ACR-NASCI-SPR Practice Parameter for the Performance and
... where reduced global RV function and regional RV WMAs constitute diagnostic criteria for disease [34,35]. Right ventricular size and function assessment, along with pulmonary MRA, is useful in evaluating and following patients with pulmonary arterial hypertension [36,37]. B. Acquired Heart Disease 1 ...
... where reduced global RV function and regional RV WMAs constitute diagnostic criteria for disease [34,35]. Right ventricular size and function assessment, along with pulmonary MRA, is useful in evaluating and following patients with pulmonary arterial hypertension [36,37]. B. Acquired Heart Disease 1 ...
Attenuation of the Negative Inotropic Effects of Metoprolol at
... All three drugs similarly reduced maximal rate of increase of left ventricular pressures (LV⫹dP/dtmax) by approximately 10%, but diversely modified the force-interval relationship. The parameter c (the reduction in LV⫹dP/dtmax of a fixed premature stimulus on mechanical restitution) was significantl ...
... All three drugs similarly reduced maximal rate of increase of left ventricular pressures (LV⫹dP/dtmax) by approximately 10%, but diversely modified the force-interval relationship. The parameter c (the reduction in LV⫹dP/dtmax of a fixed premature stimulus on mechanical restitution) was significantl ...
the mechanism of intracardiac shunting in the lizard varanus
... Ventricular systemic output (VSO), ventricular pulmonary output (VPO) and the sum of both, total heart output (THO) were neither significantly different with unpaired or paired i-test nor showed any trend between breathing periods and apnoea (Table 1). The mean values ( ± S . D . ) from both periods ...
... Ventricular systemic output (VSO), ventricular pulmonary output (VPO) and the sum of both, total heart output (THO) were neither significantly different with unpaired or paired i-test nor showed any trend between breathing periods and apnoea (Table 1). The mean values ( ± S . D . ) from both periods ...
Associations Between Cardiac Fibrosis and
... (Fig. 1). However, CTGF expression in the ventricular myocardium was significantly lower (117.3±17.9 vs. 126±15.0, p=0.003) in both SR and AF groups compared to corresponding atria (Fig. 1). Representative images of CTGF expression in RA are shown in Figure 2. CTGF was expressed by cardiomyocytes fr ...
... (Fig. 1). However, CTGF expression in the ventricular myocardium was significantly lower (117.3±17.9 vs. 126±15.0, p=0.003) in both SR and AF groups compared to corresponding atria (Fig. 1). Representative images of CTGF expression in RA are shown in Figure 2. CTGF was expressed by cardiomyocytes fr ...
Confirmation of Cause and Manner of Death Via a Comprehensive
... channelopathy/cardiomyopathy genes (90 total) were performed on autopsy blood–derived genomic DNA from a previously healthy 16-year-old adolescent female found Accepted for publication October 7, 2013. Published as an Early Online Release December 2, 2013. From the Mayo Medical School, Rochester, Mi ...
... channelopathy/cardiomyopathy genes (90 total) were performed on autopsy blood–derived genomic DNA from a previously healthy 16-year-old adolescent female found Accepted for publication October 7, 2013. Published as an Early Online Release December 2, 2013. From the Mayo Medical School, Rochester, Mi ...
Duration of the Phases of Left Ventricular Systole
... the duration of the phases of systole. He demonstrated in the frog heart that augmentation of filling prolonged ejection, shortened the strain (isovolumie) phase, and delayed aortic valve closure. These results were later confirmed by Peserico10 in the turtle heart, hy Katz2 in the isolated dog hear ...
... the duration of the phases of systole. He demonstrated in the frog heart that augmentation of filling prolonged ejection, shortened the strain (isovolumie) phase, and delayed aortic valve closure. These results were later confirmed by Peserico10 in the turtle heart, hy Katz2 in the isolated dog hear ...
