Pacemaker Development in Embryonic Rat Heart Cultured
... and duration; maximum upstroke velocity was consistently lower for in oculo heart cells than for adult cells in arterially perfused hearts (see Table 1; Fig. 5). Most isolated ventricles (26 of 39 at 12 dpc) stopped beating after being implanted into the anterior eye chamber. However, by 14 days in ...
... and duration; maximum upstroke velocity was consistently lower for in oculo heart cells than for adult cells in arterially perfused hearts (see Table 1; Fig. 5). Most isolated ventricles (26 of 39 at 12 dpc) stopped beating after being implanted into the anterior eye chamber. However, by 14 days in ...
VSD
... magnitude of shunt depends on RP:RS only In case of pulmonary hypertension progressive increase of pulmonary vascular resistance with irreversible damage after six months is possible In case of restrictive VSD left http://www.dhg.org.uk/information/ventriculars ventricular dilation in long term epta ...
... magnitude of shunt depends on RP:RS only In case of pulmonary hypertension progressive increase of pulmonary vascular resistance with irreversible damage after six months is possible In case of restrictive VSD left http://www.dhg.org.uk/information/ventriculars ventricular dilation in long term epta ...
full paper
... The present step has much in common with the adaptive averaging ideas developed by Hardy et al. [34] and Sussman et al. [35], as the acquired data are used to detect motion. The whole time series of reconstructed 3D time frames is analyzed to detect the respiration-induced motion of the heart throug ...
... The present step has much in common with the adaptive averaging ideas developed by Hardy et al. [34] and Sussman et al. [35], as the acquired data are used to detect motion. The whole time series of reconstructed 3D time frames is analyzed to detect the respiration-induced motion of the heart throug ...
PERICARDIAL EFFUSION IN CANINE PATIENTS
... preventing cardiac output into the pulmonary artery. • Since blood is no longer leaving the right side of the heart, there is no venous return to the left atrium and ventricle,2 eventually resulting in cardiogenic shock manifested by lethargy, hypotension, poor pulse quality, and tachycardia. ...
... preventing cardiac output into the pulmonary artery. • Since blood is no longer leaving the right side of the heart, there is no venous return to the left atrium and ventricle,2 eventually resulting in cardiogenic shock manifested by lethargy, hypotension, poor pulse quality, and tachycardia. ...
Patients with a hypertensive response to exercise have
... valvular dysfunction, and a negative maximum exercise electrocardiogram or exercise echocardiogram for inducible myocardial ischemia. A positive (HT⫹) or negative (HT⫺) clinical history of HT was defined by elevated BP (⬎140/90 mm Hg) documented by the referring physician and treated with antihypert ...
... valvular dysfunction, and a negative maximum exercise electrocardiogram or exercise echocardiogram for inducible myocardial ischemia. A positive (HT⫹) or negative (HT⫺) clinical history of HT was defined by elevated BP (⬎140/90 mm Hg) documented by the referring physician and treated with antihypert ...
Double Outlet Right Ventricle
... • Identification of morphology • Repair of DOLV and atrioventricular concordant connection 1. With pulmonary stenosis 2. Without pulmonary stenosis ...
... • Identification of morphology • Repair of DOLV and atrioventricular concordant connection 1. With pulmonary stenosis 2. Without pulmonary stenosis ...
Effect of Hydroxyethyl Starch 130/0.4 on Blood Loss and - J
... clopidogrel expand, an increasing number of patients undergoing off-pump coronary artery bypass surgery (OPCAB) are also undergoing dual antiplatelet therapy (DAPT), with its higher risk of bleeding complications. The aim of the present study was to determine whether a moderate dose of 6% HES 130/0. ...
... clopidogrel expand, an increasing number of patients undergoing off-pump coronary artery bypass surgery (OPCAB) are also undergoing dual antiplatelet therapy (DAPT), with its higher risk of bleeding complications. The aim of the present study was to determine whether a moderate dose of 6% HES 130/0. ...
Similarities and differences between ECG signs of left bundle
... Other criteria proposed by Strauss et al. are QS or rS configuration in leads V1 and V2 and mid-QRS notching or slurring in at least two of leads V1, V2, V5, V6, I, and aVL [1]. Our simulated LBBB ECG fulfills these criteria, although notching was very subtle. In contrast, the 50 % uncoupling simula ...
... Other criteria proposed by Strauss et al. are QS or rS configuration in leads V1 and V2 and mid-QRS notching or slurring in at least two of leads V1, V2, V5, V6, I, and aVL [1]. Our simulated LBBB ECG fulfills these criteria, although notching was very subtle. In contrast, the 50 % uncoupling simula ...
