Cardiac Rhythm Management Devices (Part I)
... atrioventricular (AV) heart block (AVHB). It is also sometimes used to overdrive or terminate atrial or ventricular tachydysrhythmias. The endpoint for temporary pacing is resolution of the indication or implantation of a permanent pacemaker for a continuing indication. Transvenous endocardial16,17 ...
... atrioventricular (AV) heart block (AVHB). It is also sometimes used to overdrive or terminate atrial or ventricular tachydysrhythmias. The endpoint for temporary pacing is resolution of the indication or implantation of a permanent pacemaker for a continuing indication. Transvenous endocardial16,17 ...
8 15 17 `Working round my heart transplant gave me more to focus on`
... appointment that I wanted to go to university to study nursing and I wanted to become a cardiac clinical nurse specialist. I was told it wasn’t advisable as it was a highly demanding job. The hours were really long, I would be on my feet all day, and I wouldn’t be able to hold the job down for long. ...
... appointment that I wanted to go to university to study nursing and I wanted to become a cardiac clinical nurse specialist. I was told it wasn’t advisable as it was a highly demanding job. The hours were really long, I would be on my feet all day, and I wouldn’t be able to hold the job down for long. ...
Left Ventricular Hypertrophy Is Associated With Increased Infarct
... Background-—Approximately one third of patients with ST-segment elevation myocardial infarction (STEMI) have left ventricular hypertrophy (LVH), which is associated with impaired outcome. However, the causal association between LVH and outcome in STEMI is unknown. We evaluated the association betwee ...
... Background-—Approximately one third of patients with ST-segment elevation myocardial infarction (STEMI) have left ventricular hypertrophy (LVH), which is associated with impaired outcome. However, the causal association between LVH and outcome in STEMI is unknown. We evaluated the association betwee ...
RR interval variation, the QT interval index and risk of primary
... populations suggest that the prognostic value of low heart rate variability is not restricted to the periinfarction period[19,20], it is unknown whether heart rate variability is associated with risk of primary cardiac arrest in these populations. We therefore examined whether RR interval variation ...
... populations suggest that the prognostic value of low heart rate variability is not restricted to the periinfarction period[19,20], it is unknown whether heart rate variability is associated with risk of primary cardiac arrest in these populations. We therefore examined whether RR interval variation ...
Effect of Preload Reduction by Hemodialysis on Left Ventricular
... hypertrophy.1,2 These structural changes of LV are associated with impaired LV perfusion and function.3-5 Contraction of helical myocardial fibers of LV produces torsional deformation of LV. This twisting motion of LV has been shown to be a key factor of normal systolic and diastolic myocardial func ...
... hypertrophy.1,2 These structural changes of LV are associated with impaired LV perfusion and function.3-5 Contraction of helical myocardial fibers of LV produces torsional deformation of LV. This twisting motion of LV has been shown to be a key factor of normal systolic and diastolic myocardial func ...
Increased Central Venous Pressure Is Associated With
... diabetes, hypertension, coronary artery disease, and heart failure (1–7). The pathophysiology is multifactorial and associated with decreased renal perfusion, atherosclerosis and inflammation, endothelial dysfunction, and neurohormonal activation (8 –10). We recently showed that in patients with car ...
... diabetes, hypertension, coronary artery disease, and heart failure (1–7). The pathophysiology is multifactorial and associated with decreased renal perfusion, atherosclerosis and inflammation, endothelial dysfunction, and neurohormonal activation (8 –10). We recently showed that in patients with car ...
- Canadian Journal of Cardiology
... patient’s functional capacity should be assessed. Although measures of functional status other than the NYHA system have been proposed, the landmark trials solely used this as an inclusion criterion.7 Thus, at a minimum, assessment of functional class should include the patient’s NYHA class. Six-min ...
... patient’s functional capacity should be assessed. Although measures of functional status other than the NYHA system have been proposed, the landmark trials solely used this as an inclusion criterion.7 Thus, at a minimum, assessment of functional class should include the patient’s NYHA class. Six-min ...
14 Cardiomegaliya
... - The specific symptoms of the disease, which: has led to cardiomegaly. The list of diseases occurring with cardiomegaly: 1. Diseases associated with expansion chambers of the heart (cardiomyopathy, non-rheumatic carditis, rheumatism). 2. Diseases associated with disorders of the heart valves (rheum ...
... - The specific symptoms of the disease, which: has led to cardiomegaly. The list of diseases occurring with cardiomegaly: 1. Diseases associated with expansion chambers of the heart (cardiomyopathy, non-rheumatic carditis, rheumatism). 2. Diseases associated with disorders of the heart valves (rheum ...
Proarrhythmic Effects Of Antiarrhythmic Drugs: Case Study
... faster conversion. Indeed, in patients with recent onset AF, successful cardioversion is reported in up to 80% of cases with oral therapy, rising only to 90% with intravenous administration.1 Unfortunately, recurrence of AF is common, often requiring long-term drug therapy to improve maintenance of ...
