Structure and Function of the Developing Zebrafish Heart
... The cardiovascular system appears when needs for oxygen and nutrition cannot be met by diffusion alone, because of the volume or increased metabolic rate of an organism (Burggren and Pinder, 1991; Pelster and Burggren, 1996). As such, during the course of embryogenesis, the heart is the first defini ...
... The cardiovascular system appears when needs for oxygen and nutrition cannot be met by diffusion alone, because of the volume or increased metabolic rate of an organism (Burggren and Pinder, 1991; Pelster and Burggren, 1996). As such, during the course of embryogenesis, the heart is the first defini ...
Arrhythmias
... • The rhythm is irregular and rapid (approx. 140 – 150 beats per minute) • Q is usually d by 10% to 20% (no atrial “kick” to ventricular filling) • May be seen in CAD (especially following surgery), mitral valve stenosis, LV hypertrophy, CHF • Treatment: DC cardioversion & O2 if patient is unstable ...
... • The rhythm is irregular and rapid (approx. 140 – 150 beats per minute) • Q is usually d by 10% to 20% (no atrial “kick” to ventricular filling) • May be seen in CAD (especially following surgery), mitral valve stenosis, LV hypertrophy, CHF • Treatment: DC cardioversion & O2 if patient is unstable ...
Coexistence of sudden cardiac death and end-stage heart
... National Heart, Lung, and Blood Institute, were selected for the present study on the basis of the following criteria : 1) hypertrophic cardiomyopathy was documented in relatives in two or more generations ; 2) at least one relative had died suddenly and prematurely (i .e ., before age 40 years) of ...
... National Heart, Lung, and Blood Institute, were selected for the present study on the basis of the following criteria : 1) hypertrophic cardiomyopathy was documented in relatives in two or more generations ; 2) at least one relative had died suddenly and prematurely (i .e ., before age 40 years) of ...
Atrial Septal Defect
... Ostium secundum atrial septal defects are by far the most common and are occasionally familial. There is a higher incidence in females, and about 20 percent of patients have associated mitral valve prolapse. Anomalous return of a right upper lobe pulmonary vein to the superior vena cava occurs in mo ...
... Ostium secundum atrial septal defects are by far the most common and are occasionally familial. There is a higher incidence in females, and about 20 percent of patients have associated mitral valve prolapse. Anomalous return of a right upper lobe pulmonary vein to the superior vena cava occurs in mo ...
Association between left ventricular hypertrophy
... predictor for extracardiac TODs in essential HTN.(13) In fact, some of the previous reports revealed that there is a significant association between different types of TOD in hypertensive populations.(14-16) Unfortunately, discordant conclusions on this matter emphasise the need for further investig ...
... predictor for extracardiac TODs in essential HTN.(13) In fact, some of the previous reports revealed that there is a significant association between different types of TOD in hypertensive populations.(14-16) Unfortunately, discordant conclusions on this matter emphasise the need for further investig ...
Document
... • Inferior venous orifices more posterior than the superior • RUPV passes behind the junction between the right atrium and the SCV • RLPV passes behind the intercaval area • Left lateral ridge between the appendage and the left pulmonary veins (can be mistaken for a thrombus or atrial mass) ...
... • Inferior venous orifices more posterior than the superior • RUPV passes behind the junction between the right atrium and the SCV • RLPV passes behind the intercaval area • Left lateral ridge between the appendage and the left pulmonary veins (can be mistaken for a thrombus or atrial mass) ...
030814 Acute Cardiac Tamponade - Ether
... ardiac tamponade is life-threatening, slow or rapid compression of the heart due to the pericardial accumulation of fluid, pus, blood, clots, or gas, as a result of effusion, trauma, or rupture of the heart.1,2 Because the causes of pericardial disease1 and thus of tamponade are diverse, clinicians ...
... ardiac tamponade is life-threatening, slow or rapid compression of the heart due to the pericardial accumulation of fluid, pus, blood, clots, or gas, as a result of effusion, trauma, or rupture of the heart.1,2 Because the causes of pericardial disease1 and thus of tamponade are diverse, clinicians ...
Recommendations for exercise training in chronic heart failure patients
... on morbidity and mortality in this patient population is limited[28]. Given that both the inability to increase cardiac output during exercise and a reduction in peak VO2 are associated with haemodynamic dysfunction and poor short-term survival, one might speculate that an intervention capable of im ...
