Relationship of Number of Phases per Cardiac Cycle and Accuracy
... for a heart rate of 60 beats/min, ranged from 4.0 s (for the 8-phase acquisition) to 9.4 s (for the 20-phase acquisition), and correlated well with the number of phases (R2 =0.99, p <0.0001) (Fig. 1). For a heart rate of 60 beats/min, the various acquisitions would correspond to a temporal resolutio ...
... for a heart rate of 60 beats/min, ranged from 4.0 s (for the 8-phase acquisition) to 9.4 s (for the 20-phase acquisition), and correlated well with the number of phases (R2 =0.99, p <0.0001) (Fig. 1). For a heart rate of 60 beats/min, the various acquisitions would correspond to a temporal resolutio ...
Increased cardiac work provides a link between systemic
... fraction, end diastolic volume (EDV), end systolic volume (ESV), and stroke volume. Longitudinal and radial (both anterior-posterior and septal-lateral) fractional shortening were also calculated from the 3D models using customized software. In addition to the aforementioned indices, stroke work was ...
... fraction, end diastolic volume (EDV), end systolic volume (ESV), and stroke volume. Longitudinal and radial (both anterior-posterior and septal-lateral) fractional shortening were also calculated from the 3D models using customized software. In addition to the aforementioned indices, stroke work was ...
High-intensity focused ultrasound
... had the procedure did not have atrial fibrillation at 6 months follow-up. This result was found in 80% (for example, 80 people in 100) of patients who had permanent atrial fibrillation and in all the patients who had intermittent atrial fibrillation. The expert advisers said that the key issues on h ...
... had the procedure did not have atrial fibrillation at 6 months follow-up. This result was found in 80% (for example, 80 people in 100) of patients who had permanent atrial fibrillation and in all the patients who had intermittent atrial fibrillation. The expert advisers said that the key issues on h ...
Acute Coronary Syndromes - the Australian Resuscitation Council
... been shown to have increased sensitivity and become positive at an earlier time after onset of ischaemia when compared to conventional assays40-43. This supports their use in the diagnosis of AMI. These assays are able to determine the presence of a positive biomarker reliably at 2 hours19,44,45. (L ...
... been shown to have increased sensitivity and become positive at an earlier time after onset of ischaemia when compared to conventional assays40-43. This supports their use in the diagnosis of AMI. These assays are able to determine the presence of a positive biomarker reliably at 2 hours19,44,45. (L ...
2/09 Transpostion of the Great Arteries
... Pulmonary vein stenosis much less common but may cause PHTN ...
... Pulmonary vein stenosis much less common but may cause PHTN ...
Chapter 1 Echocardiographic Assessment of Cardiac Output and
... critical illness and is often challenging to diagnose and treat.1 Echo(e.g., pulmonary embolus) and monitor the response to therapy.2 Echocardiography can also identify patients with chronic RV failure if they present with other illnesses; knowledge of pre-existing RV dysfunction may be important du ...
... critical illness and is often challenging to diagnose and treat.1 Echo(e.g., pulmonary embolus) and monitor the response to therapy.2 Echocardiography can also identify patients with chronic RV failure if they present with other illnesses; knowledge of pre-existing RV dysfunction may be important du ...
Radnoti Isolated Perfused Heart
... oxygen consumption of most mammalian hearts is considerable. As the solubility of oxygen in saline solutions is much lower than that of blood, the oxygen tension is normally about 550-600 mmHg at 37 °C to ensure adequate delivery to the cardiac cells. These elevated oxygen tensions are not needed if ...
... oxygen consumption of most mammalian hearts is considerable. As the solubility of oxygen in saline solutions is much lower than that of blood, the oxygen tension is normally about 550-600 mmHg at 37 °C to ensure adequate delivery to the cardiac cells. These elevated oxygen tensions are not needed if ...
Indices of Myocardial Contractility
... Contractility may be defined also as the velocity of myocardial fiber shortening or change in ventricular dimension during contraction when the fiber shortens or the ventricle contracts against no load. In the clinic; however, myocardial contractility may be estimated by some parameters of systolic ...
... Contractility may be defined also as the velocity of myocardial fiber shortening or change in ventricular dimension during contraction when the fiber shortens or the ventricle contracts against no load. In the clinic; however, myocardial contractility may be estimated by some parameters of systolic ...
Biventricular Mural Thrombi in Patients With Dilated
... MRI is the gold-standard test for detecting the complications of ventricular dysfunction and also studying the viability of the myocardium (9, 10). Though contrast echocardiography also can be used for the diagnosis of ventricular thrombi, it has a sensitivity of 60%. In our cases, the diagnosis of ...
