Quantification of 3-D regional myocardial
... displacement of the beads by using biplane cine angiography. This approach offers reasonable spatial and temporal resolution, although it is quite tedious and can be confounded by errors associated with localization of the beads in 3-D space (14, 29). The sonomicrometry approach offers both higher s ...
... displacement of the beads by using biplane cine angiography. This approach offers reasonable spatial and temporal resolution, although it is quite tedious and can be confounded by errors associated with localization of the beads in 3-D space (14, 29). The sonomicrometry approach offers both higher s ...
Cellular Physiology and Biochemistr and Biochemistry
... especially for rabbit heart [12], isolated structured tissues like perfused ventricular wedge preparation [13], trabecula or papillary muscles, and single, enzymatically dissociated cardiomyocytes. Pharmacological experiments in Langendorff hearts provide evidence of drug action under conditions clo ...
... especially for rabbit heart [12], isolated structured tissues like perfused ventricular wedge preparation [13], trabecula or papillary muscles, and single, enzymatically dissociated cardiomyocytes. Pharmacological experiments in Langendorff hearts provide evidence of drug action under conditions clo ...
Cardiac Function in Heart Failure: The Role of Calcium
... with the development of human heart failure [22]. These changes in RyR2 and L-type calcium channels lead to reduced calcium transients in failing hearts. While RyR2 Ca2+ release channels have received significant attention, the role of a second pathway for internal Ca2+-release has largely been igno ...
... with the development of human heart failure [22]. These changes in RyR2 and L-type calcium channels lead to reduced calcium transients in failing hearts. While RyR2 Ca2+ release channels have received significant attention, the role of a second pathway for internal Ca2+-release has largely been igno ...
Epicardial retinoid X receptor is required for myocardial growth and
... from wild-type embryos are largely negative for the transition marker vimentin (red signal; 15 vimentin-positive cells per 120 total cells) and positive for ␣-smooth muscle actin (green signal). Epicardial RXR␣ mutant explants fail to down-regulate vimentin (red signal, 117 of 122 total cells) and a ...
... from wild-type embryos are largely negative for the transition marker vimentin (red signal; 15 vimentin-positive cells per 120 total cells) and positive for ␣-smooth muscle actin (green signal). Epicardial RXR␣ mutant explants fail to down-regulate vimentin (red signal, 117 of 122 total cells) and a ...
Comprehensive characterisation of hypertensive heart disease left
... New York, USA: IBM Corp.). Categorical variables were analysed using Fisher’s exact test. Data are expressed as mean±SD where appropriate. Normally distributed continuous variables were compared using one-way analysis of variance with Bonferroni correction for multiple comparisons. Continuous variab ...
... New York, USA: IBM Corp.). Categorical variables were analysed using Fisher’s exact test. Data are expressed as mean±SD where appropriate. Normally distributed continuous variables were compared using one-way analysis of variance with Bonferroni correction for multiple comparisons. Continuous variab ...
PDF
... techniques allow the visualization of shock-induced changes in membrane potential, these recordings are, however, confined to activity on the cardiac surfaces only. In a complex 3D anatomical structure such as the heart, shock-induced electrical events and post-shock activity take place throughout t ...
... techniques allow the visualization of shock-induced changes in membrane potential, these recordings are, however, confined to activity on the cardiac surfaces only. In a complex 3D anatomical structure such as the heart, shock-induced electrical events and post-shock activity take place throughout t ...
Cardioverter-defibrillators (Implantable And External)
... o Chagas Disease The use of the ICD is considered investigational for all other indications in pediatric patients as there is insufficient evidence to support a conclusion concerning the health outcomes or benefits associated with this procedure. ...
... o Chagas Disease The use of the ICD is considered investigational for all other indications in pediatric patients as there is insufficient evidence to support a conclusion concerning the health outcomes or benefits associated with this procedure. ...
Double Outlet Right Ventricle With Pulmonary Stenosis - Heart
... ventricular septal defect which lies near to the pulmonary artery and is relatively remote from the aortic orifice. Flow from the right ventricle is mainly into the aorta, and these patients are cyanotic from birth. Type 2b. Here there is a large supracristal ventricular septal defect related to bot ...
... ventricular septal defect which lies near to the pulmonary artery and is relatively remote from the aortic orifice. Flow from the right ventricle is mainly into the aorta, and these patients are cyanotic from birth. Type 2b. Here there is a large supracristal ventricular septal defect related to bot ...
Impaired left ventricular relaxation in hypertrophic
... a previous study (7) using M-mode echocardiographic techniques to document impaired relaxation, these authors found a relation between the extent of hypertrophy and impaired left ventricular relaxation . In both studies they report significant relaxation impairment with only mild degrees of hypertro ...
... a previous study (7) using M-mode echocardiographic techniques to document impaired relaxation, these authors found a relation between the extent of hypertrophy and impaired left ventricular relaxation . In both studies they report significant relaxation impairment with only mild degrees of hypertro ...
