Structure of heart rate asymmetry: deceleration and acceleration runs
... 3. Materials and methods 3.1. Materials The group consisted of eighty-seven 24 h Holter recordings from healthy subjects (41 men); the mean age was 35 ± 7.4 years. The participants were healthy volunteers who underwent careful history taking, physical examination and resting 12-lead ECG. They were a ...
... 3. Materials and methods 3.1. Materials The group consisted of eighty-seven 24 h Holter recordings from healthy subjects (41 men); the mean age was 35 ± 7.4 years. The participants were healthy volunteers who underwent careful history taking, physical examination and resting 12-lead ECG. They were a ...
Living anatomy of the atrioventricular junctions
... preexcitation are similarly difficult to explain logically when current nomenclature is taken literally. Thus, for the beginner, it is unclear why a presumed ‘posterior’ accessory connection should produce negative delta waves in the inferior leads. When posterior is translated to inferior, then the ...
... preexcitation are similarly difficult to explain logically when current nomenclature is taken literally. Thus, for the beginner, it is unclear why a presumed ‘posterior’ accessory connection should produce negative delta waves in the inferior leads. When posterior is translated to inferior, then the ...
Basic Pharmacology of Bradykinin Receptor Agonists
... Kinins are potent vasorelaxant polypeptides located in the vascular smooth muscle as well as in the heart. A number of observations obtained from clinical and experimental models of hypertension, cardiac failure, ischaemia, myocardial infarction and left ventricular hypertrophy, have suggested that ...
... Kinins are potent vasorelaxant polypeptides located in the vascular smooth muscle as well as in the heart. A number of observations obtained from clinical and experimental models of hypertension, cardiac failure, ischaemia, myocardial infarction and left ventricular hypertrophy, have suggested that ...
Print - Circulation
... dealing with the tissue catechol amine concentration of animal hearts.20-24 The only multiple case studies of the tissue catechol amine concentration in human hearts are reported in the papers by Holtz, Kroneberg and Schumannll25; Raab and Gigee,26 and Raab.27 Direct quantitative comparisons between ...
... dealing with the tissue catechol amine concentration of animal hearts.20-24 The only multiple case studies of the tissue catechol amine concentration in human hearts are reported in the papers by Holtz, Kroneberg and Schumannll25; Raab and Gigee,26 and Raab.27 Direct quantitative comparisons between ...
Lymphatics of the Heart
... ing channels through the myocardium have not been demonstrated. Lymphatics in the AV valve annuli have not been identified but there is some evidence that they exist and they are seen easily in dogs and pigs. There has been some question about the presence of lymphatics in valves, especially the mit ...
... ing channels through the myocardium have not been demonstrated. Lymphatics in the AV valve annuli have not been identified but there is some evidence that they exist and they are seen easily in dogs and pigs. There has been some question about the presence of lymphatics in valves, especially the mit ...
Despite the many decades of intensive research, left ventricular
... remodeling of the heart in several models of left ventricular hypertrophy. The aim of the present study was to determine whether treatment with spironolactone can prevent hypertension, reduction of tissue nitric oxide synthase activity and left ventricular (LV) and aortic remodeling in NG-nitro–L-ar ...
... remodeling of the heart in several models of left ventricular hypertrophy. The aim of the present study was to determine whether treatment with spironolactone can prevent hypertension, reduction of tissue nitric oxide synthase activity and left ventricular (LV) and aortic remodeling in NG-nitro–L-ar ...
embryo 13, 171-185
... d) Examples of teratogens include rubella virus, thalidomide, RA (Accutane), alcohol, and insulin-dependent diabetes e) Heart defects are heterogeneous in origin and difficult to classify epidemiologically f) We are tracing genes that are responsible for many defects and they tend to be related to o ...
... d) Examples of teratogens include rubella virus, thalidomide, RA (Accutane), alcohol, and insulin-dependent diabetes e) Heart defects are heterogeneous in origin and difficult to classify epidemiologically f) We are tracing genes that are responsible for many defects and they tend to be related to o ...
Increased Myocardial Uptake of Dietary Fatty Acids Linked to
... In protocol B, 90 min after the start of meal intake, [11C]acetate (;185MBq) was administered intravenously over 30 s with dynamic list-mode PET acquisition for 30 min (18 3 10 s, 6 3 30 s, and 6 3 240 s) centered on the thoracoabdominal segment to determine cardiac perfusion and oxidative metabolic ...
... In protocol B, 90 min after the start of meal intake, [11C]acetate (;185MBq) was administered intravenously over 30 s with dynamic list-mode PET acquisition for 30 min (18 3 10 s, 6 3 30 s, and 6 3 240 s) centered on the thoracoabdominal segment to determine cardiac perfusion and oxidative metabolic ...
