Thermodynamic analysis questions claims of improved cardiac
... supporting evidence. The second thread is the more recent claim that a diet high in omega-3 fish oils can dramatically increase the pumping efficiency of the left ventricle, either by increasing its capacity for external work, with little or no change of oxygen consumption, or by a minimal effect on ...
... supporting evidence. The second thread is the more recent claim that a diet high in omega-3 fish oils can dramatically increase the pumping efficiency of the left ventricle, either by increasing its capacity for external work, with little or no change of oxygen consumption, or by a minimal effect on ...
Removal of superfluous ICD leads
... foreign body; it is excluded from normal tissue by encapsulating it in fibrous tissue. During lead implantation, tissue disruption and/or the application of physical stresses (pressure, compression, shearing and traction) cause an injury to the surrounding tissue. Tissue injury triggers an inflammat ...
... foreign body; it is excluded from normal tissue by encapsulating it in fibrous tissue. During lead implantation, tissue disruption and/or the application of physical stresses (pressure, compression, shearing and traction) cause an injury to the surrounding tissue. Tissue injury triggers an inflammat ...
Semigran and J. Matthew Toole O`Connell, Francis D. Pagani
... therapy for HF. As MCS use and management move beyond the purview of academic transplant centers, it is essential that the indications for MCS and the essentials of device management are broadly understood. Although we have provided a summary of current professional society guidelines in Table 1, it ...
... therapy for HF. As MCS use and management move beyond the purview of academic transplant centers, it is essential that the indications for MCS and the essentials of device management are broadly understood. Although we have provided a summary of current professional society guidelines in Table 1, it ...
High Density Lipoprotein (HDL)
... your family to determine whether HDL-cholesterol is high due to an inherited cause. A family history of longevity is reassuring whereas a history of early cardiovascular disease may prompt a referral to a specialist. Only they can decide if the high level of HDL is relevant and decide whether other ...
... your family to determine whether HDL-cholesterol is high due to an inherited cause. A family history of longevity is reassuring whereas a history of early cardiovascular disease may prompt a referral to a specialist. Only they can decide if the high level of HDL is relevant and decide whether other ...
When is it Too Late for Aortic Valve Surgery
... other patients, hypertrophy fails to normalise wall stress causing the abnormal afterload to reduce ventricular ejection, reducing cardiac output, adding to the heart failure syndrome.24 ...
... other patients, hypertrophy fails to normalise wall stress causing the abnormal afterload to reduce ventricular ejection, reducing cardiac output, adding to the heart failure syndrome.24 ...
File - MyScienceClassInfo
... reduce heart’s oxygen demand by decreasing heart rate. • Prevent development of myocardial ischemia and pain ...
... reduce heart’s oxygen demand by decreasing heart rate. • Prevent development of myocardial ischemia and pain ...
roles of oxidative stress and the mineralocorticoid receptor in
... Reactive oxygen species (ROS), which are generated physiologically by cellular metabolism, have been implicated in cardiac functional damage.4, 7) Increased oxidative stress is also thought to contribute to MetS,8) possibly as a result in part of the ROS-induced production of adipocytokines.4) The f ...
... Reactive oxygen species (ROS), which are generated physiologically by cellular metabolism, have been implicated in cardiac functional damage.4, 7) Increased oxidative stress is also thought to contribute to MetS,8) possibly as a result in part of the ROS-induced production of adipocytokines.4) The f ...
Heart rate within male crayfish
... elevated (Huber et al., 1997a,b). Lobsters injected with 5-HT into their circulatory systems assume a dominant posture with their chelipeds spread out and raised, with the abdomen semi-flexed (HarrisWarrick and Kravitz, 1984). Such a posture of the chelipeds is termed a ‘meral spread’ and is presume ...
... elevated (Huber et al., 1997a,b). Lobsters injected with 5-HT into their circulatory systems assume a dominant posture with their chelipeds spread out and raised, with the abdomen semi-flexed (HarrisWarrick and Kravitz, 1984). Such a posture of the chelipeds is termed a ‘meral spread’ and is presume ...
Secondary Cardiac Pleomorphic Rhabdomyosarcoma – A
... Metastatic heart involvement is gaining increased attention. It has been recognized that heart metastases are more common (at least 2% of all the disseminated cancers) than it was previously thought. However, secondary heart tumours, especially those arising in the context of the cardiac wall, usual ...
... Metastatic heart involvement is gaining increased attention. It has been recognized that heart metastases are more common (at least 2% of all the disseminated cancers) than it was previously thought. However, secondary heart tumours, especially those arising in the context of the cardiac wall, usual ...
Ventricular mass index using magnetic resonance imaging
... limited precision, they are narrower than for Doppler ECHO in the same group of subjects. The method used for indexing RVM has not been previously described in pulmonary hypertension. A closer agreement for the VMI was found in the present study when compared to that reported by KATZ et al. [8] who ...
... limited precision, they are narrower than for Doppler ECHO in the same group of subjects. The method used for indexing RVM has not been previously described in pulmonary hypertension. A closer agreement for the VMI was found in the present study when compared to that reported by KATZ et al. [8] who ...
022097 The Effect of Digoxin on Mortality and Morbidity
... tients) and were in normal sinus rhythm. Patients with heart failure and a left ventricular ejection fraction of more than 0.45 (988 patients) were enrolled in an ancillary trial conducted parallel to the main study. The diagnosis of heart failure was based on current or past clinical symptoms (limi ...
... tients) and were in normal sinus rhythm. Patients with heart failure and a left ventricular ejection fraction of more than 0.45 (988 patients) were enrolled in an ancillary trial conducted parallel to the main study. The diagnosis of heart failure was based on current or past clinical symptoms (limi ...