Ventricular Tachycardia during Treatment with Modafinil
... ventricular contractions during ambulatory Holter monitoring in a 54-year-old Caucasian man who used modafinil 100 mg twice daily for fatigue and lack of concentration, but was otherwise healthy [7]. The US-prescribing information, however, notes that caution should be exercised when prescribing mod ...
... ventricular contractions during ambulatory Holter monitoring in a 54-year-old Caucasian man who used modafinil 100 mg twice daily for fatigue and lack of concentration, but was otherwise healthy [7]. The US-prescribing information, however, notes that caution should be exercised when prescribing mod ...
effects of a randomized controlled trial of diet and/or exercise on
... addition to advances in medical care and management of cardiovascular and other diseases 3,4. By 2040, it is projected there will be 77.2 million new HF cases 6. Even more alarming, an underestimation of rates most likely occurs because some patients who have left ventricular dysfunction are asympto ...
... addition to advances in medical care and management of cardiovascular and other diseases 3,4. By 2040, it is projected there will be 77.2 million new HF cases 6. Even more alarming, an underestimation of rates most likely occurs because some patients who have left ventricular dysfunction are asympto ...
Holter ECG - AMEDTEC Medizintechnik Aue GmbH
... AMEDTEC ECGpro Holter makes no compromises in the presentation of the ECG curves. From every graph and table you have direct access to the synchronous ECG. The whole ECG is shown in the typical speeds up to 50mm/s. Ventricular and supraventricular events as well as paced beats are color-highlighted. ...
... AMEDTEC ECGpro Holter makes no compromises in the presentation of the ECG curves. From every graph and table you have direct access to the synchronous ECG. The whole ECG is shown in the typical speeds up to 50mm/s. Ventricular and supraventricular events as well as paced beats are color-highlighted. ...
Use of Sildenafil for Safe Improvement of Erectile Function
... to ensure adequate functional capacity (⬎5 metabolic equivalents, a level of cardiovascular fitness necessary for most sexual activity15) and exclude ischemia. Overall, 3 patients were excluded because they had active ischemia. Four patients failed to achieve the target heart rate (85% of maximal [2 ...
... to ensure adequate functional capacity (⬎5 metabolic equivalents, a level of cardiovascular fitness necessary for most sexual activity15) and exclude ischemia. Overall, 3 patients were excluded because they had active ischemia. Four patients failed to achieve the target heart rate (85% of maximal [2 ...
Gradual Changes of ECG Waveform During and After
... The directions and magnitudes of time-normalized P, QRS, and ST vectors, and other ECG parameters analyzed during and after multistage exercise in 56 ostensibly healthy men aged 23 to 62. By selective averaging with a digital computer system a single representative beat was obtained from each stage. ...
... The directions and magnitudes of time-normalized P, QRS, and ST vectors, and other ECG parameters analyzed during and after multistage exercise in 56 ostensibly healthy men aged 23 to 62. By selective averaging with a digital computer system a single representative beat was obtained from each stage. ...
Electrocardiography Heart Anatomy
... Anterior Descending Art. (ant. supply) (LAD) Left Circumflex Art. (lat. left V. supply) Right Coronary Art. (right A. & V.) Runs infer. to post. ...
... Anterior Descending Art. (ant. supply) (LAD) Left Circumflex Art. (lat. left V. supply) Right Coronary Art. (right A. & V.) Runs infer. to post. ...
Unpublished 04/16/2014 - State Bar of Michigan
... coronary blood flow caused by increased or decreased activity of the heart. The indirect effects, which are mostly opposite to the direct effects, play a far more important role in normal control of coronary blood flow. Thus, sympathetic stimulation, which releases norepinephrine and epinephrine, in ...
... coronary blood flow caused by increased or decreased activity of the heart. The indirect effects, which are mostly opposite to the direct effects, play a far more important role in normal control of coronary blood flow. Thus, sympathetic stimulation, which releases norepinephrine and epinephrine, in ...