Time-dependent remodeling of transmural architecture underlying
... below the renal arteries, and a 1.0 –1.2 cm side-to-side anastomosis was constructed (22, 28) under general anesthesia described above. The abdomen was closed, and intravenous fluid and antibiotics were administered as needed. Patency of the shunt was evidenced by an audible murmur throughout the st ...
... below the renal arteries, and a 1.0 –1.2 cm side-to-side anastomosis was constructed (22, 28) under general anesthesia described above. The abdomen was closed, and intravenous fluid and antibiotics were administered as needed. Patency of the shunt was evidenced by an audible murmur throughout the st ...
Appropriateness Criteria for Stress Echocardiography
... for each indication is appropriate, uncertain, or inappropriate; they were provided the following definition of appropriateness: An appropriate imaging study is one in which the expected incremental information, combined with clinical judgment, exceeds the expected negative consequences* by a suffic ...
... for each indication is appropriate, uncertain, or inappropriate; they were provided the following definition of appropriateness: An appropriate imaging study is one in which the expected incremental information, combined with clinical judgment, exceeds the expected negative consequences* by a suffic ...
Atrial Fibrillation - Florida Veterinary Cardiology
... are at an increased risk of having a stroke. However, dogs with lone atrial fibrillation rarely show exercise intolerance or shortness of breath, and do not suffer from strokes, so treatment is rarely required. Their heart rate remains normal in most cases. However, in a pet with serious heart disea ...
... are at an increased risk of having a stroke. However, dogs with lone atrial fibrillation rarely show exercise intolerance or shortness of breath, and do not suffer from strokes, so treatment is rarely required. Their heart rate remains normal in most cases. However, in a pet with serious heart disea ...
Audio-Visual Based Recognition of Auscultatory Heart Sounds with
... and these results are shown in Figs. 4(a) and (b). Clear signal images for S1 and S2 can be seen; the amplitude of S1 is larger than that of S2 at the apex, while S1 and S2 are approximately the same amplitude at the LSB of the 4th rib. This is a typical heart sound described as a "lub-dup," and the ...
... and these results are shown in Figs. 4(a) and (b). Clear signal images for S1 and S2 can be seen; the amplitude of S1 is larger than that of S2 at the apex, while S1 and S2 are approximately the same amplitude at the LSB of the 4th rib. This is a typical heart sound described as a "lub-dup," and the ...
Lightning - awlsmedstudents.org
... those who appear dead is called “reverse-triage”. The reason for this reverse triage is due to the fact that those victims who are awake or at least breathing have survived the most immediate and potentially critical injury, which is concomitant cardiac and respiratory arrest. Those patients who are ...
... those who appear dead is called “reverse-triage”. The reason for this reverse triage is due to the fact that those victims who are awake or at least breathing have survived the most immediate and potentially critical injury, which is concomitant cardiac and respiratory arrest. Those patients who are ...
Introduction to Data Communication Networks - DSpace
... the transmitter (located at the sending end of the telemetry system) via the signal transmission medium and recover the information from the same. It may perform one or more of the following functions: ...
... the transmitter (located at the sending end of the telemetry system) via the signal transmission medium and recover the information from the same. It may perform one or more of the following functions: ...
Chest Pain due to Atherosclerotic Coronary Artery
... artery, particularly during exercise leading to SCD or MI [4,9]. Roughly 15% of patients with a SCA might develop ischemia in those arteries due to this anatomic location relative to the pulmonary artery and the aorta, without having stenosis itself [10]. Therefore, in such cases surgery would be in ...
... artery, particularly during exercise leading to SCD or MI [4,9]. Roughly 15% of patients with a SCA might develop ischemia in those arteries due to this anatomic location relative to the pulmonary artery and the aorta, without having stenosis itself [10]. Therefore, in such cases surgery would be in ...
2013 ESC guidelines on the management of stable
... 8.1.2 Intracoronary assessment of stenosis severity (fractional flow reserve, intravascular ultrasound and optical coherence tomography) (see web addenda) . . . . . . . . . .2985 8.2 Coronary artery bypass surgery . . . . . . . . . . . . . . . . .2986 8.2.1 Arterial vs. venous grafts . . . . . . . . ...
... 8.1.2 Intracoronary assessment of stenosis severity (fractional flow reserve, intravascular ultrasound and optical coherence tomography) (see web addenda) . . . . . . . . . .2985 8.2 Coronary artery bypass surgery . . . . . . . . . . . . . . . . .2986 8.2.1 Arterial vs. venous grafts . . . . . . . . ...
Increases Left-to-Right Ventricular Systolic Interaction
... in the free walls, and the pericardium. It is useful to further subdivide anatomic mechanical interactions into those occurring during diastole and systole. Systolic ventricular interaction is especially important as a determinant of right heart function since it is known that a substantial portion ...