FIELD UNDERWRITING GUIDE - Berson
... Whether you are new to the business or a seasoned veteran to writing apps, we believe this Field Underwriting Guide can be a great “sidekick” as you seek to improve your production levels. It can be called upon for the consistency and the competitive edge you need to increase your percentage of succ ...
... Whether you are new to the business or a seasoned veteran to writing apps, we believe this Field Underwriting Guide can be a great “sidekick” as you seek to improve your production levels. It can be called upon for the consistency and the competitive edge you need to increase your percentage of succ ...
Atrial fibrillation management
... in the detection and diagnosis of AF. These processes are expected to continue, thereby increasing AF prevalence 2.5 times by the year 2050.11 AF is currently already a significant burden to the general population’s health and health care costs, and this burden will avalanche in the next decades. Pr ...
... in the detection and diagnosis of AF. These processes are expected to continue, thereby increasing AF prevalence 2.5 times by the year 2050.11 AF is currently already a significant burden to the general population’s health and health care costs, and this burden will avalanche in the next decades. Pr ...
product monograph nitroglycerin in 5
... to doses far in excess of those used acutely, have consistently failed. Only after nitrates have been absent from the body for several hours has their anti-anginal efficacy been restored. To avoid development of tolerance to nitroglycerin, drug free intervals of 10-12 hours are known to be sufficien ...
... to doses far in excess of those used acutely, have consistently failed. Only after nitrates have been absent from the body for several hours has their anti-anginal efficacy been restored. To avoid development of tolerance to nitroglycerin, drug free intervals of 10-12 hours are known to be sufficien ...
ventricular weight in cardiac hypertrophy - Heart
... ventricular hypertrophy is suspected, this criterion alone is sufficiently accurate, for practically all cases of suspected left ventricular hypertrophy had a weight greater than 250 g., and the amount by which this weight was exceeded paralleled the degree of left ventricular hypertrophy present. I ...
... ventricular hypertrophy is suspected, this criterion alone is sufficiently accurate, for practically all cases of suspected left ventricular hypertrophy had a weight greater than 250 g., and the amount by which this weight was exceeded paralleled the degree of left ventricular hypertrophy present. I ...
Digitalis Toxicity: A Fading but Crucial Complication to Recognize REVIEW
... an antiquated practice of titrating doses until toxic manifestations arose, to a lower dosing regimen guided by serum levels. Digoxin continues to play a role in treatment of chronic systolic/diastolic heart failure and atrial fibrillation. However, due to several landmark studies showing physiologi ...
... an antiquated practice of titrating doses until toxic manifestations arose, to a lower dosing regimen guided by serum levels. Digoxin continues to play a role in treatment of chronic systolic/diastolic heart failure and atrial fibrillation. However, due to several landmark studies showing physiologi ...
Cardiovascular end-organ damage in response to increased blood
... Baroreflex sensitivity (BRS) is often reduced in elderly populations and patients with chronic cardiovascular diseases leading to a concomitant rise in blood pressure variability (BPV) that is associated with increased cardiovascular related morbidity and mortality. Thus, there is a need to better u ...
... Baroreflex sensitivity (BRS) is often reduced in elderly populations and patients with chronic cardiovascular diseases leading to a concomitant rise in blood pressure variability (BPV) that is associated with increased cardiovascular related morbidity and mortality. Thus, there is a need to better u ...
Digitalis Toxicity: A Fading but Crucial Complication to Recognize
... an antiquated practice of titrating doses until toxic manifestations arose, to a lower dosing regimen guided by serum levels. Digoxin continues to play a role in treatment of chronic systolic/diastolic heart failure and atrial fibrillation. However, due to several landmark studies showing physiologi ...
... an antiquated practice of titrating doses until toxic manifestations arose, to a lower dosing regimen guided by serum levels. Digoxin continues to play a role in treatment of chronic systolic/diastolic heart failure and atrial fibrillation. However, due to several landmark studies showing physiologi ...
Techniques for ventricular repolarization instability
... ECG time intervals will be described. In section III-B2 methods used to evaluate electrocardiographic T wave morphology changes, as a reflection of amplified heterogeneities in AP repolarization, will be presented. In addition to spatial heterogeneities, increased temporal repolarization heterogenei ...
... ECG time intervals will be described. In section III-B2 methods used to evaluate electrocardiographic T wave morphology changes, as a reflection of amplified heterogeneities in AP repolarization, will be presented. In addition to spatial heterogeneities, increased temporal repolarization heterogenei ...
Nitroglycerin in 5% Dextrose Injection, USP
... anticoagulant effect of heparin. Intravenous nitroglycerin can induce heparin resistance. In patients receiving intravenous nitroglycerin, concomitant heparin therapy should be guided by frequent measurement of the activated partial thromboplastin time. ...
... anticoagulant effect of heparin. Intravenous nitroglycerin can induce heparin resistance. In patients receiving intravenous nitroglycerin, concomitant heparin therapy should be guided by frequent measurement of the activated partial thromboplastin time. ...
