Indications for Pacing and Mode Selection
... class II or III CHF and a measured LVEF < 0.35 (SCD-HeFT) Patients with non-ischemic dilated cardiomyopathy > nine months, NYHA class II or III CHF and a measured LVEF < 0.35 (SCD-HeFT) ...
... class II or III CHF and a measured LVEF < 0.35 (SCD-HeFT) Patients with non-ischemic dilated cardiomyopathy > nine months, NYHA class II or III CHF and a measured LVEF < 0.35 (SCD-HeFT) ...
Thoraco-Omphalopagus conjoined 284
... was observed in only three cases of all 1262 twins. The present case had a triple-outlet connection from the left ventricle; two aorta and one pulmonary artery were visualized as connecting the left ventricle. Spitz et al. (2) classified management of 17 conjoined twins in three distinct categories. ...
... was observed in only three cases of all 1262 twins. The present case had a triple-outlet connection from the left ventricle; two aorta and one pulmonary artery were visualized as connecting the left ventricle. Spitz et al. (2) classified management of 17 conjoined twins in three distinct categories. ...
Early mitral deceleration and left atrial stiffness - AJP
... measurements of the mitral valve flow velocity were then obtained using a pulse repetition rate of 4.5 kHz, with the Doppler beam aligned perpendicular to and bisecting the plane of the mitral anulus and with the 3-mm-wide sample volume placed at the level of the anulus, together with synchronized L ...
... measurements of the mitral valve flow velocity were then obtained using a pulse repetition rate of 4.5 kHz, with the Doppler beam aligned perpendicular to and bisecting the plane of the mitral anulus and with the 3-mm-wide sample volume placed at the level of the anulus, together with synchronized L ...
Value of an Exercise Workload ≥10 Metabolic Equivalents
... has increased, whereas the number of myocardial perfusion imaging studies has decreased.1 One possible explanation for this finding is concern about radiation. Although ExE may evaluate functional capacity and ischemia in a single test, the relationship between these 2 variables is controversial bec ...
... has increased, whereas the number of myocardial perfusion imaging studies has decreased.1 One possible explanation for this finding is concern about radiation. Although ExE may evaluate functional capacity and ischemia in a single test, the relationship between these 2 variables is controversial bec ...
ACR-NASCI-SPR Practice Parameter for the Performance and
... medical physicists in the United States. The College is a nonprofit professional society whose primary purposes are to advance the science of radiology, improve radiologic services to the patient, study the socioeconomic aspects of the practice of radiology, and encourage continuing education for ra ...
... medical physicists in the United States. The College is a nonprofit professional society whose primary purposes are to advance the science of radiology, improve radiologic services to the patient, study the socioeconomic aspects of the practice of radiology, and encourage continuing education for ra ...
Embryology - Conotruncal development
... Inversion of conotruncus- 2 stages Stage1 – Inversion of ostium bulbi at same time of looping Stage 2- Rotation of truncus which occurs after the formation of septum aortopulmonale. Ostium bulbar rotation causes the anatomic concordance between the left ventricle and the proximal aortic conus T ...
... Inversion of conotruncus- 2 stages Stage1 – Inversion of ostium bulbi at same time of looping Stage 2- Rotation of truncus which occurs after the formation of septum aortopulmonale. Ostium bulbar rotation causes the anatomic concordance between the left ventricle and the proximal aortic conus T ...
Physiological changes in pregnancy
... an increase in right-to-left intracardiac shunting, leading to increased cyanosis and hypoxemia. As another example, changes in renal blood flow impacting on drug excretion and changes in the volume of distribution of drugs together explain in large part the need for modified drug dosing during preg ...
... an increase in right-to-left intracardiac shunting, leading to increased cyanosis and hypoxemia. As another example, changes in renal blood flow impacting on drug excretion and changes in the volume of distribution of drugs together explain in large part the need for modified drug dosing during preg ...