Arrhythmogenic right ventricular dysplasia/cardiomyopathy versus
... form of dilated cardiomyopathy first described in 1982 [1]. It primarily affects the right ventricular myocardium with fat and/or fibrous tissue replacement of the muscle [2, 3]. The clinical manifestation of the disease varies significantly, from total absence of clinical symptoms which is most com ...
... form of dilated cardiomyopathy first described in 1982 [1]. It primarily affects the right ventricular myocardium with fat and/or fibrous tissue replacement of the muscle [2, 3]. The clinical manifestation of the disease varies significantly, from total absence of clinical symptoms which is most com ...
Innervation of the human cardiac conduction - Heart
... of nervous tissue,'4 and is therefore useful to with those recently described by Ursell et a14 show the general pattern of innervation. Use who studied the anatomical distribution of of this indicator has shown that nerve fasci- sympathetic nerves in the developing dog cles and fibres are abundant t ...
... of nervous tissue,'4 and is therefore useful to with those recently described by Ursell et a14 show the general pattern of innervation. Use who studied the anatomical distribution of of this indicator has shown that nerve fasci- sympathetic nerves in the developing dog cles and fibres are abundant t ...
Advantages and Concerns of Aquatic Exercise for Cardiovascular
... vessels that supply your heart with blood, oxygen and nutrients — become damaged or diseased. Cholesterol-containing deposits (plaque) in your arteries and inflammation are usually to blame for coronary artery disease (22).” ...
... vessels that supply your heart with blood, oxygen and nutrients — become damaged or diseased. Cholesterol-containing deposits (plaque) in your arteries and inflammation are usually to blame for coronary artery disease (22).” ...
Lipomatous Hypertrophy of the Interatrial Septum Accompanied By
... generating embryonic mesenchymal cells present on IAS to adipose tissue by a stimulator.6,7 While actual incidence cannot be determined clearly due to being asymptomatic, it was found as 1% in autopsy series.1 It is reported that LHIS generally occurs in elderly and obese patients and in some public ...
... generating embryonic mesenchymal cells present on IAS to adipose tissue by a stimulator.6,7 While actual incidence cannot be determined clearly due to being asymptomatic, it was found as 1% in autopsy series.1 It is reported that LHIS generally occurs in elderly and obese patients and in some public ...
Title Characterization of the heart muscle aniosotropy using
... The myocardium is composed of myofibers, arranged into a layered structure. These layers in the left ventricle (LV) exhibit a transmural variation in orientation, from -60° near the epicardium to +60° close to the endocardium [1]. The myofiber architecture is closely related to the mechanical [2] an ...
... The myocardium is composed of myofibers, arranged into a layered structure. These layers in the left ventricle (LV) exhibit a transmural variation in orientation, from -60° near the epicardium to +60° close to the endocardium [1]. The myofiber architecture is closely related to the mechanical [2] an ...
What are blood vessels?
... faulty valve is carefully removed, and a new valve is attached in its place. Doctors use several kinds of rep lacements for damaged heart valves. They may transplant a human ... Figure 15·5 Synthetic valves are used to replace damaged heart valves. heart valve obtained from an organ donor. Valves ta ...
... faulty valve is carefully removed, and a new valve is attached in its place. Doctors use several kinds of rep lacements for damaged heart valves. They may transplant a human ... Figure 15·5 Synthetic valves are used to replace damaged heart valves. heart valve obtained from an organ donor. Valves ta ...
Plasma Levels of Nitric Oxide in Children with
... disease and increased pulmonary blood flow. It may be partially related to the increase of pulmonary blood flow, which induces cyclic strain and shear stress on vascular endothelium(12). Endothelial injury and the resulting alteration in endothelial function cause an imbalance between the production ...
... disease and increased pulmonary blood flow. It may be partially related to the increase of pulmonary blood flow, which induces cyclic strain and shear stress on vascular endothelium(12). Endothelial injury and the resulting alteration in endothelial function cause an imbalance between the production ...
Proarrhythmic Effects Of Antiarrhythmic Drugs: Case Study
... prolongation can still lead to development of dangerous ventricular arrhythmias. A cautious approach and thorough investigations and follow up are recommended. ...
... prolongation can still lead to development of dangerous ventricular arrhythmias. A cautious approach and thorough investigations and follow up are recommended. ...
Prediction of vasovagal syncope from heart rate and blood pressure
... blood pressure or heart rate and in whom syncope did not occur (negative test). We further analyzed the tilt-negative patients in whom VVS was predicted (29 false predictions). In 24 patients (83%), this incorrect positive detection is clearly caused by artifacts (eg, patient movement) and noise pre ...