... in the free walls, and the pericardium. It is useful to further subdivide anatomic mechanical interactions into those occurring during diastole and systole. Systolic ventricular interaction is especially important as a determinant of right heart function since it is known that a substantial portion ...
Approach to Dextrocardia in Adults: Review
... ventricle. Growth of the conus also helps to form the infundibulum, separating the inflow and outflow regions of the right ventricle. With proper conal development, the pulmonary trunk twists around the ascending aorta as the now-anterior proximal right pulmonary artery arises from the anterior vent ...
... ventricle. Growth of the conus also helps to form the infundibulum, separating the inflow and outflow regions of the right ventricle. With proper conal development, the pulmonary trunk twists around the ascending aorta as the now-anterior proximal right pulmonary artery arises from the anterior vent ...
Usefulness of the 12-lead electrocardiogram in the follow
... implanted devices for cardiac resynchronization. A 12-lead ECG should always be available during device programming. A single-channel rhythm strip from a pacemaker programmer is inappropriate and may be misleading. During evaluation of cardiac resynchronization devices the 12-lead ECG yields importa ...
... implanted devices for cardiac resynchronization. A 12-lead ECG should always be available during device programming. A single-channel rhythm strip from a pacemaker programmer is inappropriate and may be misleading. During evaluation of cardiac resynchronization devices the 12-lead ECG yields importa ...
QT dispersion: time for an obituary?
... QT dispersion: time for an obituary? See page 1023 for the article to which this Editorial refers During the past decade, studies of QT dispersion[1] have become popular and numerous publications have reported some physiological and/or clinical value of QT dispersion measurement. Among others, incre ...
... QT dispersion: time for an obituary? See page 1023 for the article to which this Editorial refers During the past decade, studies of QT dispersion[1] have become popular and numerous publications have reported some physiological and/or clinical value of QT dispersion measurement. Among others, incre ...
VARIATION IN OSTIUM OF CORONARY ARTERIES
... systole and diastole of the heart and coronary blood flows continuously. So coronary insufficiency is less and also may have good prognostic value. Keywords: Right Coronary artery, Left Coronary artery, Ostium, Aortic sinus, Sinotubular junction INTRODUCTION Coronary arteries supply blood to the hea ...
... systole and diastole of the heart and coronary blood flows continuously. So coronary insufficiency is less and also may have good prognostic value. Keywords: Right Coronary artery, Left Coronary artery, Ostium, Aortic sinus, Sinotubular junction INTRODUCTION Coronary arteries supply blood to the hea ...
Estimation of maximal oxygen consumption and heart rate recovery
... (>16 y and <70 y) who performed a step test. VO2max was estimated from heart rate using three methods and the results compared. The magnitude of heart rate recovery (HRR) and the time constant of recovery based on different time intervals post-exercise were also estimated. Results: Estimated VO2max ...
... (>16 y and <70 y) who performed a step test. VO2max was estimated from heart rate using three methods and the results compared. The magnitude of heart rate recovery (HRR) and the time constant of recovery based on different time intervals post-exercise were also estimated. Results: Estimated VO2max ...
Strain Rate Imaging in Normal and Reduced Diastolic
... does the stretching and thinning of the wall (Figure 7). The propagation velocity of this stretching wave can be measured as shown in Figure 2. Propagation velocity of the E wave is consistently lower than that of the A wave.The E and A waves of the mitral annulus seen by pulsed DTI represent the re ...
... does the stretching and thinning of the wall (Figure 7). The propagation velocity of this stretching wave can be measured as shown in Figure 2. Propagation velocity of the E wave is consistently lower than that of the A wave.The E and A waves of the mitral annulus seen by pulsed DTI represent the re ...
Transcatheter Aortic Valve Implantation for Aortic Stenosis
... For individuals who have severe symptomatic aortic stenosis who are at prohibitive risk for open surgery who receive TAVI, the evidence includes one randomized controlled trial (RCT) comparing TAVI with medical management in individuals at prohibitive risk of surgery, and multiple case series. Relev ...
... For individuals who have severe symptomatic aortic stenosis who are at prohibitive risk for open surgery who receive TAVI, the evidence includes one randomized controlled trial (RCT) comparing TAVI with medical management in individuals at prohibitive risk of surgery, and multiple case series. Relev ...
Kainox VCS
... • Set the energy to a level not higher than is required to achieve defibrillation. • Place the paddles as far as possible away from the implanted device and lead system. • After delivery of an external defibrillation shock, interrogate the ICD to confirm device status and proper function. Lithotr ...
... • Set the energy to a level not higher than is required to achieve defibrillation. • Place the paddles as far as possible away from the implanted device and lead system. • After delivery of an external defibrillation shock, interrogate the ICD to confirm device status and proper function. Lithotr ...