cardiac AP and basis of ECG 2
... • The body is a good conductor of electricity because tissue fluids have a high concentration of ions that move (creating a current) in response to potential differences. • The potential difference of about 120 mV between a depolarized and a resting area of heart muscle generates in the area of ...
... • The body is a good conductor of electricity because tissue fluids have a high concentration of ions that move (creating a current) in response to potential differences. • The potential difference of about 120 mV between a depolarized and a resting area of heart muscle generates in the area of ...
Normal Reference Values for Chamber Size and Function in Male
... cardiac size and function by cardiac magnetic resonance (CMR). Methods: We systematically searched the Cochrane Library, EMBASE, and MEDLINE databases (from inception to November 2011) to identify all published CMR studies of athletes participating in endurance sports. We limited the current analysi ...
... cardiac size and function by cardiac magnetic resonance (CMR). Methods: We systematically searched the Cochrane Library, EMBASE, and MEDLINE databases (from inception to November 2011) to identify all published CMR studies of athletes participating in endurance sports. We limited the current analysi ...
Journal of Renin-Angiotensin-Aldosterone System
... hospitalisation (p=0.00001). There were also significant improvements in other secondary endpoints, such as quality of life, signs and symptoms and left ventricular ejection fraction, in the valsartan group. At face value,Val-HeFT, therefore, seems to be a ‘positive’ trial. However, two subgroup ana ...
... hospitalisation (p=0.00001). There were also significant improvements in other secondary endpoints, such as quality of life, signs and symptoms and left ventricular ejection fraction, in the valsartan group. At face value,Val-HeFT, therefore, seems to be a ‘positive’ trial. However, two subgroup ana ...
Bi117 problem set 4 Grader: Jon
... It is possible to delay the embryonic lethality in mice caused by Hand2 null mutants through repression of the gene Apaf1, a downstream regulator of mitochondrially-induced apoptosis (Aiyer, 2005). What does this suggest about the role of Hand2 in ventricular formation? (1pt) ...
... It is possible to delay the embryonic lethality in mice caused by Hand2 null mutants through repression of the gene Apaf1, a downstream regulator of mitochondrially-induced apoptosis (Aiyer, 2005). What does this suggest about the role of Hand2 in ventricular formation? (1pt) ...
Coronary Artery Disease
... Results: Less time for ventricular filling & coronary artery filling + as HR increases, increased oxygen is needed each minute to eject the same volume of blood. ...
... Results: Less time for ventricular filling & coronary artery filling + as HR increases, increased oxygen is needed each minute to eject the same volume of blood. ...
Editorials Original Articles Advances in Arrhythmia and
... Copyright © 2017 American Heart Association, Inc. All rights reserved. Print ISSN: 1941-3149. Online ISSN: 1941-3084 ...
... Copyright © 2017 American Heart Association, Inc. All rights reserved. Print ISSN: 1941-3149. Online ISSN: 1941-3084 ...
BasisandPurposeAttachment2015-00466
... the infant or his family.” Pompe disease is an inborn errors of metabolism in which the deficiency of the enzyme acid alpha-glucosidase (GAA) results in accumulation of excess glycogen. This accumulation of glycogen leads to progressive weakness/damage of muscles and cardiomyopathy. There is a broad ...
... the infant or his family.” Pompe disease is an inborn errors of metabolism in which the deficiency of the enzyme acid alpha-glucosidase (GAA) results in accumulation of excess glycogen. This accumulation of glycogen leads to progressive weakness/damage of muscles and cardiomyopathy. There is a broad ...
Tricuspid and Mitral Valve Dysplasia
... as enalapril or benazepril, helps control fluid accumulation and improves the function of the failing heart. The main side effect is weakness from hypotension (low blood pressure). • Diuretics, such as furosemide or thiazides, are used to decrease fluid accumulation in the lungs or other parts of th ...
... as enalapril or benazepril, helps control fluid accumulation and improves the function of the failing heart. The main side effect is weakness from hypotension (low blood pressure). • Diuretics, such as furosemide or thiazides, are used to decrease fluid accumulation in the lungs or other parts of th ...
