the cardioregulatory system of crayfish
... 32 msec. The records in Fig. 3B were taken during normal heart activity while the animal was motionless and unstimulated. Several properties characterize the cardioinhibitor discharge. First, the spike was always intermediate in amplitude, which suggests that the cardioinhibitor is one of the 10-15 ...
... 32 msec. The records in Fig. 3B were taken during normal heart activity while the animal was motionless and unstimulated. Several properties characterize the cardioinhibitor discharge. First, the spike was always intermediate in amplitude, which suggests that the cardioinhibitor is one of the 10-15 ...
electrocardiographic diagnosis of left ventricular hypertrophy
... Fifty patients of either sex between the ages of 13 – 65 years who were provisionally diagnosed by the cardiologist on the basis of clinical signs and symptoms, for LVH were included in the study. Obese, smokers, and patients with physical abnormalities of chest wall such as kyphosis or scoliosis we ...
... Fifty patients of either sex between the ages of 13 – 65 years who were provisionally diagnosed by the cardiologist on the basis of clinical signs and symptoms, for LVH were included in the study. Obese, smokers, and patients with physical abnormalities of chest wall such as kyphosis or scoliosis we ...
The Effects of Maternal Systemic Lupus Erythematosus on the
... stillbirths (Mok and Wong 2001). Although certain studies suggest that SLE-associated flares increase during pregnancy, other studies show no change in the number of disease flares during pregnancy (Mok and Wong 2001). These differences likely occur because of a discrepancy in the definition of lupu ...
... stillbirths (Mok and Wong 2001). Although certain studies suggest that SLE-associated flares increase during pregnancy, other studies show no change in the number of disease flares during pregnancy (Mok and Wong 2001). These differences likely occur because of a discrepancy in the definition of lupu ...
Keeping Your Heart Healthy After Treatment for Childhood Cancer
... or varsity team sports should discuss appropriate guidelines and a plan for ongoing monitoring with their cardiologist. What other conditions or activities can make heart problems worsen? A heart affected by anthracyclines and chest radiation may not be able to handle the stress of certain condition ...
... or varsity team sports should discuss appropriate guidelines and a plan for ongoing monitoring with their cardiologist. What other conditions or activities can make heart problems worsen? A heart affected by anthracyclines and chest radiation may not be able to handle the stress of certain condition ...
Those features are 1. Respiratory variation in ventricular filling 2
... and it is usually 6cm/sec or less in patients with a myopathy. In contrast, e’ is usually preserved or even increased in constrictive pericarditis since the lateral motion of the heart is limited by the constrictive pericardium. Furthermore, the medial mitral annular e’ velocity is usually greater t ...
... and it is usually 6cm/sec or less in patients with a myopathy. In contrast, e’ is usually preserved or even increased in constrictive pericarditis since the lateral motion of the heart is limited by the constrictive pericardium. Furthermore, the medial mitral annular e’ velocity is usually greater t ...
Nutrition Guideline Cardiovascular Care Heart Failure
... guidelines at this time. Alcohol recommendations are based on the severity of HF and on individual assessment. Light to moderate alcohol intake may lower risk of all-cause mortality in some people with HF. People with alcoholic cardiomyopathy should abstain from alcohol to improve HF symptoms or out ...
... guidelines at this time. Alcohol recommendations are based on the severity of HF and on individual assessment. Light to moderate alcohol intake may lower risk of all-cause mortality in some people with HF. People with alcoholic cardiomyopathy should abstain from alcohol to improve HF symptoms or out ...
Slide 1
... • Sudden cardiac arrest often occurs without warning. It’s triggered by an electrical malfunction in the heart that causes an irregular heartbeat (arrhythmia). With its pumping action disrupted, the heart cannot send blood to the brain, lungs and other organs. Seconds later, a person loses conscious ...
... • Sudden cardiac arrest often occurs without warning. It’s triggered by an electrical malfunction in the heart that causes an irregular heartbeat (arrhythmia). With its pumping action disrupted, the heart cannot send blood to the brain, lungs and other organs. Seconds later, a person loses conscious ...
The Johns Hopkins Arrhythmia Service A guide for patients and their families
... PSVT may occur at any age and commonly occurs in patients who have no other types of heart disease. Patients with PSVT typically describe a rapid, or racing, regular heartbeat (between 130 and 230 beats per minute) that starts and stops abruptly. It is commonly misdiagnosed as a panic attack. With t ...
