all patients diagnosed with sarcoidosis should be screened for cardiac involvement ...
... Diagnosis Because of the potential life-threatening complications and potential benefit of treatment, all patients diagnosed with sarcoidosis should be screened for cardiac involvement ...
Clinical Spectrum of Acute or New
... occurred within the first three days after surgery. The risk was greatest with intrathoracic surgery (odds ratio 9.2). Alcohol: Alcohol intake has a very interesting relationship with AF. Atrial fibrillation occurs in up to 60 percent of binge drinkers with or without an underlying alcoholic cardiom ...
... occurred within the first three days after surgery. The risk was greatest with intrathoracic surgery (odds ratio 9.2). Alcohol: Alcohol intake has a very interesting relationship with AF. Atrial fibrillation occurs in up to 60 percent of binge drinkers with or without an underlying alcoholic cardiom ...
Artificial Hearts and Ventricular Assist Devices
... IMPORTANT REMINDER: The health plan’s Medicare Advantage Medical Policies are developed to provide guidance for members and providers regarding coverage in accordance with the member Evidence of Coverage (EOC) booklet. Benefit determinations are based in all cases on any applicable EOC language and ...
... IMPORTANT REMINDER: The health plan’s Medicare Advantage Medical Policies are developed to provide guidance for members and providers regarding coverage in accordance with the member Evidence of Coverage (EOC) booklet. Benefit determinations are based in all cases on any applicable EOC language and ...
Automatic External Defibrillators
... strategic locations on the chest of the victim and the power pack delivers a shock when a button is pushed. If effective, the shock restores normal electrical rhythm to the heart. An AED will not deliver a shock unless it first detects an abnormal heart rhythm. Where Are AEDs Located? AEDs are often ...
... strategic locations on the chest of the victim and the power pack delivers a shock when a button is pushed. If effective, the shock restores normal electrical rhythm to the heart. An AED will not deliver a shock unless it first detects an abnormal heart rhythm. Where Are AEDs Located? AEDs are often ...
Document
... 1. Most impairment of (the stronger) left heart function is only manifest under load (e.g. exercise) and not at rest until very late. Therefore, any "decompensation" only occurs intermittently, with time in between for circulatory readjustment to the status quo - any tendency for "forward" failure ...
... 1. Most impairment of (the stronger) left heart function is only manifest under load (e.g. exercise) and not at rest until very late. Therefore, any "decompensation" only occurs intermittently, with time in between for circulatory readjustment to the status quo - any tendency for "forward" failure ...
Anatomical Obstacles to Catheter Ablation for Atrioventricular Nodal
... line of treatment is typically radiofrequency catheter ablation (RFCA), though the efficacy and safety of this procedure can be limited by anatomic variations. We present two cases of patients with anatomic variations undergoing RFCA for AVNRT. These variations were: first, a diverticulum in the rig ...
... line of treatment is typically radiofrequency catheter ablation (RFCA), though the efficacy and safety of this procedure can be limited by anatomic variations. We present two cases of patients with anatomic variations undergoing RFCA for AVNRT. These variations were: first, a diverticulum in the rig ...
Assessment and consequences of the constant-volume - AJP
... Demographics for all subjects are listed in Table 1. The normalized total pericardial volume measurements as a function of time for all subjects are displayed in Fig. 2. Data from the subject with congenital absence of the pericardium are shown separately (Fig. 2, open circles). In normal subjects, ...
... Demographics for all subjects are listed in Table 1. The normalized total pericardial volume measurements as a function of time for all subjects are displayed in Fig. 2. Data from the subject with congenital absence of the pericardium are shown separately (Fig. 2, open circles). In normal subjects, ...
No Slide Title
... • Myocardial infarction—sudden death of a patch of myocardium resulting from long-term obstruction of coronary circulation – Atheroma (blood clot or fatty deposit) often obstructs coronary arteries – Cardiac muscle downstream of the blockage dies – Heavy pressure or squeezing pain radiating into the ...
... • Myocardial infarction—sudden death of a patch of myocardium resulting from long-term obstruction of coronary circulation – Atheroma (blood clot or fatty deposit) often obstructs coronary arteries – Cardiac muscle downstream of the blockage dies – Heavy pressure or squeezing pain radiating into the ...