Atrial Fibrillation In Heart Failure
... electrocardiography and therefore well represented in clinical trials that assess the benefit of anticoagulation, paroxysmal AF, which by its nature is more difficult to capture, has been less well studied. Many of the earlier trials of warfarin in AF excluded patients with paroxysmal AF altogether. ...
... electrocardiography and therefore well represented in clinical trials that assess the benefit of anticoagulation, paroxysmal AF, which by its nature is more difficult to capture, has been less well studied. Many of the earlier trials of warfarin in AF excluded patients with paroxysmal AF altogether. ...
Effects of Respiratory Center Activity on the Heart
... of myocardial contractility.1-2 Prominent rhythmic modulation of ventricular contractility (hereafter referred to as contractility waves) at the frequency of the respiratory movements was often observed both before and after vagotomy. Hence, such contractility waves serve as an index of the variatio ...
... of myocardial contractility.1-2 Prominent rhythmic modulation of ventricular contractility (hereafter referred to as contractility waves) at the frequency of the respiratory movements was often observed both before and after vagotomy. Hence, such contractility waves serve as an index of the variatio ...
Baroreflex sensitivity changes with calcium antagonist
... elderly subjects, predominantly with either angiotensin-converting enzyme inhibitors9–12 or with calcium channel blocking drugs.12–17 The basis for the observed increases in BRS with treatment, although not seen in every study,17 is thought to be an increase in large artery compliance permitting res ...
... elderly subjects, predominantly with either angiotensin-converting enzyme inhibitors9–12 or with calcium channel blocking drugs.12–17 The basis for the observed increases in BRS with treatment, although not seen in every study,17 is thought to be an increase in large artery compliance permitting res ...
and Volume by Two-dimensional Echocardiography: In Vitro
... FIGURE 4. Derivation of total left ventricular myocardial and cavity volumes using Simpson's rule and short-axis area-length method. V = volume, n = number of sections; A = area; T = thickness; AP.P = area at high papillary muscle level; L = length. ...
... FIGURE 4. Derivation of total left ventricular myocardial and cavity volumes using Simpson's rule and short-axis area-length method. V = volume, n = number of sections; A = area; T = thickness; AP.P = area at high papillary muscle level; L = length. ...
Cardiac Mean Electrical Axis in Thoroughbreds—Standardization by
... The Thoroughbred racing horse is a widespread breed in racetracks around the world. Thoroughbreds’ physical constitution favors the achievement of a greater speed, and for this reason they take part in many other sports modalities, such as Polo, and are used in cross-breeding with equines as the Qua ...
... The Thoroughbred racing horse is a widespread breed in racetracks around the world. Thoroughbreds’ physical constitution favors the achievement of a greater speed, and for this reason they take part in many other sports modalities, such as Polo, and are used in cross-breeding with equines as the Qua ...
Epidemiology, Pathophysiology, Prognosis, and Treatment of
... women), mean age 81 years, HF developed in 27% of patients.8 Significant independent risk factors for the development of HF were male gender (risk ratio ⫽ 1.4), hypertension (risk ratio ⫽ 2.5), CAD (risk ratio ⫽ 4.0), diabetes mellitus (risk ratio ⫽ 1.6), and age (risk ratio ⫽ 1.05 for each 1-year i ...
... women), mean age 81 years, HF developed in 27% of patients.8 Significant independent risk factors for the development of HF were male gender (risk ratio ⫽ 1.4), hypertension (risk ratio ⫽ 2.5), CAD (risk ratio ⫽ 4.0), diabetes mellitus (risk ratio ⫽ 1.6), and age (risk ratio ⫽ 1.05 for each 1-year i ...
Ventricular Dysrhythmias (Fast and Easy ECGs, Shade / Wesley)
... appearance varies considerably from complex to complex. • Ventricular fibrillation (VF) results from chaotic firing of multiple sites in the ventricles causing the heart muscle to quiver rather than contracting efficiently, producing an absence of effective muscular contraction and cardiac output. ...