... MRI is the gold-standard test for detecting the complications of ventricular dysfunction and also studying the viability of the myocardium (9, 10). Though contrast echocardiography also can be used for the diagnosis of ventricular thrombi, it has a sensitivity of 60%. In our cases, the diagnosis of ...
Influence of Aging on Cardiac Function
... WATANABE, S., SUZUKI, N., KUDO, A., SUZUKI, T., ABE, S., SUZUKI, M., KOMATSU, S., SAIJO, Y. and MURAYAMA, N. Influence of Aging on Cardiac Function Examined by Echocardiography. Tohoku J. Exp. Med., 2005, 207 (1), 13-19 ── We assessed the influence of aging on cardiac function by means of parameters ...
... WATANABE, S., SUZUKI, N., KUDO, A., SUZUKI, T., ABE, S., SUZUKI, M., KOMATSU, S., SAIJO, Y. and MURAYAMA, N. Influence of Aging on Cardiac Function Examined by Echocardiography. Tohoku J. Exp. Med., 2005, 207 (1), 13-19 ── We assessed the influence of aging on cardiac function by means of parameters ...
Constrictive Pericarditis: A Case Study
... Examination of the neck veins is essential when considering the diagnosis of CP. Increased JVP has been reported in 93% of patients with CP18 and is frequently encountered in RCM. Kussmaul’s sign, or inspiratory JVD, replaces the normal inspiratory venous collapse of the jugular veins in patients wi ...
... Examination of the neck veins is essential when considering the diagnosis of CP. Increased JVP has been reported in 93% of patients with CP18 and is frequently encountered in RCM. Kussmaul’s sign, or inspiratory JVD, replaces the normal inspiratory venous collapse of the jugular veins in patients wi ...
Vectorial Analysis of the Normal Electrocardiogram
... What are the waves, intervals and segments of ECG? ...
... What are the waves, intervals and segments of ECG? ...
Boxer dog cardiomyopathy: an update
... prescribing antiarrhythmics for the affected dog, several considerations should be taken into account. There are known benefits to the use of certain antiarrhythmics in affected dogs, including the ability to decrease the number of VPCs and the complexity of the arrhythmia. Additionally, syncopal episo ...
... prescribing antiarrhythmics for the affected dog, several considerations should be taken into account. There are known benefits to the use of certain antiarrhythmics in affected dogs, including the ability to decrease the number of VPCs and the complexity of the arrhythmia. Additionally, syncopal episo ...
Cardiac MRI: Standardized Right and Left Ventricular Quantification
... In this study we aimed to establish a robust short axis cine-based contour tracing protocol for both LV and RV which can be used to train persons inexperienced in cardiac MRI. METHODS Study Population 22 healthy subjects (mean age 26 ± 4.2 years) underwent MRI imaging. No cardiac disease or valvular ...
... In this study we aimed to establish a robust short axis cine-based contour tracing protocol for both LV and RV which can be used to train persons inexperienced in cardiac MRI. METHODS Study Population 22 healthy subjects (mean age 26 ± 4.2 years) underwent MRI imaging. No cardiac disease or valvular ...
Safe Technique of Removal of Left Atrial Thrombus during Mitral
... presence of dense adhesion and absence of cleavage plane makes its removal difficult 14. and under such circumstances residual organized material can be left 14. Gallo and colleagues 8 practiced a technique that included occlusion of mitral valve orifice by a 24F Foley catheter to prevent entry of t ...
... presence of dense adhesion and absence of cleavage plane makes its removal difficult 14. and under such circumstances residual organized material can be left 14. Gallo and colleagues 8 practiced a technique that included occlusion of mitral valve orifice by a 24F Foley catheter to prevent entry of t ...
Identifiable Risk Factors Associated with Congestive Heart Failure
... congestive heart failure (CHF). There are more than 1 million hospital admissions for this condition in the United States annually. (10) Reducing the readmission rate to hospitals has become an increasingly important task. (21) A common timeframe to measure readmission used by Centers for Medicare a ...
... congestive heart failure (CHF). There are more than 1 million hospital admissions for this condition in the United States annually. (10) Reducing the readmission rate to hospitals has become an increasingly important task. (21) A common timeframe to measure readmission used by Centers for Medicare a ...
Analysis of vagal effects on ventricular rhythm in patients with atrial
... 2. Sixteen patients with chronic atrial fibrillation were studied. After administration of propranolol (0.2 mg/kg intravenously) baseline ventricular rhythm was recorded (500 R-R intervals). Recordings were repeated after methylatropine (0.02mg/kg intravenously). The shortest R-R interval was taken ...