English - SciELO Costa Rica
... (VT), with or without hemodynamic involvement. Primary prevention regards to those measures taken without occurring any such events. International consensus management guidelines have been established 9 and consequently, there has been an increase in the overall number of implants, therefore the evi ...
... (VT), with or without hemodynamic involvement. Primary prevention regards to those measures taken without occurring any such events. International consensus management guidelines have been established 9 and consequently, there has been an increase in the overall number of implants, therefore the evi ...
Disturbances of Rate and Rhythm
... Block is within the His bundle system. Almost always due to organic disease, involving the infranodal conduction system. In the event of progression to complete heart block, alternative pacemakers are not reliable. Prophylactic ventricular pacing is required. ...
... Block is within the His bundle system. Almost always due to organic disease, involving the infranodal conduction system. In the event of progression to complete heart block, alternative pacemakers are not reliable. Prophylactic ventricular pacing is required. ...
The pathophysiology of heart failure
... The signs and symptoms of HF are the result of the clinical sequelae of inadequate CO and lack of efficient venous return [1]. Dyspnea, cough, and wheezing result from increased pressure in the pulmonary capillary bed due to ineffective forward flow from the left ventricle. Lower extremity edema, as ...
... The signs and symptoms of HF are the result of the clinical sequelae of inadequate CO and lack of efficient venous return [1]. Dyspnea, cough, and wheezing result from increased pressure in the pulmonary capillary bed due to ineffective forward flow from the left ventricle. Lower extremity edema, as ...
Acute and Fulminant Viral Myocarditis
... associated with a normal sized or dilated left ventricle and hemodynamic compromise 2. New-onset heart failure of 2 weeks to 3 months duration associated with a dilated left ventricle and new ventricular arrhythmias, second- or third-degree heart block, or failure to responds to usual care with 1-2 ...
... associated with a normal sized or dilated left ventricle and hemodynamic compromise 2. New-onset heart failure of 2 weeks to 3 months duration associated with a dilated left ventricle and new ventricular arrhythmias, second- or third-degree heart block, or failure to responds to usual care with 1-2 ...
Cardiovascular System
... 3. Bainbridge Reflexincreases HR due to an increased flow of blood back to heart because of exercise 4. Aortic Arch Reflexdecreased HR due to increase of blood pressure in aorta ...
... 3. Bainbridge Reflexincreases HR due to an increased flow of blood back to heart because of exercise 4. Aortic Arch Reflexdecreased HR due to increase of blood pressure in aorta ...
Pulmonary and Systemic Circuits Path of Blood Flow Heart Anatomy
... • Intercalated discs – Desmosomes: anchoring cells – Gap junctions: electrically couple adjacent cells • Allows heart to be functional syncytium (single coordinated unit) ...
... • Intercalated discs – Desmosomes: anchoring cells – Gap junctions: electrically couple adjacent cells • Allows heart to be functional syncytium (single coordinated unit) ...
Catheter Ablation of VT in Structural Heart Disease
... ICDs are first-line therapy for patients with VT and SHD. When antiarrhythmic drug therapy fails to control symptomatic recurrences of VT, catheter ablation should be considered. Elimination of recurrent or incessant VT leading to repeated ICD therapies is the anticipated outcome. Long term VT elimi ...
... ICDs are first-line therapy for patients with VT and SHD. When antiarrhythmic drug therapy fails to control symptomatic recurrences of VT, catheter ablation should be considered. Elimination of recurrent or incessant VT leading to repeated ICD therapies is the anticipated outcome. Long term VT elimi ...
VAD - Real-time Flow in the Management of Acute Right Ventricular
... By enabling the monitoring of the left ventricular preload and contractility throughout the post-operative period, Transonic® real-time flow measurement proved to be a useful tool both for the diagnosis and the management of right heart failure, including weaning from ECMO. It was a reliable alterna ...
... By enabling the monitoring of the left ventricular preload and contractility throughout the post-operative period, Transonic® real-time flow measurement proved to be a useful tool both for the diagnosis and the management of right heart failure, including weaning from ECMO. It was a reliable alterna ...