... on morbidity and mortality in this patient population is limited[28]. Given that both the inability to increase cardiac output during exercise and a reduction in peak VO2 are associated with haemodynamic dysfunction and poor short-term survival, one might speculate that an intervention capable of im ...
Ejection Fraction by Radionuclide Angiocardiography
... the area-length method6 and LV ejection fraction calculated.7"10 More recently, it has been suggested that ejection fraction can be obtained in a different manner by analysis of time-activity curves generated during the passage of the radionuclide bolus through the left ventricle."-"4 Assuming compl ...
... the area-length method6 and LV ejection fraction calculated.7"10 More recently, it has been suggested that ejection fraction can be obtained in a different manner by analysis of time-activity curves generated during the passage of the radionuclide bolus through the left ventricle."-"4 Assuming compl ...
Advantages of PET Myocardial Imaging
... PARR-2 Trial. JACC Cardiovascular Imaging 2009; 2(9) 20. 2013 ACCF/ACR/ASE/ASNC/SCCT/SCMR Appropriate Utilization of Cardiovascular Imaging in Heart Failure. J Am Coll Cardiol 2013; 61(21) 21. Ziadi M, et al. Impaired Myocardial Flow Reserve on Rubidium-82 Positron Emission Tomography Imaging Predic ...
... PARR-2 Trial. JACC Cardiovascular Imaging 2009; 2(9) 20. 2013 ACCF/ACR/ASE/ASNC/SCCT/SCMR Appropriate Utilization of Cardiovascular Imaging in Heart Failure. J Am Coll Cardiol 2013; 61(21) 21. Ziadi M, et al. Impaired Myocardial Flow Reserve on Rubidium-82 Positron Emission Tomography Imaging Predic ...
Utility of B-Type Natriuretic Peptide in Predicting
... number of bypass grafts was 2.3 ⫾ 1.3. Dopamine and/or epinephrine was infused in almost half of the study group. Lidocaine infusion was necessary for seven patients. The average postoperative hospital stay was 8.7 ⫾ 11.0 days. Thirty-two patients had some cardiac events, most of which were new post ...
... number of bypass grafts was 2.3 ⫾ 1.3. Dopamine and/or epinephrine was infused in almost half of the study group. Lidocaine infusion was necessary for seven patients. The average postoperative hospital stay was 8.7 ⫾ 11.0 days. Thirty-two patients had some cardiac events, most of which were new post ...
Use and impact of intra-aortic balloon pump on
... A recent meta-analysis of randomised trials and registries found contrasting results of the IABP in patients with STEMI complicated by cardiogenic shock6. In randomised trials the mortality tended to be lower with IABP in patients with fibrinolysis and without reperfusion therapy, while in registrie ...
... A recent meta-analysis of randomised trials and registries found contrasting results of the IABP in patients with STEMI complicated by cardiogenic shock6. In randomised trials the mortality tended to be lower with IABP in patients with fibrinolysis and without reperfusion therapy, while in registrie ...
Pathophysiology and Therapy for Atrial Septal Defects
... up to 18 mm in diameter.23,24 The most common site of device erosion is at the roof of the RA or LA. A recent study reported that 50% occurred within 1 week, an additional 11% up to 1 month, 26% from 1 month to 1 year, and a disturbing 13% between 1 and 9 years.25 The most common risk factors for de ...
... up to 18 mm in diameter.23,24 The most common site of device erosion is at the roof of the RA or LA. A recent study reported that 50% occurred within 1 week, an additional 11% up to 1 month, 26% from 1 month to 1 year, and a disturbing 13% between 1 and 9 years.25 The most common risk factors for de ...
Extracorporeal membrane oxygenation support after pediatric
... aortic cross-clamp time and CPB time during surgery were 74.1±21.6 min and 127.6±51.9 min, respectively. The mean duration of ECMO support was 6.9 days (range 14 hours to 32 days). Complications during ECMO included renal insufficiency requiring additional hemofiltration or dialysis in 14 (48%), ble ...
... aortic cross-clamp time and CPB time during surgery were 74.1±21.6 min and 127.6±51.9 min, respectively. The mean duration of ECMO support was 6.9 days (range 14 hours to 32 days). Complications during ECMO included renal insufficiency requiring additional hemofiltration or dialysis in 14 (48%), ble ...