... faster conversion. Indeed, in patients with recent onset AF, successful cardioversion is reported in up to 80% of cases with oral therapy, rising only to 90% with intravenous administration.1 Unfortunately, recurrence of AF is common, often requiring long-term drug therapy to improve maintenance of ...
Baroreflex modulation of ventricular rhythm in atrial fibrillation
... horse, would occur, rhythm induced arterial pressure changes may modulate atrioventricular con- r duction and hence the rhythm[27 J, Second, if very short RR-intervals occur, adjacent intervals may be weakly correlated (Figs 2 and 3), as was also • noted already in 1970 by Bootsma et al.[lOI in man ...
... horse, would occur, rhythm induced arterial pressure changes may modulate atrioventricular con- r duction and hence the rhythm[27 J, Second, if very short RR-intervals occur, adjacent intervals may be weakly correlated (Figs 2 and 3), as was also • noted already in 1970 by Bootsma et al.[lOI in man ...
Assessment of QT and JT Intervals in Patients With Left Bundle
... increases in depolarization duration and not in repolarization. Objectives: In this study, we aimed to apply corrected JT interval (JTc) as an appropriate measure of ventricular repolarization for predicting QTc in a formula. Patients and Methods: The study population consisted of 101 patients with ...
... increases in depolarization duration and not in repolarization. Objectives: In this study, we aimed to apply corrected JT interval (JTc) as an appropriate measure of ventricular repolarization for predicting QTc in a formula. Patients and Methods: The study population consisted of 101 patients with ...
the relative importance of nervous, humoral and intrinsic
... dorsal aorta, and into the caudal vein at a level just posterior to the renal portal veins (for injection of drugs). In those fish (41) in which blood flow was measured, a cannulating electro-magnetic flow transducer (Biotronex Ltd.), 1 cm in length and with a bore of approximately 1 mm, was inserte ...
... dorsal aorta, and into the caudal vein at a level just posterior to the renal portal veins (for injection of drugs). In those fish (41) in which blood flow was measured, a cannulating electro-magnetic flow transducer (Biotronex Ltd.), 1 cm in length and with a bore of approximately 1 mm, was inserte ...
Cardiac Output Venous Return
... heart sound.” Kay: “The murmur did get louder as he leaned forward and exhaled.” Doc: “Yes, that brought his heart closer to your stethoscope. Still, it’s difficult to hear this murmur. Diastolic murmurs aren’t as loud as systolic murmurs.” ...
... heart sound.” Kay: “The murmur did get louder as he leaned forward and exhaled.” Doc: “Yes, that brought his heart closer to your stethoscope. Still, it’s difficult to hear this murmur. Diastolic murmurs aren’t as loud as systolic murmurs.” ...
Echocardiographic Estimation of Pulmonary Artery Pressure in
... portant determinant of left ventricular STI in children with TGA, irrespective of age, heart rate, associated cardiac lesions, digoxin therapy or previous surgery. Increased pulmonary artery pressure should prolong the PEP (in particular, the isovolumetric contraction time) and shorten LVET, thus pr ...
... portant determinant of left ventricular STI in children with TGA, irrespective of age, heart rate, associated cardiac lesions, digoxin therapy or previous surgery. Increased pulmonary artery pressure should prolong the PEP (in particular, the isovolumetric contraction time) and shorten LVET, thus pr ...
3 SHOCK Management of Shock James W. Holcroft,
... The second mechanism, also related to the release of inflammatory mediators (either from infected tissue or from tissue that has undergone ischemia and reperfusion), arises from the contraction of actin and myosin filaments in the endothelial cells of the microvasculature, both at the site of infect ...
... The second mechanism, also related to the release of inflammatory mediators (either from infected tissue or from tissue that has undergone ischemia and reperfusion), arises from the contraction of actin and myosin filaments in the endothelial cells of the microvasculature, both at the site of infect ...
James M. Norton
... ventricular myocardial force necessary to overcome opposition to ventricular ejection. In the clinical setting, as a rough index, it is frequently related to aortic pressure.” (p. 177) ...
... ventricular myocardial force necessary to overcome opposition to ventricular ejection. In the clinical setting, as a rough index, it is frequently related to aortic pressure.” (p. 177) ...
The Cardiovascular System: The Heart
... blood is carried by the pulmonary veins back to the left side of the heart. Notice how unique this circulation is. Elsewhere in the body, veins carry relatively oxygen-poor blood to the heart, and arteries transport oxygen-rich blood from the heart. Exactly the opposite oxygenation conditions exist ...
... blood is carried by the pulmonary veins back to the left side of the heart. Notice how unique this circulation is. Elsewhere in the body, veins carry relatively oxygen-poor blood to the heart, and arteries transport oxygen-rich blood from the heart. Exactly the opposite oxygenation conditions exist ...