... appearance varies considerably from complex to complex. • Ventricular fibrillation (VF) results from chaotic firing of multiple sites in the ventricles causing the heart muscle to quiver rather than contracting efficiently, producing an absence of effective muscular contraction and cardiac output. ...
Medtronic Structural Heart ICD
... A coding proposal addressing re-implantation of coronary buttons was presented at the March 2015 C&M meeting, so further guidance and possible code table changes may be forthcoming. ...
... A coding proposal addressing re-implantation of coronary buttons was presented at the March 2015 C&M meeting, so further guidance and possible code table changes may be forthcoming. ...
RHEUMATIC HEART DISEASE IN CHILDREN
... manifestation of rheumatic fever. When present, the nodules appear over the extensor surfaces of the elbows, knees, ankles, knuckles, and on the scalp and spinous processes of the lumbar and thoracic vertebrae where they are attached to the tendon sheath. They are firm, nontender, and free from atta ...
... manifestation of rheumatic fever. When present, the nodules appear over the extensor surfaces of the elbows, knees, ankles, knuckles, and on the scalp and spinous processes of the lumbar and thoracic vertebrae where they are attached to the tendon sheath. They are firm, nontender, and free from atta ...
Getting ready for Cardiac Catheterization and/or Angioplasty
... How will I feel after the angioplasty? For most people, an angioplasty will relieve or improve their angina. If you have symptoms, do not ignore them. If you feel pain, pressure or tightness in your chest, jaw or arms, or any other symptoms like your previous angina, treat it as before and contact y ...
... How will I feel after the angioplasty? For most people, an angioplasty will relieve or improve their angina. If you have symptoms, do not ignore them. If you feel pain, pressure or tightness in your chest, jaw or arms, or any other symptoms like your previous angina, treat it as before and contact y ...
Myocardial infarction
Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, occurs when blood flow stops to a part of the heart causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Often it is in the center or left side of the chest and lasts for more than a few minutes. The discomfort may occasionally feel like heartburn. Other symptoms may include shortness of breath, nausea, feeling faint, a cold sweat, or feeling tired. About 30% of people have atypical symptoms, with women more likely than men to present atypically. Among those over 75 years old, about 5% have had an MI with little or no history of symptoms. An MI may cause heart failure, an irregular heartbeat, or cardiac arrest.Most MIs occur due to coronary artery disease. Risk factors include high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol intake, among others. The mechanism of an MI often involves the rupture of an atherosclerotic plaque, leading to complete blockage of a coronary artery. MIs are less commonly caused by coronary artery spasms, which may be due to cocaine, significant emotional stress, and extreme cold, among others. A number of tests are useful to help with diagnosis, including electrocardiograms (ECGs), blood tests, and coronary angiography. An ECG may confirm an ST elevation MI if ST elevation is present. Commonly used blood tests include troponin and less often creatine kinase MB.Aspirin is an appropriate immediate treatment for a suspected MI. Nitroglycerin or opioids may be used to help with chest pain; however, they do not improve overall outcomes. Supplemental oxygen should be used in those with low oxygen levels or shortness of breath. In ST elevation MIs treatments which attempt to restore blood flow to the heart are typically recommended and include angioplasty, where the arteries are pushed open, or thrombolysis, where the blockage is removed using medications. People who have a non-ST elevation myocardial infarction (NSTEMI) are often managed with the blood thinner heparin, with the additional use angioplasty in those at high risk. In people with blockages of multiple coronary arteries and diabetes, bypass surgery (CABG) may be recommended rather than angioplasty. After an MI, lifestyle modifications, along with long term treatment with aspirin, beta blockers, and statins, are typically recommended.Worldwide, more than 3 million people have ST elevation MIs and 4 million have NSTEMIs each year. STEMIs occur about twice as often in men as women. About one million people have an MI each year in the United States. In the developed world the risk of death in those who have had an STEMI is about 10%. Rates of MI for a given age have decreased globally between 1990 and 2010.