Cardiac Output - Interactive Physiology
... increases the heart rate. It also increases stroke volume by increasing contractility, which results i n more complete ejection of blood from the heart (lower ESV). • Increased Parasympathetic Stimulation - Parasympathetic activity increases after a crisis has passed. This reduces heart rate and str ...
... increases the heart rate. It also increases stroke volume by increasing contractility, which results i n more complete ejection of blood from the heart (lower ESV). • Increased Parasympathetic Stimulation - Parasympathetic activity increases after a crisis has passed. This reduces heart rate and str ...
Hemiplegia and the billowing mitral leaflet syndrome
... enhance a thrombotic tendency, and would contribute to the process of embolisation. The role of ventricular asynergy is obscure. Mitral regurgitation with left atrial enlargement does not appear to play a significant role in these patients. In view of the possibility of recurrent embolic episodes, t ...
... enhance a thrombotic tendency, and would contribute to the process of embolisation. The role of ventricular asynergy is obscure. Mitral regurgitation with left atrial enlargement does not appear to play a significant role in these patients. In view of the possibility of recurrent embolic episodes, t ...
full text pdf
... kidney damage, abnormal thyroid function tests, NYHA class ≥ III heart failure, myocardial infarction during last 6 months, serum potassium ≤ 3.8 or ≥ 5.5 mmol/l, cardiac pacing, Wolff-Parkinson-White syndrome, current atrial fibrillation or flutter, QRS duration ≥ 120 ms or uninterpretable T-wave a ...
... kidney damage, abnormal thyroid function tests, NYHA class ≥ III heart failure, myocardial infarction during last 6 months, serum potassium ≤ 3.8 or ≥ 5.5 mmol/l, cardiac pacing, Wolff-Parkinson-White syndrome, current atrial fibrillation or flutter, QRS duration ≥ 120 ms or uninterpretable T-wave a ...
MS Word Version - Interactive Physiology
... increases the heart rate. It also increases stroke volume by increasing contractility, which results in more complete ejection of blood from the heart (lower ESV). • Increased Parasympathetic Stimulation - Parasympathetic activity increases after a crisis has passed. This reduces heart rate and stro ...
... increases the heart rate. It also increases stroke volume by increasing contractility, which results in more complete ejection of blood from the heart (lower ESV). • Increased Parasympathetic Stimulation - Parasympathetic activity increases after a crisis has passed. This reduces heart rate and stro ...
02.Heart_Arrythmias_2
... • The rhythm is irregular and rapid (approx. 140 – 150 beats per minute) • Q is usually d by 10% to 20% (no atrial “kick” to ventricular filling) • May be seen in CAD (especially following surgery), mitral valve stenosis, LV hypertrophy, CHF • Treatment: DC cardioversion & O2 if patient is unstable ...
... • The rhythm is irregular and rapid (approx. 140 – 150 beats per minute) • Q is usually d by 10% to 20% (no atrial “kick” to ventricular filling) • May be seen in CAD (especially following surgery), mitral valve stenosis, LV hypertrophy, CHF • Treatment: DC cardioversion & O2 if patient is unstable ...
F-18-Fluorodeoxyglucose Positron Emission Tomography
... In each set, the top panels are the raw perfusion (left) and raw F-18-fluorodeoxyglucose (FDG) uptake (right) polar maps; the middle panels are the normalized perfusion (left) and FDG uptake (right); the lowest panels are the scar score (left) and mismatch score (right); color scale in the lower pan ...
... In each set, the top panels are the raw perfusion (left) and raw F-18-fluorodeoxyglucose (FDG) uptake (right) polar maps; the middle panels are the normalized perfusion (left) and FDG uptake (right); the lowest panels are the scar score (left) and mismatch score (right); color scale in the lower pan ...
Feature Extraction for Detection of Ventricular Tachycardia and
... it is very important to detect features that can be used to differentiate between the two for reliable design of an arrhythmia detecting system. The detection of this cardiac arrhythmia is difficult because the waveform of these life threatening arrhythmias changes with time. If the system is not ab ...
... it is very important to detect features that can be used to differentiate between the two for reliable design of an arrhythmia detecting system. The detection of this cardiac arrhythmia is difficult because the waveform of these life threatening arrhythmias changes with time. If the system is not ab ...
Cardiac contractility modulation
.jpg?width=300)
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.