... 2. Sixteen patients with chronic atrial fibrillation were studied. After administration of propranolol (0.2 mg/kg intravenously) baseline ventricular rhythm was recorded (500 R-R intervals). Recordings were repeated after methylatropine (0.02mg/kg intravenously). The shortest R-R interval was taken ...
Filename: 2009-11-30-IBCMT-VitaminC
... Treatment to tell the world that ultra high doses of ascorbate (Vitamin C) and lysine should be used to treat heart patients. For patients following the advice of their cardiologists, and not supplementing vitamin C, the Pauling Therapy is a miracle. In 1993, Pauling recommended not waiting for a ti ...
... Treatment to tell the world that ultra high doses of ascorbate (Vitamin C) and lysine should be used to treat heart patients. For patients following the advice of their cardiologists, and not supplementing vitamin C, the Pauling Therapy is a miracle. In 1993, Pauling recommended not waiting for a ti ...
Print - Circulation: Heart Failure
... strengthening of the cardiac muscle, and is presently being tested in chronic heart failure patients in a phase 2b trial (www.clinicaltrials.gov NLM identifier: NCT01786512). Initial studies argue that OM works independently of the calcium transient through an increase in the number of myosin heads ...
... strengthening of the cardiac muscle, and is presently being tested in chronic heart failure patients in a phase 2b trial (www.clinicaltrials.gov NLM identifier: NCT01786512). Initial studies argue that OM works independently of the calcium transient through an increase in the number of myosin heads ...
Full Text PDF - Edorium™ Journal of Cardiothoracic and Vascular
... small and very sharp blade which allows fine control at the point of the blade. Furthermore, the shape of the blade allows it contact to the surface of the thickened visceral pericardium in a parallel method. Therefore, the blade can cut the thickened pericardium at constant depth. This knife can be ...
... small and very sharp blade which allows fine control at the point of the blade. Furthermore, the shape of the blade allows it contact to the surface of the thickened visceral pericardium in a parallel method. Therefore, the blade can cut the thickened pericardium at constant depth. This knife can be ...
cardiac_cycle lecture 6
... The atria are filling with blood from the veins, and the ventricles are relaxing – the AV valves between the atria and ventricles open. Blood is flowing by gravity into the ventricles. The relaxing ventricles expand to accommodate the entering blood. At this moment the ventricles are ~ 80 – 90% fill ...
... The atria are filling with blood from the veins, and the ventricles are relaxing – the AV valves between the atria and ventricles open. Blood is flowing by gravity into the ventricles. The relaxing ventricles expand to accommodate the entering blood. At this moment the ventricles are ~ 80 – 90% fill ...
Congenitally Corrected Transposition of the Great Arteries in a
... septum from right to left leads to the appearance of Q waves in the right precordial leads that are absent from the left precordial leads. Also, the His bundle is longer as a result of the greater distance between the atrioventricular node and the base of the interventricular septum. This explains t ...
... septum from right to left leads to the appearance of Q waves in the right precordial leads that are absent from the left precordial leads. Also, the His bundle is longer as a result of the greater distance between the atrioventricular node and the base of the interventricular septum. This explains t ...
in Patients with Severe Congestive Heart Failure
... and left heart-filling pressures and increases in stroke volume and work (3, 4). However, milrinone also possesses potent direct vascular smooth muscle-relaxing properties in vitro (5, 6), and causes a reduction in mean arterial pressure in patients with heart failure (3, 4), indicating that some, i ...
... and left heart-filling pressures and increases in stroke volume and work (3, 4). However, milrinone also possesses potent direct vascular smooth muscle-relaxing properties in vitro (5, 6), and causes a reduction in mean arterial pressure in patients with heart failure (3, 4), indicating that some, i ...
Cardiovascular module – Phase 1
... make a set of notes that will help you understand this condition better. As a first step, you make a list of what you already know about blood pressure and what more you would like to find out in order to understand this condition better. You are aware that a cardiovascular module is available in yo ...
... make a set of notes that will help you understand this condition better. As a first step, you make a list of what you already know about blood pressure and what more you would like to find out in order to understand this condition better. You are aware that a cardiovascular module is available in yo ...
Endomyocardial fibrosis: Report of eight cases
... .this contributes significantly to cardiac output. The hemodynamic findings of biventricular endomyocardial fibrosis mimic those of constrictive pericarditis, so it is essential for patients in whom the latter is suspected to undergo biventricular angiocardiography. The left ventricular end-diastoli ...
... .this contributes significantly to cardiac output. The hemodynamic findings of biventricular endomyocardial fibrosis mimic those of constrictive pericarditis, so it is essential for patients in whom the latter is suspected to undergo biventricular angiocardiography. The left ventricular end-diastoli ...
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.