Cons. System and Cardiac Cycle WS
... c. the P wave of an EKG is recorded d. the atria remain in diastole 17. The second heart sound is heard during which phase of the cardiac cycle? A. isovolumetric relaxation C. ventricular ejection B. ventricular filling D. isovolumetric contraction 18. Isovolumetric contraction: a. occurs while the ...
... c. the P wave of an EKG is recorded d. the atria remain in diastole 17. The second heart sound is heard during which phase of the cardiac cycle? A. isovolumetric relaxation C. ventricular ejection B. ventricular filling D. isovolumetric contraction 18. Isovolumetric contraction: a. occurs while the ...
Notes
... iv) left & right bundle branches (a) left and right sides of heart v) Purkinje fibers (a) start near the apex & moves up thru ventricles (b) site of synapse between conduction system & ventricular myocardium 2) cardiac muscle cells a) striated, branching & mononucleated b) intercalated discs – cellu ...
... iv) left & right bundle branches (a) left and right sides of heart v) Purkinje fibers (a) start near the apex & moves up thru ventricles (b) site of synapse between conduction system & ventricular myocardium 2) cardiac muscle cells a) striated, branching & mononucleated b) intercalated discs – cellu ...
IHD - Heart Line
... patient exercises in a controlled manner on a treadmill or stationary bicycle at varied speeds and elevations. This test helps detect heart irregularities, disease and damage. The outcome of T M T is similar to the E C G ...
... patient exercises in a controlled manner on a treadmill or stationary bicycle at varied speeds and elevations. This test helps detect heart irregularities, disease and damage. The outcome of T M T is similar to the E C G ...
H. Hutten -
... of fundamental relevance. A suitable procedure for cardiac surveillance should allow quasi-continuous and in most cases permanent, i.e. lifelong, application. The used equipment should not constrain the patient in his daily routine activities and preferably not require special handling by the patien ...
... of fundamental relevance. A suitable procedure for cardiac surveillance should allow quasi-continuous and in most cases permanent, i.e. lifelong, application. The used equipment should not constrain the patient in his daily routine activities and preferably not require special handling by the patien ...
Vulnerable Brain and Ventricular Assist Devices
... the complications related to neurological adverse effects have not improved substantially.2,3 Hemorrhagic and ischemic strokes continue to occur, with a frequency greater than that observed in patients with advanced heart failure.2 This complication has limited the expansion of such devices to patie ...
... the complications related to neurological adverse effects have not improved substantially.2,3 Hemorrhagic and ischemic strokes continue to occur, with a frequency greater than that observed in patients with advanced heart failure.2 This complication has limited the expansion of such devices to patie ...
Hypertrophic Cardiomyopathy (HCM)
... Treating HCM Once discovered, the treatment of HCM depends upon its severity and the associated symptoms. In many patients the first line of treatment usually consists of medical therapy. Patients at high risk are those who have a family history of sudden death, episodes of fainting, abnormal blood ...
... Treating HCM Once discovered, the treatment of HCM depends upon its severity and the associated symptoms. In many patients the first line of treatment usually consists of medical therapy. Patients at high risk are those who have a family history of sudden death, episodes of fainting, abnormal blood ...
The advent of cardiac resynchronization therapy has created a
... Advanced HF. This term is vague and may refer to pathologic findings or symptoms presumably in patients in functional class III or IV NYHA [26–31]. Dyssynchronous HF. A dyssynchronopathy status with HF can be induced in dogs with experimental left bundle branch block [32–35]. As far as dyssynchronou ...
... Advanced HF. This term is vague and may refer to pathologic findings or symptoms presumably in patients in functional class III or IV NYHA [26–31]. Dyssynchronous HF. A dyssynchronopathy status with HF can be induced in dogs with experimental left bundle branch block [32–35]. As far as dyssynchronou ...
Supplemental Content - Annals of Internal Medicine
... incorporated into the slide sets remain the sole and exclusive property of ACP. The slide sets may be used only by the person who downloads or purchases them and only for the purpose of presenting them during not-for-profit educational activities. Users may incorporate the entire slide set or select ...
... incorporated into the slide sets remain the sole and exclusive property of ACP. The slide sets may be used only by the person who downloads or purchases them and only for the purpose of presenting them during not-for-profit educational activities. Users may incorporate the entire slide set or select ...
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.