PhVWP BEST PRACTICE GUIDE FOR WORK SHARING
... may be beneficial in reversing the effects of calcium channel blockade. Gastric lavage may be worthwhile in some cases. In healthy volunteers the use of charcoal up to 2 hours after administration of amlodipine 10 mg has been shown to reduce the absorption rate of amlodipine. Since amlodipine is hig ...
... may be beneficial in reversing the effects of calcium channel blockade. Gastric lavage may be worthwhile in some cases. In healthy volunteers the use of charcoal up to 2 hours after administration of amlodipine 10 mg has been shown to reduce the absorption rate of amlodipine. Since amlodipine is hig ...
Cardiac Rehabilitation
... growth in quantity has not been matched by improvements in quality. Programmes tend to be inadequately resourced and do not adhere to national guidelines.25 A survey of Scottish outpatient cardiac rehabilitation programmes in 1994 found that although most offered exercise, relaxation and education, ...
... growth in quantity has not been matched by improvements in quality. Programmes tend to be inadequately resourced and do not adhere to national guidelines.25 A survey of Scottish outpatient cardiac rehabilitation programmes in 1994 found that although most offered exercise, relaxation and education, ...
Published Version
... RHTN. Whilst the procedural adverse event rates in these pilot COPD trials are notable (and includes ipsilateral lower limb oedema (67 %), venous stenosis (47 %), right heart failure (27 %) and deep venous thrombosis (27 %)), they cannot simply be translated to other patient groups with current devi ...
... RHTN. Whilst the procedural adverse event rates in these pilot COPD trials are notable (and includes ipsilateral lower limb oedema (67 %), venous stenosis (47 %), right heart failure (27 %) and deep venous thrombosis (27 %)), they cannot simply be translated to other patient groups with current devi ...
Investigation of syncope
... rather than afterwards or at rest. There is frequently a rapid recovery. Palpitations are frequently not reported. 2. Orthostatic syncope: this occurs with an absolute or regional deficiency in intravascular volume as a result of volume depletion or loss of vasopressor reflexes, respectively. This m ...
... rather than afterwards or at rest. There is frequently a rapid recovery. Palpitations are frequently not reported. 2. Orthostatic syncope: this occurs with an absolute or regional deficiency in intravascular volume as a result of volume depletion or loss of vasopressor reflexes, respectively. This m ...
ACR-NASCI-SPR Practice Parameter for the Performance and
... medical physicists in the United States. The College is a nonprofit professional society whose primary purposes are to advance the science of radiology, improve radiologic services to the patient, study the socioeconomic aspects of the practice of radiology, and encourage continuing education for ra ...
... medical physicists in the United States. The College is a nonprofit professional society whose primary purposes are to advance the science of radiology, improve radiologic services to the patient, study the socioeconomic aspects of the practice of radiology, and encourage continuing education for ra ...
File - Respiratory Therapy Files
... S, the tracing reaches baseline… this is known as the J point… ...
... S, the tracing reaches baseline… this is known as the J point… ...
New Perspectives in Cardiac Arrest Management - Amiodarone-IV
... Methods • Retrospective study of 38 ICU patients – Pts received IV amiodarone for resistant atrial tachyarrhythmias • Onset of rapid heart rate (mean 149 ± 13 beats/min was associated with decrease in systolic blood pressure of 20 ± 5 mm Hg (P<0.05) ...
... Methods • Retrospective study of 38 ICU patients – Pts received IV amiodarone for resistant atrial tachyarrhythmias • Onset of rapid heart rate (mean 149 ± 13 beats/min was associated with decrease in systolic blood pressure of 20 ± 5 mm Hg (P<0.05) ...
Perioperative Cardiovascular Evaluation: Is There a
... Perioperative cardiovascular complications resulting from non-cardiac surgery are an important cause of morbidity and mortality. Using a step-wise approach and selective cardiac testing, those at highest risk of cardiovascular complications can be identified and offered medical therapy and revascula ...
