Influences of Physical Training on the Heart of Dogs
... open heart surgery during which beads and clips were placed in the left ventricular myocardium, all dogs were maintained in cages for at least 6 weeks prior to the initial study. Dogs 1-8 were subjected to a physical training period that consisted of treadmill running at approximately 4-8 mph on a I ...
... open heart surgery during which beads and clips were placed in the left ventricular myocardium, all dogs were maintained in cages for at least 6 weeks prior to the initial study. Dogs 1-8 were subjected to a physical training period that consisted of treadmill running at approximately 4-8 mph on a I ...
Progression of mitral regurgitation
... Manuscript received December 17, 1998; revised manuscript received April 22, 1999, accepted June 11, 1999. ...
... Manuscript received December 17, 1998; revised manuscript received April 22, 1999, accepted June 11, 1999. ...
Mohamed Khairy Abd Alnaby Abd Alhamid Alshafey_paper1
... lesion without treating the TV may improve or even alleviate mild TR(10). However, uncorrected moderate and severe TR may persist or even worsen after mitral valve surgery, leading to progressive heart failure and death (11, 12) In addition; reoperation for residual TR carries significant risks and ...
... lesion without treating the TV may improve or even alleviate mild TR(10). However, uncorrected moderate and severe TR may persist or even worsen after mitral valve surgery, leading to progressive heart failure and death (11, 12) In addition; reoperation for residual TR carries significant risks and ...
1 - European Heart Journal
... serving as conduits for paradoxical embolization (i.e. PFO, patent foramen ovale). Recommendations are important in this field for several reasons. (1) The clinical diagnosis is now dominated by echocardiography which has become the standard to evaluate these patients; however, better transducers an ...
... serving as conduits for paradoxical embolization (i.e. PFO, patent foramen ovale). Recommendations are important in this field for several reasons. (1) The clinical diagnosis is now dominated by echocardiography which has become the standard to evaluate these patients; however, better transducers an ...
Implantable Ventricular Assist Devices and Total Artificial Hearts
... compared HeartMate I and HeartMate II recipients at a single center, finding the same 1-year survival and similar rates of subsequent development of right heart failure. Serious adverse events occurring after HeartMate II-implantation include bleeding episodes requiring reoperation, stroke, infectio ...
... compared HeartMate I and HeartMate II recipients at a single center, finding the same 1-year survival and similar rates of subsequent development of right heart failure. Serious adverse events occurring after HeartMate II-implantation include bleeding episodes requiring reoperation, stroke, infectio ...
Clinical Medicine Insights: Cardiology Arrhythmogenic Right
... ARVC/D should be suspected in a young patient with palpitations, syncope or aborted SCD. VT with LBBB morphology is the classic presentation, but as mentioned above, VT with RBBB may be present if the LV is involved. Other electrocardiographic abnormalities such as inverted T waves in right precordi ...
... ARVC/D should be suspected in a young patient with palpitations, syncope or aborted SCD. VT with LBBB morphology is the classic presentation, but as mentioned above, VT with RBBB may be present if the LV is involved. Other electrocardiographic abnormalities such as inverted T waves in right precordi ...
Conclusion: RV-2D strain is a strong independent - HAL
... Ultrasound). Standard RV and LV function parameters were determined as recommended by the American Society of Echocardiography,13 and for each parameter the mean of three consecutive cardiac cycles was recorded. These parameters included the transcuspid annular plane systolic excursion (TAPSE) on th ...
... Ultrasound). Standard RV and LV function parameters were determined as recommended by the American Society of Echocardiography,13 and for each parameter the mean of three consecutive cardiac cycles was recorded. These parameters included the transcuspid annular plane systolic excursion (TAPSE) on th ...
Short PR Interval
... The most common arrhythmia seen in WPW patients is atrioventricular reentrant or reciprocating tachycardia (AVRT). In the setting of AVRT, activation of the ventricle occurs through either the normal conduction system and/or the accessory pathway with return of the impulse to the atrium by the other ...
... The most common arrhythmia seen in WPW patients is atrioventricular reentrant or reciprocating tachycardia (AVRT). In the setting of AVRT, activation of the ventricle occurs through either the normal conduction system and/or the accessory pathway with return of the impulse to the atrium by the other ...
Evaluating strict and conventional left bundle
... (LV) mechanical function by reducing dyssynchrony between the interventricular septum and LV lateral wall. Cardiac resynchronization therapy devices differ from conventional pacemakers and implantable defibrillators by having an additional lead for LV epicardial stimulation. The additional LV lead n ...
... (LV) mechanical function by reducing dyssynchrony between the interventricular septum and LV lateral wall. Cardiac resynchronization therapy devices differ from conventional pacemakers and implantable defibrillators by having an additional lead for LV epicardial stimulation. The additional LV lead n ...