Right ventricular function in systemic hypertension
... is not a single factor of ventricular filling abnormalities. Diastole is not only a passive process. The active transport of calcium from sarcoplasm to sarcoplasmic reticulum is an energy-dependent process.33 The utilization of energy exceeds 15% of total energy consumption during each cardiac cycle ...
... is not a single factor of ventricular filling abnormalities. Diastole is not only a passive process. The active transport of calcium from sarcoplasm to sarcoplasmic reticulum is an energy-dependent process.33 The utilization of energy exceeds 15% of total energy consumption during each cardiac cycle ...
Tachycardia-dependent bilateral bundle branch block in
... absence of previous bundle branch block (BBB), preexcitation or drug effect. Physiologically, aberrant conduction occurs primarily by rate-dependent block [1]. ...
... absence of previous bundle branch block (BBB), preexcitation or drug effect. Physiologically, aberrant conduction occurs primarily by rate-dependent block [1]. ...
cardiovascular dynamics of the chelonia during apnoea and lung
... The blood pressures in the arteries were measured with Sanborn 267 B transducers.. When these manometers were connected to cannulae of PP25 tubing 25-35 c m l° n 8 the undamped natural frequency of the whole recording system was 45 c/s, with a damping value 37 % of critical. Bio-Tech BT 70 transduce ...
... The blood pressures in the arteries were measured with Sanborn 267 B transducers.. When these manometers were connected to cannulae of PP25 tubing 25-35 c m l° n 8 the undamped natural frequency of the whole recording system was 45 c/s, with a damping value 37 % of critical. Bio-Tech BT 70 transduce ...
Point /Counterpoint - Circulation Research
... unstained cells. Importantly, the claim has been made that the consistency in the fraction of myocytes labeled by BrdU over time is a demonstration of the lack of cell division, whereas an increase in labeling index would be indicative of cell multiplication.87 The latter implies that BrdU, per se, ...
... unstained cells. Importantly, the claim has been made that the consistency in the fraction of myocytes labeled by BrdU over time is a demonstration of the lack of cell division, whereas an increase in labeling index would be indicative of cell multiplication.87 The latter implies that BrdU, per se, ...
Supraventricular Arrhythmias
... electrical impulse propagates down the normal His Purkinje system similar to normal sinus rhythm • Distinct from ventricular tachycardia which only originates in the ventricles ...
... electrical impulse propagates down the normal His Purkinje system similar to normal sinus rhythm • Distinct from ventricular tachycardia which only originates in the ventricles ...
Articles in PresS. Am J Physiol Heart Circ Physiol (January 22, 2016
... sea level (26, 32, 35, 42). Interestingly, the severity of this hypoxemia is less during ...
... sea level (26, 32, 35, 42). Interestingly, the severity of this hypoxemia is less during ...
Pediatric Cardiology Fellowship Training Program
... surgery where no such program previously exists. Dr. Beaton conducts grant-funded research on rheumatic heart disease and has conducted multiple trips with fellows for large-scale screening of school children, assessing the psychosocial impact of rheumatic heart disease, and interfacing with local t ...
... surgery where no such program previously exists. Dr. Beaton conducts grant-funded research on rheumatic heart disease and has conducted multiple trips with fellows for large-scale screening of school children, assessing the psychosocial impact of rheumatic heart disease, and interfacing with local t ...
Left Ventricular Dynamic Geometry in the Intact and Open Chest Dog
... stretching the rubber band shown in Figure 3. Lines I and II change length but not direction when the rubber band is stretched. These two lines are parallel FIGURE 2. The polar decomposition theorem states that any hoto the principal directions of the deformation; they mogeneous deformation can be d ...
... stretching the rubber band shown in Figure 3. Lines I and II change length but not direction when the rubber band is stretched. These two lines are parallel FIGURE 2. The polar decomposition theorem states that any hoto the principal directions of the deformation; they mogeneous deformation can be d ...
12-Development_of_Heart
... Muscular part: primordium atrium Smooth part: right horn of sinus venosus Fossa ovalis: part of septum primum Annulus ovalis: part of septum secundum Crista terminalis: cranial part of right ...
... Muscular part: primordium atrium Smooth part: right horn of sinus venosus Fossa ovalis: part of septum primum Annulus ovalis: part of septum secundum Crista terminalis: cranial part of right ...
BNP Levels Predict Outcome in Pediatric Heart Failure Patients
... failure (HF) has not been well demonstrated. This study was designed to determine whether BNP levels predict outcomes in patients with moderate symptomatic HF. Methods and Results—We investigated whether enrollment BNP levels for the Pediatric Carvedilol Trial were associated with baseline character ...
... failure (HF) has not been well demonstrated. This study was designed to determine whether BNP levels predict outcomes in patients with moderate symptomatic HF. Methods and Results—We investigated whether enrollment BNP levels for the Pediatric Carvedilol Trial were associated with baseline character ...
Cardiac function in yellowfin tuna
... from five or six beats using the Powerlab program. Power output is expressed as mW g–1 heart mass (ventricle plus atrium). Single-factor analyses of variance (ANOVAs) and regression analysis were performed with temperature, epinephrine concentration or Ca2+ concentration as the independent variable ...
... from five or six beats using the Powerlab program. Power output is expressed as mW g–1 heart mass (ventricle plus atrium). Single-factor analyses of variance (ANOVAs) and regression analysis were performed with temperature, epinephrine concentration or Ca2+ concentration as the independent variable ...
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.