What is cardiomyopathy?
... vary depending on how they affect the heart muscle. Dilated cardiomyopathy (DCM) This is when the muscle of the left ventricle becomes enlarged (dilated) and stretched. This makes the wall of the ventricle bigger but thinner, and so the muscle is weaker and less able to pump blood out of the heart. ...
... vary depending on how they affect the heart muscle. Dilated cardiomyopathy (DCM) This is when the muscle of the left ventricle becomes enlarged (dilated) and stretched. This makes the wall of the ventricle bigger but thinner, and so the muscle is weaker and less able to pump blood out of the heart. ...
Cardiologia
... transmitted to the heart at end-systole when the atria are full and the ventricles contracted. Any compressive force on the chest or abdomen can raise pressures in the vena cava and pulmonary vasculature, which leads to a marked increase in intra-atrial pressure against the closed atrioventricular v ...
... transmitted to the heart at end-systole when the atria are full and the ventricles contracted. Any compressive force on the chest or abdomen can raise pressures in the vena cava and pulmonary vasculature, which leads to a marked increase in intra-atrial pressure against the closed atrioventricular v ...
Cardiac mechanosensitive integrator
... bed rest, lack of exercise, and more unusual situations such as weightlessness in zero-gravity, can also lead to thickening of the heart wall, but the cardiac muscles are weakened, and the blood-pumping action is considerably reduced. The regular expansion and contraction of the heart is controlled ...
... bed rest, lack of exercise, and more unusual situations such as weightlessness in zero-gravity, can also lead to thickening of the heart wall, but the cardiac muscles are weakened, and the blood-pumping action is considerably reduced. The regular expansion and contraction of the heart is controlled ...
essential agents in management of heart failure.
... 20-40% of all heart failure patients have normal ejection fractions! (it is likely that majority of elderly heart failure patients have primarily diastolic dysfunction). ● mortality rates are lower than with low ejection fractions (however, hospitalization rates are comparable). ● non-invasive measu ...
... 20-40% of all heart failure patients have normal ejection fractions! (it is likely that majority of elderly heart failure patients have primarily diastolic dysfunction). ● mortality rates are lower than with low ejection fractions (however, hospitalization rates are comparable). ● non-invasive measu ...
The prolonged QT interval - Postgraduate Medical Journal
... the effects of causing temporal dispersal of repolarization often combined with increased excitability. Temporal dispersal of the repolarization process may occur as a result of premature repolarization of some myocardial cells or as abnormally delayed repolarization of other cells. The latter may b ...
... the effects of causing temporal dispersal of repolarization often combined with increased excitability. Temporal dispersal of the repolarization process may occur as a result of premature repolarization of some myocardial cells or as abnormally delayed repolarization of other cells. The latter may b ...
Breaking It Gently: A Rare Case of Arrhythmogenic Right Ventricular
... relatively well though they do carry a risk of developing heart failure and ventricular arrhythmias. ...
... relatively well though they do carry a risk of developing heart failure and ventricular arrhythmias. ...
Evaluation of the Role of IKACh in Atrial Fibrillation Using a Mouse
... CONCLUSIONS Activation of IKACh predisposed to AF and lack of IKACh prevented AF. It is likely that IKACh plays a crucial role in the generation of AF in mice. Specific IKACh blockers might be useful for the treatment of AF without significant adverse effects on the atrioventricular node or the vent ...
... CONCLUSIONS Activation of IKACh predisposed to AF and lack of IKACh prevented AF. It is likely that IKACh plays a crucial role in the generation of AF in mice. Specific IKACh blockers might be useful for the treatment of AF without significant adverse effects on the atrioventricular node or the vent ...
giant left atrial myxoma presenting with heart failure
... 75% located in the left atrium (1,2). It is a slow-growing tumour and can present with various manifestations. It is usually asymptomatic over a long period of time. Some documented clinical manifestations include cryptogenic stroke and obstructive symptoms such as mimics of aortic stenosis, mitral ...
... 75% located in the left atrium (1,2). It is a slow-growing tumour and can present with various manifestations. It is usually asymptomatic over a long period of time. Some documented clinical manifestations include cryptogenic stroke and obstructive symptoms such as mimics of aortic stenosis, mitral ...