... PSVT may occur at any age and commonly occurs in patients who have no other types of heart disease. Patients with PSVT typically describe a rapid, or racing, regular heartbeat (between 130 and 230 beats per minute) that starts and stops abruptly. It is commonly misdiagnosed as a panic attack. With t ...
ACUPUNCTURE AND ARRHYTHMIAS AND HEART FAILURE
... Premature beats are the most common type of arrhythmia. They are harmless most of the time and often cause no symptoms. When symptoms do occur, they usually feel like fluttering in the chest or a feeling of a skipped heartbeat. Usually, premature beats need no treatment, especially in healthy people ...
... Premature beats are the most common type of arrhythmia. They are harmless most of the time and often cause no symptoms. When symptoms do occur, they usually feel like fluttering in the chest or a feeling of a skipped heartbeat. Usually, premature beats need no treatment, especially in healthy people ...
Abnormal cardiac and skeletal muscle mitochondrial function in
... specific mitochondrial enzyme subunits. Large-scale mtDNA deletions were found to be more likely present in myocardial tissue of paced as compared to control animals, albeit at a relatively low proportion of mtDNA molecules (,0.01% of wild-type). In addition, the reduction in complex III and V activ ...
... specific mitochondrial enzyme subunits. Large-scale mtDNA deletions were found to be more likely present in myocardial tissue of paced as compared to control animals, albeit at a relatively low proportion of mtDNA molecules (,0.01% of wild-type). In addition, the reduction in complex III and V activ ...
Holter Monitoring and Cardiac Event Recording
... Analysis of the recording. At the conclusion of the recording period, the tape is analyzed using a scanning system consisting of an analog to digital converter, microprocessor, and specialized software (Figure 2B). Most systems are capable of fully-automated analysis, although this usually results i ...
... Analysis of the recording. At the conclusion of the recording period, the tape is analyzed using a scanning system consisting of an analog to digital converter, microprocessor, and specialized software (Figure 2B). Most systems are capable of fully-automated analysis, although this usually results i ...
Safety and efficacy of exercise training in
... (with 6 representing no exertion and 20 maximal exertion) [11], and gas exchange were also analysed [12]. Cardiopulmonary exercise testing and stress Doppler echocardiography were carried out during supine bicycle exercise without oxygen supply as described previously [1]. Systolic pulmonary artery ...
... (with 6 representing no exertion and 20 maximal exertion) [11], and gas exchange were also analysed [12]. Cardiopulmonary exercise testing and stress Doppler echocardiography were carried out during supine bicycle exercise without oxygen supply as described previously [1]. Systolic pulmonary artery ...
H P O L
... pulmonary venous and left atrial pressure in diastole, except in patients with mitral valve disease or pulmonary veno-occlusive disease. It has been previously reported that in patients with PH, the PAWP and LVEDP are frequently discordant [4]. In that series, 37% of patients with suspected PAH base ...
... pulmonary venous and left atrial pressure in diastole, except in patients with mitral valve disease or pulmonary veno-occlusive disease. It has been previously reported that in patients with PH, the PAWP and LVEDP are frequently discordant [4]. In that series, 37% of patients with suspected PAH base ...
Increases in serum levels of troponin I are associated
... completed, and the patients were maintained on vasoactive support at the time of the echocardiogram. Standard measures of left ventricular systolic function including ejection fraction (EF) and fractional shortening (FS) were calculated, in the case of EF by using a twodimensional apical four-chambe ...
... completed, and the patients were maintained on vasoactive support at the time of the echocardiogram. Standard measures of left ventricular systolic function including ejection fraction (EF) and fractional shortening (FS) were calculated, in the case of EF by using a twodimensional apical four-chambe ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... Although revascularization procedures by percutaneous intervention or bypass surgery are largely used in the treatment of ischemic heart disease, there remains a relatively large number of patients with refractory angina. These “no options” patients frequently have diffuse coronary disease without a ...
... Although revascularization procedures by percutaneous intervention or bypass surgery are largely used in the treatment of ischemic heart disease, there remains a relatively large number of patients with refractory angina. These “no options” patients frequently have diffuse coronary disease without a ...
Prognosis of Negative Adenosine Stress Magnetic
... negative predictive value of a regional wall motion abnormality, delayed enhancement, abnormal adenosine perfusion, and any CMR abnormality in predicting an adverse outcome are given in Table 2. Delayed enhancement indicative of MI had a sensitivity of only 55%, and a regional wall motion abnormalit ...