... blood pressure or heart rate and in whom syncope did not occur (negative test). We further analyzed the tilt-negative patients in whom VVS was predicted (29 false predictions). In 24 patients (83%), this incorrect positive detection is clearly caused by artifacts (eg, patient movement) and noise pre ...
3. Cardiac Output
... sympathetic nervous system (Dual supply from both divisions of A.N.S) • The ventricles are mainly supplied by the sympathetic nervous system. There is very little Parasympathetic supply of the ventricles ...
... sympathetic nervous system (Dual supply from both divisions of A.N.S) • The ventricles are mainly supplied by the sympathetic nervous system. There is very little Parasympathetic supply of the ventricles ...
paradoxical splitting of the second heart sound - Heart
... The second heart sound is caused by closure of the aortic-and pulmonary valves at the end of ventricular systole. Two components, from the separate closure of the two valves, are usually audible because of slight asynchrony of the two ventricles, aortic closure preceding pulmonary closure in normal ...
... The second heart sound is caused by closure of the aortic-and pulmonary valves at the end of ventricular systole. Two components, from the separate closure of the two valves, are usually audible because of slight asynchrony of the two ventricles, aortic closure preceding pulmonary closure in normal ...
Swimming exercise reverses aging-related contractile abnormalities
... Background: The objective of this study was to examine the effect of swimming exercise on aging-related Ca2+ handling alterations and structural abnormalities of female rat heart. Methods: For this purpose, 4-month and 24-month old female rats were used and divided into three following groups: seden ...
... Background: The objective of this study was to examine the effect of swimming exercise on aging-related Ca2+ handling alterations and structural abnormalities of female rat heart. Methods: For this purpose, 4-month and 24-month old female rats were used and divided into three following groups: seden ...
Lecture 024, Blood2 - SuperPage for Joel R. Gober, PhD.
... would have saved his life too. So, that’s I would try first before a tourniquet. Okay, so anticoagulant are just something that prevent coagulation or it can even dissolve blood clots and they interfere with the clotting mechanism and sometimes, well, blood clotting is dependent on calcium ions and ...
... would have saved his life too. So, that’s I would try first before a tourniquet. Okay, so anticoagulant are just something that prevent coagulation or it can even dissolve blood clots and they interfere with the clotting mechanism and sometimes, well, blood clotting is dependent on calcium ions and ...
AF and Venous Thromboembolism – Pathophysiology, Risk
... protective mechanism resulting in thrombosis. Arterial and venous thromboses are two pathophysiologically distinct entities with different clinical presentations and management strategies. Arterial thrombosis generally develops as a result of underlying vascular abnormalities, typically atherosclero ...
... protective mechanism resulting in thrombosis. Arterial and venous thromboses are two pathophysiologically distinct entities with different clinical presentations and management strategies. Arterial thrombosis generally develops as a result of underlying vascular abnormalities, typically atherosclero ...
Complete heart blockin rheumatoid arthritis
... weeks, 3 within 24 months, and 2 at 3 years. The causes of death in 7 of these patients were congestive cardiac failure in 4, infection in 1, intractable ventricular tachycardia in 1 (no. 26), pacemaker-induced arrhythmia in 1 (case no. 14), and the cause of death was unknown in 1 patient (no. 22), ...
... weeks, 3 within 24 months, and 2 at 3 years. The causes of death in 7 of these patients were congestive cardiac failure in 4, infection in 1, intractable ventricular tachycardia in 1 (no. 26), pacemaker-induced arrhythmia in 1 (case no. 14), and the cause of death was unknown in 1 patient (no. 22), ...
reduced left ventricular systolic function differentiate between
... increasing age and with decreasing LVEF (p < 0.05). A predicted concentration of NT-proBNP (corrected for age, sex, and serum creatinine) was determined for each patient. In patients with an NT-proBNP value less than predicted, the probability of having an LVEF of > 40% was more than 97%. This proba ...
... increasing age and with decreasing LVEF (p < 0.05). A predicted concentration of NT-proBNP (corrected for age, sex, and serum creatinine) was determined for each patient. In patients with an NT-proBNP value less than predicted, the probability of having an LVEF of > 40% was more than 97%. This proba ...
The Wetsuit Effect - Digital Scholarship @UNLV
... al. 2000). However, it is not known if wearing a wetsuit influences the risk for cardiac events. Proposing a mechanism for the relatively high number of triathlon swimming deaths has proven to be difficult and is only speculative at this point. Regarding sudden cardiac death, Tipton and Shattock (20 ...
... al. 2000). However, it is not known if wearing a wetsuit influences the risk for cardiac events. Proposing a mechanism for the relatively high number of triathlon swimming deaths has proven to be difficult and is only speculative at this point. Regarding sudden cardiac death, Tipton and Shattock (20 ...
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.