Graduate Certificate in Clinical Ultrasound
... 50 Clinical Ultrasound Cases in the workplace, and submit a logbook of the cases. In addition, 50 Advanced Clinical Ultrasound Cases will be provided for interpretation and reporting to provide a range of rare cases that are unlikely to be encountered in normal daily practice. ...
... 50 Clinical Ultrasound Cases in the workplace, and submit a logbook of the cases. In addition, 50 Advanced Clinical Ultrasound Cases will be provided for interpretation and reporting to provide a range of rare cases that are unlikely to be encountered in normal daily practice. ...
How to Distinguish Between Innocent and Pathologic Murmurs in
... intensity with inspiration (for example tricupsid regurgitation and pdmonary stenasis), whereas left-sided events tend to be Iouder during expiration (for example, murmur of ventricular septal defect, mitral regurgitation. or valvar aortic stenosis). During inspiration there is an increase in venous ...
... intensity with inspiration (for example tricupsid regurgitation and pdmonary stenasis), whereas left-sided events tend to be Iouder during expiration (for example, murmur of ventricular septal defect, mitral regurgitation. or valvar aortic stenosis). During inspiration there is an increase in venous ...
Cardiac reserve mobilization trend during exercise and recovery
... Therefore, the change trend of the amplitude of the first heart sound (S1) can be used to evaluate cardiac reserve and cardiac endurance. Since the amplitude of S2 is a reflection of the peripheral resistance [8], S1/S2 ratio reflects the relationship between the cardiac contractility and the periph ...
... Therefore, the change trend of the amplitude of the first heart sound (S1) can be used to evaluate cardiac reserve and cardiac endurance. Since the amplitude of S2 is a reflection of the peripheral resistance [8], S1/S2 ratio reflects the relationship between the cardiac contractility and the periph ...
Right Ventricular Geometry and Function in Pulmonary
... fractional area change, tricuspid anulus plane systolic escursion (TAPSE), lateral wall S wave velocity by Tissue Doppler, myocardial performance index, and longitudinal strain. Among them only TAPSE has shown to be a strong predictor of survival [25]. However, TAPSE reflects only the longitudinal s ...
... fractional area change, tricuspid anulus plane systolic escursion (TAPSE), lateral wall S wave velocity by Tissue Doppler, myocardial performance index, and longitudinal strain. Among them only TAPSE has shown to be a strong predictor of survival [25]. However, TAPSE reflects only the longitudinal s ...
Transcatheter Therapies for Mitral Regurgitation
... and exceeds that of aortic valve disease on both a community and population level when assessed by echocardiography (4). Prognosis with MR differs as a function of both etiology and LV function; treatment protocols, including medical interventions and cardiac resynchronization therapy when indicated ...
... and exceeds that of aortic valve disease on both a community and population level when assessed by echocardiography (4). Prognosis with MR differs as a function of both etiology and LV function; treatment protocols, including medical interventions and cardiac resynchronization therapy when indicated ...
TotaI Excitation of the IsoIated Human Heart
... carried out to determine whether isolation and perfusion of the heart influenced the excitation of the ventricle. Five mongrel dogs, weighing 18 to 24 kg, were anesthetized with Na-pentobarbital (30 mg/kg). A midstemal thoracotomy was performed, and the heart was exposed. Multielectrode needIes were ...
... carried out to determine whether isolation and perfusion of the heart influenced the excitation of the ventricle. Five mongrel dogs, weighing 18 to 24 kg, were anesthetized with Na-pentobarbital (30 mg/kg). A midstemal thoracotomy was performed, and the heart was exposed. Multielectrode needIes were ...
Pediatric Cardiology and Cardiovascular Surgery
... to which the arterial duct responded and helped to clarify pharmacological manipulations that could lead to ductal constriction and closure or to persistent patency. Coceani and Olley, among others, demonstrated in the lamb model that patency of the arterial duct could be maintained through administ ...
... to which the arterial duct responded and helped to clarify pharmacological manipulations that could lead to ductal constriction and closure or to persistent patency. Coceani and Olley, among others, demonstrated in the lamb model that patency of the arterial duct could be maintained through administ ...
Full text - FNWI (Science) Education Service Centre
... aorta is the input impedance of the aorta at a specific frequency. Characteristic impedance can be seen as a link between the Windkessel model and the way the waves travel through the arterial system. Characteristic impedance is equal to the wave speed multiplied by the blood density divided by the ...
... aorta is the input impedance of the aorta at a specific frequency. Characteristic impedance can be seen as a link between the Windkessel model and the way the waves travel through the arterial system. Characteristic impedance is equal to the wave speed multiplied by the blood density divided by the ...
Dear High School, Sudden Cardiac Arrest
... now being met by the foundation that bears his name. Nationwide, approximately 7,000 youth die of sudden cardiac arrest every year, mostly due to undiagnosed heart conditions. Cardiovascular disease is the second leading medical cause of death in children and adolescents in the United States. In Con ...