... Perioperative cardiovascular complications resulting from non-cardiac surgery are an important cause of morbidity and mortality. Using a step-wise approach and selective cardiac testing, those at highest risk of cardiovascular complications can be identified and offered medical therapy and revascula ...
Potential effects of intrinsic heart pacemaker cell mechanisms on
... mechanisms to pacemaker cells and the degree of synchronization among pacemaker cells within the SAN are determinants of the heart rate and rhythm. Autonomic receptors on pacemaker cells respond to the imbalances of autonomic impulses associated with cardiac diseases. Specifically, autonomic recepto ...
... mechanisms to pacemaker cells and the degree of synchronization among pacemaker cells within the SAN are determinants of the heart rate and rhythm. Autonomic receptors on pacemaker cells respond to the imbalances of autonomic impulses associated with cardiac diseases. Specifically, autonomic recepto ...
Embryonic Heart Failure in NFATc1 / Mice
... Imaging Protocols and Doppler Waveform and UBM Image Analysis We first sought to characterize middorsal aortic blood flow from E10.5 to E13.5 and collected data from 383 embryos. As we developed facility with imaging litters, we also undertook, in a second protocol, to concurrently characterize dors ...
... Imaging Protocols and Doppler Waveform and UBM Image Analysis We first sought to characterize middorsal aortic blood flow from E10.5 to E13.5 and collected data from 383 embryos. As we developed facility with imaging litters, we also undertook, in a second protocol, to concurrently characterize dors ...
Experiment AM-6: Frog Electrocardiogram
... Figure AM-6-B2: Diagram of a typical frog ECG with P and T, and the QRS complex identified. If the beginning of the cardiac cycle is taken as the contraction of the sinus venosus, the contraction of the various sections of the heart follows the path of the electrical signal that spreads over the hea ...
... Figure AM-6-B2: Diagram of a typical frog ECG with P and T, and the QRS complex identified. If the beginning of the cardiac cycle is taken as the contraction of the sinus venosus, the contraction of the various sections of the heart follows the path of the electrical signal that spreads over the hea ...
Stroke volume increase to exercise in chronic - VU-DARE
... results together with earlier studies showed that COPD patients have a reduced SV at rest.1 However, SV at rest was similar between controls and COPD patients when indexed for body surface area (41 (10) ml vs 34 (7) ml, p = 0.14, respectively). In addition, exercise leads to a rapid increase in pulm ...
... results together with earlier studies showed that COPD patients have a reduced SV at rest.1 However, SV at rest was similar between controls and COPD patients when indexed for body surface area (41 (10) ml vs 34 (7) ml, p = 0.14, respectively). In addition, exercise leads to a rapid increase in pulm ...
ABIOMED | Impella now approved for cardiogenic shock
... Inotropes and vasopressors increase the myocardial oxygen consumption (MVO2). By increasing both contractility and afterload, they increase myocardial oxygen demand and mechanical work in an already compromised ventrical. Vasopressors cause vasoconstriction and thereby elevate MAP. However, many dru ...
... Inotropes and vasopressors increase the myocardial oxygen consumption (MVO2). By increasing both contractility and afterload, they increase myocardial oxygen demand and mechanical work in an already compromised ventrical. Vasopressors cause vasoconstriction and thereby elevate MAP. However, many dru ...
Word Version - Student Blogs - The University of Edinburgh
... There is also evidence that elevated cTnI levels can indicate the presence of PE in undiagnosed cases, for example in Askay et al’s paper, [9] 42% of PE patients had increased cTnI concentrations and in another paper presented by Pruszcyk et al, it was found that in 50% of the 64 cases investigated, ...
... There is also evidence that elevated cTnI levels can indicate the presence of PE in undiagnosed cases, for example in Askay et al’s paper, [9] 42% of PE patients had increased cTnI concentrations and in another paper presented by Pruszcyk et al, it was found that in 50% of the 64 cases investigated, ...
