The endurance athletes heart: acute stress and chronic adaptation
... pathological Q-waves; left atrial enlargement; left axis deviation/left anterior hemiblock; right axis deviation/left posterior hemiblock; right ventricular hypertrophy; ventricular preexcitation; complete left or right bundle branch block; long-QT or short-QT interval; and Brugada-like early repola ...
... pathological Q-waves; left atrial enlargement; left axis deviation/left anterior hemiblock; right axis deviation/left posterior hemiblock; right ventricular hypertrophy; ventricular preexcitation; complete left or right bundle branch block; long-QT or short-QT interval; and Brugada-like early repola ...
Left Ventricular Dynamic Geometry in the Intact and Open Chest Dog
... systolic shape changes are reversed. During slow filling, only small shape changes occur. Opening the pleura or performing a sternotomy and pericardiectomy m,akes the heart change orientation within the chest, but does not alter the magnitude of shortening, relative to the left ventricle's enddiasto ...
... systolic shape changes are reversed. During slow filling, only small shape changes occur. Opening the pleura or performing a sternotomy and pericardiectomy m,akes the heart change orientation within the chest, but does not alter the magnitude of shortening, relative to the left ventricle's enddiasto ...
... Heart Center, one of the outstanding programs at The Children’s Hospital at Montefiore (CHAM). CHAM is one of the nation’s top hospitals for children, earning the distinction of being included in U.S. News and World Report’s “Best Children’s Hospitals” rankings for the third consecutive year. In thi ...
Obstructive Sleep Apnea and its Relationship to Cardiac Arrhythmias
... chronic effects on the cardiovascular system, and there is increasing evidence that OSA increases cardiovascular morbidity and mortality.2 Nevertheless, many risk factors for OSA (including male gender, advanced age, and obesity) are the same for cardiovascular disease, which makes it difficult to r ...
... chronic effects on the cardiovascular system, and there is increasing evidence that OSA increases cardiovascular morbidity and mortality.2 Nevertheless, many risk factors for OSA (including male gender, advanced age, and obesity) are the same for cardiovascular disease, which makes it difficult to r ...
EFFECTIVENESS OF A HANDHELD REMOTE ECG MONITOR
... monitoring system and evaluating its potential usefulness in early detection of heart conduction problems. The raw ECG recordings were sent by the handheld monitor (client) to a remote server, which performed an on-line ECG analysis and sent the results back to the client. Real-time feedback provide ...
... monitoring system and evaluating its potential usefulness in early detection of heart conduction problems. The raw ECG recordings were sent by the handheld monitor (client) to a remote server, which performed an on-line ECG analysis and sent the results back to the client. Real-time feedback provide ...
Effect of Drugs on Daphnia
... Daphnia typically live 40 to 56 days, varying according to species and environmental con ditions. Each female has a brood chamber holding 6-10 eggs, which turn into embryos and are released within a few days. Juveniles reach sexual maturity in 6 to 10 days. A healthy population of Daphnia consists m ...
... Daphnia typically live 40 to 56 days, varying according to species and environmental con ditions. Each female has a brood chamber holding 6-10 eggs, which turn into embryos and are released within a few days. Juveniles reach sexual maturity in 6 to 10 days. A healthy population of Daphnia consists m ...
IN UTERO FUNCTION FOLLOWING GESTATIONAL EXPOSURE TO DIMETHADIONE, THE N-DEMETHYLATED METABOLITE OF
... related in utero functional deficits. Furthermore, although about 80% of clinical VSD resolve within a year, the long-term effects after their resolution are unknown due to lack of clinical follow-up. Chemical treatment was used to induce VSD in the rat and to investigate their functional consequenc ...
... related in utero functional deficits. Furthermore, although about 80% of clinical VSD resolve within a year, the long-term effects after their resolution are unknown due to lack of clinical follow-up. Chemical treatment was used to induce VSD in the rat and to investigate their functional consequenc ...
Preview the material
... The frequency of long QT syndrome is unknown (possibly about 1 per 5000 population). The condition is present in all races and ethnic groups, although frequency may differ among these populations. However, population-based prevalence studies are not available on this disease at the current time. Lon ...
... The frequency of long QT syndrome is unknown (possibly about 1 per 5000 population). The condition is present in all races and ethnic groups, although frequency may differ among these populations. However, population-based prevalence studies are not available on this disease at the current time. Lon ...
Left Ventricular Assist Devices - Ether
... each year3 and is the primary diagnosis for over 900,000 hospitalizations per year.4 In 1990 the age-adjusted death rate from congestive heart failure was 106.4 per 100,000,5 more than that from breast cancer and the acquired immunodeficiency syndrome combined.6,7 The median survival after diagnosis ...