... negative predictive value of a regional wall motion abnormality, delayed enhancement, abnormal adenosine perfusion, and any CMR abnormality in predicting an adverse outcome are given in Table 2. Delayed enhancement indicative of MI had a sensitivity of only 55%, and a regional wall motion abnormalit ...
Medtronic Coronary Stents
... narrower, more tortuous arteries with more diffuse disease and persistently elevated bloodsugar levels. All of these factors can increase the rate of procedural complications and long-term safety risks. As a result, many such patients have undergone open heart surgery, which is more invasive and req ...
... narrower, more tortuous arteries with more diffuse disease and persistently elevated bloodsugar levels. All of these factors can increase the rate of procedural complications and long-term safety risks. As a result, many such patients have undergone open heart surgery, which is more invasive and req ...
Cardiovascular - American Physiological Society
... CV 57. Explain how Poiseuille’s Law influences resistance to flow. Use it to calculate changes in resistance in a rigid tube (blood vessel). Explain the deviations from Poiseuille’s law predictions that occur in distensible blood vessels. CV 58. Understand the relationship between flow, velocity, an ...
... CV 57. Explain how Poiseuille’s Law influences resistance to flow. Use it to calculate changes in resistance in a rigid tube (blood vessel). Explain the deviations from Poiseuille’s law predictions that occur in distensible blood vessels. CV 58. Understand the relationship between flow, velocity, an ...
Weight and Symptom Diary for Self
... The complex work of self-monitoring is an important behavior for self- management required for various chronic illnesses such as diabetes, hypertension, and HF. Coping strategies for chronic illness include obtaining knowledge and skill for ongoing self-care that involves developing Ban awareness of ...
... The complex work of self-monitoring is an important behavior for self- management required for various chronic illnesses such as diabetes, hypertension, and HF. Coping strategies for chronic illness include obtaining knowledge and skill for ongoing self-care that involves developing Ban awareness of ...
Bradycardia and Heart Block
... conduction block in one of the fascicles, it is called fascicular block (you may also hear the older term “hemiblock”). Isolated fascicular blocks may slightly prolong the QRS (0.10 - 0.12 sec). Fascicular blocks alone do not require specific treatment, but may indicate underlying structural heart d ...
... conduction block in one of the fascicles, it is called fascicular block (you may also hear the older term “hemiblock”). Isolated fascicular blocks may slightly prolong the QRS (0.10 - 0.12 sec). Fascicular blocks alone do not require specific treatment, but may indicate underlying structural heart d ...
Systematizing Inpatient Referral to Cardiac Rehabilitation: A joint
... promote patient participation” (p. e100)35. Appropriate cardiac patients are defined as those who have experienced an acute coronary syndrome, chronic stable angina or heart failure, PCI, CABGS, cardiac valve surgery, or cardiac transplantation2. Other cardiac patients can be considered on an indivi ...
... promote patient participation” (p. e100)35. Appropriate cardiac patients are defined as those who have experienced an acute coronary syndrome, chronic stable angina or heart failure, PCI, CABGS, cardiac valve surgery, or cardiac transplantation2. Other cardiac patients can be considered on an indivi ...
Exercise Tolerance Testing - Cardiac and Stroke Networks in
... It has been found that when RBBB develops during exercise (usually at slower heart rates rather than maximal heart rate) it is likely to be associated with coronary disease or other types of myocardial abnormality. Left Bundle Branch Block (LBBB) This tends to be associated with a decrease in the le ...
... It has been found that when RBBB develops during exercise (usually at slower heart rates rather than maximal heart rate) it is likely to be associated with coronary disease or other types of myocardial abnormality. Left Bundle Branch Block (LBBB) This tends to be associated with a decrease in the le ...
Chapter 13-cardiac 檔案
... ventricle 左心室 allows it to generate the force necessary to pump blood throughout the body Although the entire heart muscle functions as a unit, atrial 心房的 muscle and ventricular 心室的 muscle are physically anchored 固定to and separated 分隔 by a layer of fibrous connective tissue called the fibrous skel ...
... ventricle 左心室 allows it to generate the force necessary to pump blood throughout the body Although the entire heart muscle functions as a unit, atrial 心房的 muscle and ventricular 心室的 muscle are physically anchored 固定to and separated 分隔 by a layer of fibrous connective tissue called the fibrous skel ...
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.