Full PDF - IOSR journals
... B. Number of heads of papillary muscles Anterior papillary muscle: 1 head – 63.2 %; 2 heads – 16.5 %.; 3 heads – 12.7%; 4 heads – 7.6 %. Posterior papillary muscle: 1 head – 25.4%; 2 heads – 46.8%; 3 heads21.5%; 4 heads-6.3%. In 2004, Aktas EO et al [16] studied on variations in the papillary muscle ...
... B. Number of heads of papillary muscles Anterior papillary muscle: 1 head – 63.2 %; 2 heads – 16.5 %.; 3 heads – 12.7%; 4 heads – 7.6 %. Posterior papillary muscle: 1 head – 25.4%; 2 heads – 46.8%; 3 heads21.5%; 4 heads-6.3%. In 2004, Aktas EO et al [16] studied on variations in the papillary muscle ...
Recommendations for the Evaluation of Left Ventricular Diastolic
... for the maximum time for LV filling. This theoretically optimal situation is approached by the cyclic interaction of myofilaments and assumes competent mitral and aortic valves. Diastole starts at aortic valve closure and includes LV pressure fall, rapid filling, diastasis (at slower heart rates), a ...
... for the maximum time for LV filling. This theoretically optimal situation is approached by the cyclic interaction of myofilaments and assumes competent mitral and aortic valves. Diastole starts at aortic valve closure and includes LV pressure fall, rapid filling, diastasis (at slower heart rates), a ...
Case-Based Curriculum in Clinical Electrophysiology
... in a patient with an unusual accessory pathway that mimicked RV outflow tract VT due to its unusual location.39 In their Teaching Points presentation Thajudeen and coworkers demonstrate these principles in a patient with multiple accessory pathways with antidromic AV reentry and orthodromic tachycar ...
... in a patient with an unusual accessory pathway that mimicked RV outflow tract VT due to its unusual location.39 In their Teaching Points presentation Thajudeen and coworkers demonstrate these principles in a patient with multiple accessory pathways with antidromic AV reentry and orthodromic tachycar ...
Valentin Fuster and Sidney C. Smith, Jr Joseph S. Alpert, Gabriel
... Science Advisory and Coordinating Committee in August 2002, and the North American Society for Pacing and Electrophysiology in August 2002. The ACC/AHA Task Force on Practice Guidelines makes every effort to avoid any actual or potential conflicts of interest that might arise as a result of an outsi ...
... Science Advisory and Coordinating Committee in August 2002, and the North American Society for Pacing and Electrophysiology in August 2002. The ACC/AHA Task Force on Practice Guidelines makes every effort to avoid any actual or potential conflicts of interest that might arise as a result of an outsi ...
ROLE OF ANAHATA CHAKRA AND CARDIAC PLEXUS IN
... centres aligned along the spinal cord. They resemble funnel shaped blossoms each possessing a different number of petals. The petals of the blossoms represent Nadis or energy channels through which energy is able to flow 6 into the Chakra where it is then conveyed to the subtle bodies. In Sanskrit, ...
... centres aligned along the spinal cord. They resemble funnel shaped blossoms each possessing a different number of petals. The petals of the blossoms represent Nadis or energy channels through which energy is able to flow 6 into the Chakra where it is then conveyed to the subtle bodies. In Sanskrit, ...
ACLS Rhythms for the ACLS Algorithms
... “atrial fibrillation with rapid ventricular response” ➔ DOE, SOB, acute pulmonary edema ■ Loss of “atrial kick” may lead to drop in cardiac output and decreased coronary perfusion ■ Irregular rhythm often perceived as “palpitations” ...
... “atrial fibrillation with rapid ventricular response” ➔ DOE, SOB, acute pulmonary edema ■ Loss of “atrial kick” may lead to drop in cardiac output and decreased coronary perfusion ■ Irregular rhythm often perceived as “palpitations” ...
EAE/ASE recommendations for clinical practice
... Recommendation for clinical application: (1) appropriate in all patients with AS (yellow); (2) reasonable when additional information is needed in selected patients (green); and (3) not recommended for clinical use (blue). VR, velocity ratio; TVI, time–velocity integral; LVOT, LV outflow tract; AS, A ...
... Recommendation for clinical application: (1) appropriate in all patients with AS (yellow); (2) reasonable when additional information is needed in selected patients (green); and (3) not recommended for clinical use (blue). VR, velocity ratio; TVI, time–velocity integral; LVOT, LV outflow tract; AS, A ...
Echocardiographic assessment of valve stenosis
... Recommendation for clinical application: (1) appropriate in all patients with AS (yellow); (2) reasonable when additional information is needed in selected patients (green); and (3) not recommended for clinical use (blue). VR, velocity ratio; TVI, time–velocity integral; LVOT, LV outflow tract; AS, A ...
... Recommendation for clinical application: (1) appropriate in all patients with AS (yellow); (2) reasonable when additional information is needed in selected patients (green); and (3) not recommended for clinical use (blue). VR, velocity ratio; TVI, time–velocity integral; LVOT, LV outflow tract; AS, A ...
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.