... each year3 and is the primary diagnosis for over 900,000 hospitalizations per year.4 In 1990 the age-adjusted death rate from congestive heart failure was 106.4 per 100,000,5 more than that from breast cancer and the acquired immunodeficiency syndrome combined.6,7 The median survival after diagnosis ...
A Prospective, Randomized Trial of an Emergency
... this study. Patients from outside of Olmsted County or its surrounding 9 counties were not eligible for enrollment. Interventions and Methods of Measurement The 8-hour ED observation unit protocol included recording of an ECG, chest radiograph, and routine laboratory investigations, including electr ...
... this study. Patients from outside of Olmsted County or its surrounding 9 counties were not eligible for enrollment. Interventions and Methods of Measurement The 8-hour ED observation unit protocol included recording of an ECG, chest radiograph, and routine laboratory investigations, including electr ...
Heart Failure
... Heart failure is a clinical syndrome that results from any structural or functional cardiac disorder that impairs the ability of the ventricle to fill with or eject blood to adequately meet the needs of the body. The syndrome is characterized by symptoms and signs of increased tissue water and decre ...
... Heart failure is a clinical syndrome that results from any structural or functional cardiac disorder that impairs the ability of the ventricle to fill with or eject blood to adequately meet the needs of the body. The syndrome is characterized by symptoms and signs of increased tissue water and decre ...
Advanced Systolic Function - Society of Cardiovascular
... the cardiac cycle. Direct imaging of the left ventricle throughout the cardiac cycle can be used to provide information about left ventricular wall thickness, chamber size, and contractile performance. TEE measurements of global systolic function are useful for clinical decision making because they ...
... the cardiac cycle. Direct imaging of the left ventricle throughout the cardiac cycle can be used to provide information about left ventricular wall thickness, chamber size, and contractile performance. TEE measurements of global systolic function are useful for clinical decision making because they ...
Structural mechanics of the mosquito heart and its function in
... Although the frequency of heart contractions was the same regardless of pulse direction, the heart spent more time, and hence contracted more, in the anterograde direction (t-test P<0.0001). The average number of anterograde contractions in a 60s recording was 59.1±2.46 (±s.d.) whereas the average ...
... Although the frequency of heart contractions was the same regardless of pulse direction, the heart spent more time, and hence contracted more, in the anterograde direction (t-test P<0.0001). The average number of anterograde contractions in a 60s recording was 59.1±2.46 (±s.d.) whereas the average ...
Rhythm Control Versus Rate Control and€Clinical Outcomes in
... METHODS Patients managed with a rhythm control strategy targeting maintenance of sinus rhythm were retrospectively compared with a strategy of rate control alone in a AF registry across various U.S. practice settings. Unadjusted and adjusted (inverse-propensity weighted) outcomes were estimated. RES ...
... METHODS Patients managed with a rhythm control strategy targeting maintenance of sinus rhythm were retrospectively compared with a strategy of rate control alone in a AF registry across various U.S. practice settings. Unadjusted and adjusted (inverse-propensity weighted) outcomes were estimated. RES ...
Advances in Arrhythmia and Electrophysiology
... palpitations, or other symptoms such as chest pain, presyncope, syncope, or heart failure manifested by decreased effort tolerance, possibly as a result of decreased effective cardiac output.3 The vast majority of these patients are healthy with no known structural heart disease,4 but a detailed fam ...
... palpitations, or other symptoms such as chest pain, presyncope, syncope, or heart failure manifested by decreased effort tolerance, possibly as a result of decreased effective cardiac output.3 The vast majority of these patients are healthy with no known structural heart disease,4 but a detailed fam ...
Baroreceptor reflex in heart failure
... rate and arterial pressure responses to intracoronary injections of veratridine and prostacyclin are normal or enhanced in conscious dogs with pacing-induced heart failure[75]. Since veratridine stimulates cardiac vagal afferents with both chemically sensitive and mechanically sensitive endings, thi ...
... rate and arterial pressure responses to intracoronary injections of veratridine and prostacyclin are normal or enhanced in conscious dogs with pacing-induced heart failure[75]. Since veratridine stimulates cardiac vagal afferents with both chemically sensitive and mechanically sensitive endings, thi ...
Advances in Arrhythmia and Electrophysiology
... palpitations, or other symptoms such as chest pain, presyncope, syncope, or heart failure manifested by decreased effort tolerance, possibly as a result of decreased effective cardiac output.3 The vast majority of these patients are healthy with no known structural heart disease,4 but a detailed fam ...