Implantable Cardioverter Defibrillators
... a) Ischemic cardiomyopathy with New York Heart Association (NYHA) functional class II or class III symptoms, a history of myocardial infarction at least 40 days before ICD treatment, and left ventricular ejection fraction of 35% or less; or b) Ischemic cardiomyopathy with NYHA functional class I sym ...
... a) Ischemic cardiomyopathy with New York Heart Association (NYHA) functional class II or class III symptoms, a history of myocardial infarction at least 40 days before ICD treatment, and left ventricular ejection fraction of 35% or less; or b) Ischemic cardiomyopathy with NYHA functional class I sym ...
File
... The Pulmonary and Systemic Circuits • Heart is transport system; two side-by-side pumps – Right side receives oxygen-poor blood from tissues • Pumps to lungs to get rid of CO2, pick up O2, via pulmonary circuit ...
... The Pulmonary and Systemic Circuits • Heart is transport system; two side-by-side pumps – Right side receives oxygen-poor blood from tissues • Pumps to lungs to get rid of CO2, pick up O2, via pulmonary circuit ...
Natural History and Prognosis of Atrial Septal Defect
... U.S. Public Health Service. This comparison is shown in table 2. It is seen that the drop-off of the figures for patients older than 50 years in this series is not shared by normal individuals, the statistical significance of this difference being of the order of less than 1 in 1,000. In order to re ...
... U.S. Public Health Service. This comparison is shown in table 2. It is seen that the drop-off of the figures for patients older than 50 years in this series is not shared by normal individuals, the statistical significance of this difference being of the order of less than 1 in 1,000. In order to re ...
Complex inheritance for susceptibility to sudden cardiac death
... utes of occlusion also occurs in human, but it is considered likely to be with a retarded time course. It has been proposed that during phase 1a, two different mechanisms are involved in development of arrhythmias. A reentrant excitation causes VF and VT while a non-reentrant mechanism causes prema ...
... utes of occlusion also occurs in human, but it is considered likely to be with a retarded time course. It has been proposed that during phase 1a, two different mechanisms are involved in development of arrhythmias. A reentrant excitation causes VF and VT while a non-reentrant mechanism causes prema ...
Cardiac contractility modulation
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Cardiac contractility modulation (CCM) is a treatment for patients with moderate to severe left ventricular systolic heart failure (NYHA class II–IV). The short- and long-term use of this therapy enhances both the strength of ventricular contraction and the heart’s pumping capacity. The CCM mechanism is based on stimulation of the cardiac muscle by non-excitatory electrical signals (NES). CCM treatment is delivered by a pacemaker-like device that applies the NES, adjusted to and synchronized with the electrical action in the cardiac cycle.In CCM therapy, electrical stimulation is applied to the cardiac muscle during the absolute refractory period. In this phase of the cardiac cycle, electrical signals cannot trigger new cardiac muscle contractions, hence this type of stimulation is known as a non-excitatory stimulation. However, the electrical CCM signals increase the influx of calcium ions into the cardiac muscle cells (cardiomyocytes). In contrast to other electrical stimulation treatments for heart failure, such as pacemaker therapy or implantable cardioverter defibrillators (ICD), CCM does not affect the cardiac rhythm directly. Rather, the aim is to enhance the heart’s natural contraction (the native cardiac contractility) sustainably over long periods of time. Furthermore, unlike most interventions that increase cardiac contractility, CCM is not associated with an unfavorable increase in oxygen demand by the heart (measured in terms of Myocardial Oxygen Consumption or MVO2). This may be explained by the beneficial effect CCM has in improving cardiac efficiency. A meta-analysis in 2014 and an overview of device-based treatment options in heart failure in 2013 concluded that CCM treatment is safe, that it is generally beneficial to patients and that CCM treatment increases the exercise tolerance (ET) and quality of life (QoL) of patients. Furthermore, preliminary long-term survival data shows that CCM is associated with lower long-term mortality in heart failure patients when compared with expected rates among similar patients not treated with CCM.