... now being met by the foundation that bears his name. Nationwide, approximately 7,000 youth die of sudden cardiac arrest every year, mostly due to undiagnosed heart conditions. Cardiovascular disease is the second leading medical cause of death in children and adolescents in the United States. In Con ...
Myocardial hypertrophy and its role in heart failure with preserved
... Comorbidities, such as arterial hypertension, diabetes, or chronic kidney disease, which promote LVH (107, 112), are common in heart failure patients with preserved as well as with reduced ejection fraction (HFrEF). LVH is also often observed in HFpEF (mostly concentric LVH) and HFrEF (often eccentr ...
... Comorbidities, such as arterial hypertension, diabetes, or chronic kidney disease, which promote LVH (107, 112), are common in heart failure patients with preserved as well as with reduced ejection fraction (HFrEF). LVH is also often observed in HFpEF (mostly concentric LVH) and HFrEF (often eccentr ...
Miscellaneous Cardiac Diseases
... Lungs and abdomen are symmetric so right and left sides can’t be defined Isomerism-both ...
... Lungs and abdomen are symmetric so right and left sides can’t be defined Isomerism-both ...
Severe right heart failure in two patients with thyrotoxicosis
... Our first patient had no pre-existing heart important because thyrotoxicosis is a treatable entity disease and thyrotoxicosis was his only concurrent and the heart failure may be completely reversible. ...
... Our first patient had no pre-existing heart important because thyrotoxicosis is a treatable entity disease and thyrotoxicosis was his only concurrent and the heart failure may be completely reversible. ...
Modeling the relation between cardiac pump function and myofiber
... properties within the heart, occurring for instance in the paced or in the infarcted heart. From these models, in the normal heart properties as well as load appeared to be quite uniform, especially during systole. In the present study a tremendous simplification was applied by leaving out spatial va ...
... properties within the heart, occurring for instance in the paced or in the infarcted heart. From these models, in the normal heart properties as well as load appeared to be quite uniform, especially during systole. In the present study a tremendous simplification was applied by leaving out spatial va ...
Print - Circulation
... fulfilling the study criteria (defined below), selected at random from those undergoing cardiac surgery having given prior written consent, or from transplant donor hearts. The biopsies were taken from either the left ventricular apex or the mid right ventricular free wall as appropriate in each cas ...
... fulfilling the study criteria (defined below), selected at random from those undergoing cardiac surgery having given prior written consent, or from transplant donor hearts. The biopsies were taken from either the left ventricular apex or the mid right ventricular free wall as appropriate in each cas ...
Multimodality Imaging Strategies for the Assessment of Aortic Stenosis
... LF-LG AS has the worst prognosis and those with NF-LG AS has the best prognosis.4,7,14 Furthermore, AVR improves outcomes in both patients with HG AS and those with paradoxical LF-LG AS. In patients with NF-LG AS, previous studies have yielded conflicting results on the effect of AVR on outcomes. Th ...
... LF-LG AS has the worst prognosis and those with NF-LG AS has the best prognosis.4,7,14 Furthermore, AVR improves outcomes in both patients with HG AS and those with paradoxical LF-LG AS. In patients with NF-LG AS, previous studies have yielded conflicting results on the effect of AVR on outcomes. Th ...
Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy (HCM) is a primary disease of the myocardium (the muscle of the heart) in which a portion of the myocardium is hypertrophied (thickened) without any obvious cause, creating functional impairment of the cardiac muscle. It is a leading cause of sudden cardiac death in young athletes.The occurrence of hypertrophic cardiomyopathy is a significant cause of sudden unexpected cardiac death in any age group and as a cause of disabling cardiac symptoms. Younger people are likely to have a more severe form of hypertrophic cardiomyopathy.HCM is frequently asymptomatic until sudden cardiac death, and for this reason some suggest routinely screening certain populations for this disease.A cardiomyopathy is a disease that affects the muscle of the heart. With HCM, the myocytes (cardiac contractile cells) in the heart increase in size, which results in the thickening of the heart muscle. In addition, the normal alignment of muscle cells is disrupted, a phenomenon known as myocardial disarray. HCM also causes disruptions of the electrical functions of the heart. HCM is most commonly due to a mutation in one of nine sarcomeric genes that results in a mutated protein in the sarcomere, the primary component of the myocyte (the muscle cell of the heart). These are predominantly single-point missense mutations in the genes for beta-myosin heavy chain (MHC), myosin-binding protein C, cardiac troponinT, or tropomyosin. These mutations cause myofibril and myocyte structural abnormalities and possible deficiencies in force generation. Not to be confused with dilated cardiomyopathy or any other cardiomyopathy.While most literature so far focuses on European, American, and Japanese populations, HCM appears in all ethnic groups. The prevalence of HCM is about 0.2% to 0.5% of the general population.