... palpitations, or other symptoms such as chest pain, presyncope, syncope, or heart failure manifested by decreased effort tolerance, possibly as a result of decreased effective cardiac output.3 The vast majority of these patients are healthy with no known structural heart disease,4 but a detailed fam ...
Cardiac Pacemakers
... impedance across the chest cavity to calculate changes in lung volume over time ...
... impedance across the chest cavity to calculate changes in lung volume over time ...
ATP-Sensitive Potassium Channel Blocker HMR 1883 Reduces
... deterioration of each of these changes (Hill and Gettes, 1980; Bekheit et al., 1990; Gettes and Cascio, 1992). Therefore, blocking the ischemia-induced opening of KATP channels seems to be a promising antiarrhythmic approach. In fact, the KATP channel blocker glibenclamide has been shown to inhibit ...
... deterioration of each of these changes (Hill and Gettes, 1980; Bekheit et al., 1990; Gettes and Cascio, 1992). Therefore, blocking the ischemia-induced opening of KATP channels seems to be a promising antiarrhythmic approach. In fact, the KATP channel blocker glibenclamide has been shown to inhibit ...
Atrial Fibrillation After Lung Transplantation
... Atrial fibrillation is among the most common complications after lung transplantation with a reported incidence of 20%-39%. Its occurrence has been associated with increased hospital stay and in-hospital mortality in some series.9 The mechanisms leading to atrial fibrillation in this setting are lik ...
... Atrial fibrillation is among the most common complications after lung transplantation with a reported incidence of 20%-39%. Its occurrence has been associated with increased hospital stay and in-hospital mortality in some series.9 The mechanisms leading to atrial fibrillation in this setting are lik ...
Human coronary sinus — from Galen to modern times
... next improved by Svammerdam and Ragnier de Graaf. At that time anatomic specimens were composed by application of various filling media such as air, water or liquid pigments. During preparation injected vessels were commonly damaged by the pressure. Thus obtained specimens were not lasting. That is ...
... next improved by Svammerdam and Ragnier de Graaf. At that time anatomic specimens were composed by application of various filling media such as air, water or liquid pigments. During preparation injected vessels were commonly damaged by the pressure. Thus obtained specimens were not lasting. That is ...
1 introduction - Jyväskylän yliopisto
... body is resting the heart pumps each minute about 5 liters blood to the lungs and the same volume to the rest of the body. At this rate, it pumps more than 14000 liters of blood in a day through an estimated 100 000 km of blood vessels. Since we are not resting all the time the actual flow is much l ...
... body is resting the heart pumps each minute about 5 liters blood to the lungs and the same volume to the rest of the body. At this rate, it pumps more than 14000 liters of blood in a day through an estimated 100 000 km of blood vessels. Since we are not resting all the time the actual flow is much l ...
Evaluation of Melissa officinalis (Lemon Balm) Effects on Heart
... tial inactivation of sodium channels and hence can prolong the QRS interval (22). Based on QRS interval prolongation induced by M. officinalis extract, it is possible that consumption of this extract can slow ventricular conductivity by blocking sodium or potassium (IK1) or both currents. The blocka ...
... tial inactivation of sodium channels and hence can prolong the QRS interval (22). Based on QRS interval prolongation induced by M. officinalis extract, it is possible that consumption of this extract can slow ventricular conductivity by blocking sodium or potassium (IK1) or both currents. The blocka ...
Mending a Faltering Heart
... atria, and the conduction system in lineage-tracing studies.10,11 The CPCs of the second heart field, marked by the LIM/homeodomain transcription factor ISL1 also give rise to cardiomyocytes, conductive cells, and other cardiac cell types.12–14 The epicardium, a single layer of cells enclosing the h ...
... atria, and the conduction system in lineage-tracing studies.10,11 The CPCs of the second heart field, marked by the LIM/homeodomain transcription factor ISL1 also give rise to cardiomyocytes, conductive cells, and other cardiac cell types.12–14 The epicardium, a single layer of cells enclosing the h ...
Remodelling of gap junctions and connexin expression in diseased
... adjacent cells, and internalized (non-functional) gapjunctional membrane, contribute to this abnormal pattern.47 A similar change, found in some rat models of ventricular hypertrophy, correlates with reduced longitudinal conduction velocity, a potentially pro-arrhythmic change.48 At 4 days post-infa ...
... adjacent cells, and internalized (non-functional) gapjunctional membrane, contribute to this abnormal pattern.47 A similar change, found in some rat models of ventricular hypertrophy, correlates with reduced longitudinal conduction velocity, a potentially pro-arrhythmic change.48 At 4 days post-infa ...