Chapter 19
... • This pushes more blood into vena cava, increasing venous return to right side of heart, which increases right ventricular stroke volume • Increased volume prolongs right ventricular systole and ...
... • This pushes more blood into vena cava, increasing venous return to right side of heart, which increases right ventricular stroke volume • Increased volume prolongs right ventricular systole and ...
Heart rate variability decreases with age - Core
... In Table 4, the age-related decrease in HRV for male subjects was greater and more rapid than that for female subjects (all measures). Using SDNN, SDANN and the SDNN index, HRV for male subjects began to decrease significantly before age 30. Using SDNN and SDANN, HRV for female subjects exhibited a ...
... In Table 4, the age-related decrease in HRV for male subjects was greater and more rapid than that for female subjects (all measures). Using SDNN, SDANN and the SDNN index, HRV for male subjects began to decrease significantly before age 30. Using SDNN and SDANN, HRV for female subjects exhibited a ...
QT interval variability in body surface ECG
... Temporal QT interval variations may differ between recording sites reflecting local repolarization signal heterogeneity, lead-specific respiration effects and noise (e.g. myopotentials).19 Short-term QTV analysis of 12-lead ECG suggests considerable inter-lead differences.20 Short-term QTV from ambu ...
... Temporal QT interval variations may differ between recording sites reflecting local repolarization signal heterogeneity, lead-specific respiration effects and noise (e.g. myopotentials).19 Short-term QTV analysis of 12-lead ECG suggests considerable inter-lead differences.20 Short-term QTV from ambu ...
60 Years of Making Hearts Beat - Institut de Cardiologie de Montréal
... demonstration of the commitment of MHI doctors and employees to this institution they have helped grow and of the Quebec community’s dedication to an institution that has been a source of pride for 60 years. This year has given us an opportunity to celebrate in a manner befitting our incredible 60-y ...
... demonstration of the commitment of MHI doctors and employees to this institution they have helped grow and of the Quebec community’s dedication to an institution that has been a source of pride for 60 years. This year has given us an opportunity to celebrate in a manner befitting our incredible 60-y ...
Mechanisms of Activation of Cardiac Glycogen Phosphorylase in
... Corporation. Carrier-free ( 32 P) inorganic phosphate was purchased from Schwarz Bio-Research. Phosphorylase b, containing less than 2% of the a form, was prepared as described by DeLange et al. (20). Statistical Methods.—Statistical analyses were performed using Student's t-test for paired or unpai ...
... Corporation. Carrier-free ( 32 P) inorganic phosphate was purchased from Schwarz Bio-Research. Phosphorylase b, containing less than 2% of the a form, was prepared as described by DeLange et al. (20). Statistical Methods.—Statistical analyses were performed using Student's t-test for paired or unpai ...
Deciphering the Sinus Tachycardias
... Department of Cardiovascular Medicine, St. Georges Hospital Medical School, London, U.K. ...
... Department of Cardiovascular Medicine, St. Georges Hospital Medical School, London, U.K. ...
Coronary artery disease
Coronary artery disease (CAD), also known as ischemic heart disease (IHD), atherosclerotic heart disease, atherosclerotic cardiovascular disease, and coronary heart disease, is a group of diseases that includes: stable angina, unstable angina, myocardial infarction, and sudden coronary death. It is within the group of cardiovascular diseases of which it is the most common type. A common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Occasionally it may feel like heartburn. Usually symptoms occur with exercise or emotional stress, last less than a few minutes, and gets better with rest. Shortness of breath may also occur and sometimes no symptoms are present. The first sign is occasionally a heart attack. Other complications include heart failure or an irregular heartbeat.Risk factors include: high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol, among others. Other risks include depression. The underlying mechanism involves atherosclerosis of the arteries of the heart. A number of tests may help with diagnoses including: electrocardiogram, cardiac stress testing, coronary computed tomographic angiography, and coronary angiogram, among others.Prevention is by eating a healthy diet, regular exercise, maintaining a healthy weight and not smoking. Sometimes medication for diabetes, high cholesterol, or high blood pressure are also used. There is limited evidence for screening people who are at low risk and do not have symptoms. Treatment involves the same measures as prevention. Additional medications such as antiplatelets including aspirin, beta blockers, or nitroglycerin may be recommended. Procedures such as percutaneous coronary intervention (PCI) or coronary artery bypass surgery (CABG) may be used in severe disease. In those with stable CAD it is unclear if PCI or CABG in addition to the other treatments improve life expectancy or decreases heart attack risk.In 2013 CAD was the most common cause of death globally, resulting in 8.14 million deaths (16.8%) up from 5.74 million deaths (12%) in 1990. The risk of death from CAD for a given age has decreased between 1980 and 2010 especially in the developed world. The number of cases of CAD for a given age has also decreased between 1990 and 2010. In the United States in 2010 about 20% of those over 65 had CAD, while it was present in 7% of those 45 to 64, and 1.3% of those 18 to 45. Rates are higher among men than women of a given age.