Ventricular diastole- Form and Function
... 1) Early rapid filling (dP/dV< 0) 2) Atrial filling (dP/dV > 0) ...
... 1) Early rapid filling (dP/dV< 0) 2) Atrial filling (dP/dV > 0) ...
A novel, minimally invasive, segmental myocardial infarction with a
... Previous studies of arrhythmia formation in rabbit models of healed MI have used an open-chest method of infarction using a thorocotomy for epicardial access followed by ligation of one of the three coronary arteries. This technique, however, has several drawbacks; 1) the use of coronary ligation in ...
... Previous studies of arrhythmia formation in rabbit models of healed MI have used an open-chest method of infarction using a thorocotomy for epicardial access followed by ligation of one of the three coronary arteries. This technique, however, has several drawbacks; 1) the use of coronary ligation in ...
Recent Trends in Medical Imaging by using VLSI
... A model of unipolar/Bipolar Pulse Generator (Pacemaker) is shown in the Fig.- 3. It is the demand Ventricular – inhabited type. Programmed from the QRS complex, it delivers its impulses only when patient’s Ventricular rate falls below the preset pacing rate of the pulse Generator (Pacemaker). Rate i ...
... A model of unipolar/Bipolar Pulse Generator (Pacemaker) is shown in the Fig.- 3. It is the demand Ventricular – inhabited type. Programmed from the QRS complex, it delivers its impulses only when patient’s Ventricular rate falls below the preset pacing rate of the pulse Generator (Pacemaker). Rate i ...
Heart Health - Fred Hutchinson Cancer Research Center
... This includes radiation to the following areas: Chest or thorax (including mantle, mediastinal, and axillary treatment fields) Spine (chest or "thoracic" portion) Whole or upper abdomen ...
... This includes radiation to the following areas: Chest or thorax (including mantle, mediastinal, and axillary treatment fields) Spine (chest or "thoracic" portion) Whole or upper abdomen ...
CARDIAC PHARMACOLOGY OF THE CLADOCERAN, DAPHNIA
... the heart beat did not return to its normal rate but remained low for many hours, after which the animals died. Experiments on the antagonism of acetylcholine by atropine, such as was observed by Obreshkove, were thus impossible to perform. These results do not agree with those obtained by Pickering ...
... the heart beat did not return to its normal rate but remained low for many hours, after which the animals died. Experiments on the antagonism of acetylcholine by atropine, such as was observed by Obreshkove, were thus impossible to perform. These results do not agree with those obtained by Pickering ...
The Johns Hopkins Arrhythmia Service A guide for patients and their families
... minute. In some patients who are otherwise healthy, the heartbeat may slow to less than 60 beats per minute while resting or sleeping. This usually causes no symptoms and does not require treatment. In other patients, bradycardia may occur due to age-related wear and tear on the heart or some other ...
... minute. In some patients who are otherwise healthy, the heartbeat may slow to less than 60 beats per minute while resting or sleeping. This usually causes no symptoms and does not require treatment. In other patients, bradycardia may occur due to age-related wear and tear on the heart or some other ...
Embryonic Heart Rate as a Prognostic Factor for
... in the very early stage.1 However, after demonstration of positive embryonic heart activity, the rate of spontaneous abortion declines to 2% to 5%.2 The embryonic heartbeat can usually be identified by prenatal sonography at 6 weeks’ gestation with a transvaginal transducer, and the heart rate can b ...
... in the very early stage.1 However, after demonstration of positive embryonic heart activity, the rate of spontaneous abortion declines to 2% to 5%.2 The embryonic heartbeat can usually be identified by prenatal sonography at 6 weeks’ gestation with a transvaginal transducer, and the heart rate can b ...
Cardiovascular - Algonquin College
... tissue. The muscles of the atria and ventricles are like skeletal muscle in most ways, but distinguishable by the presence of intercalated disks between the cells. These disks allow impulse to travel from cell to cell faster than in other parts of the body. The specialized conductive tissue contract ...
... tissue. The muscles of the atria and ventricles are like skeletal muscle in most ways, but distinguishable by the presence of intercalated disks between the cells. These disks allow impulse to travel from cell to cell faster than in other parts of the body. The specialized conductive tissue contract ...