Mechanisms of Atrial Paralysis due to Atrial Fibrillation
... material.'' The changes were most pronounced in patients with chronic AF but it was not clear whether they were due to AF or the underlying structural heart disease. An extensive histological study on structural remodeling in human right atria was published by Aime-Sempe in 1999/" In tissue sections ...
... material.'' The changes were most pronounced in patients with chronic AF but it was not clear whether they were due to AF or the underlying structural heart disease. An extensive histological study on structural remodeling in human right atria was published by Aime-Sempe in 1999/" In tissue sections ...
Acceleration of Ca2+ Waves in Monocrotaline - J
... (C) of Ctr- and MCT-rats. They were significantly larger in the MCT-rats. LV, left ventricle; IVS, intraventricular septum. *P<0.01 vs. Ctr-rats. (D) Representative recordings of action potential (Top), developed force (Middle) and Ca2+ transient (Bottom) in the Ctr- (red lines, 21.8°C, experiment n ...
... (C) of Ctr- and MCT-rats. They were significantly larger in the MCT-rats. LV, left ventricle; IVS, intraventricular septum. *P<0.01 vs. Ctr-rats. (D) Representative recordings of action potential (Top), developed force (Middle) and Ca2+ transient (Bottom) in the Ctr- (red lines, 21.8°C, experiment n ...
2012 HRS/EHRA/ECAS Expert Consensus Statement on Catheter
... the European Cardiac Arrhythmia Society and charged with defining the indications, techniques, and outcomes of this procedure. Included within this document are recommendations pertinent to the design of clinical trials in the field of AF ablation, including definitions relevant to this topic. This ...
... the European Cardiac Arrhythmia Society and charged with defining the indications, techniques, and outcomes of this procedure. Included within this document are recommendations pertinent to the design of clinical trials in the field of AF ablation, including definitions relevant to this topic. This ...
Sanders: Mosby`s Paramedic Textbook, Revised 3 Edition
... Suddenly, her eyes roll back and her head slumps limply to the side. As you realize she has no carotid pulse, you note a chaotic rhythm on the monitor and recognize that she is in ventricular fibrillation. ...
... Suddenly, her eyes roll back and her head slumps limply to the side. As you realize she has no carotid pulse, you note a chaotic rhythm on the monitor and recognize that she is in ventricular fibrillation. ...
Syncope: Overview and approach to management
... found and treated [10,11]. Syncope can cause injuries. Injuries from syncope occur in 17–35% of patients [12–16]. When injuries occur, syncope is often suspected to be caused by a serious, life-threatening, or cardiac cause, but data conflict [16,17]. Sudden, unexpected loss of consciousness (someti ...
... found and treated [10,11]. Syncope can cause injuries. Injuries from syncope occur in 17–35% of patients [12–16]. When injuries occur, syncope is often suspected to be caused by a serious, life-threatening, or cardiac cause, but data conflict [16,17]. Sudden, unexpected loss of consciousness (someti ...
12543_FULLTEXT
... Myocardial strain is increasingly used in determination of myocardial function in the medical field due to its ability to detect cardiac diseases in the early stages, its ability to quantify regional myocardial function and its prognostic power. A number of methods have been developed to measure myo ...
... Myocardial strain is increasingly used in determination of myocardial function in the medical field due to its ability to detect cardiac diseases in the early stages, its ability to quantify regional myocardial function and its prognostic power. A number of methods have been developed to measure myo ...
Conference program - International Society of Electrocardiology
... 15:30–15:45 Ventricular repolarization behavior of high performance athletes analyzed by body surface potential mapping in two different training regimens. C.A. Pastore (Brazil) (Ab. O-01) 15:45–16:00 Repolarization duration as a prognostic marker of cardiac death in patients with anterior myocardia ...
... 15:30–15:45 Ventricular repolarization behavior of high performance athletes analyzed by body surface potential mapping in two different training regimens. C.A. Pastore (Brazil) (Ab. O-01) 15:45–16:00 Repolarization duration as a prognostic marker of cardiac death in patients with anterior myocardia ...
Mapping and Investigation of Atrial Electrogram Fractionation in
... Many people contributed directly and indirectly to the completion of this work. First, I would like to express my sincere gratitude to my supervisors, Dr. Fernando S. Schlindwein and Prof. G. André Ng, for their trust, guidance, insights, constant support and critical analysis throughout this work. ...
... Many people contributed directly and indirectly to the completion of this work. First, I would like to express my sincere gratitude to my supervisors, Dr. Fernando S. Schlindwein and Prof. G. André Ng, for their trust, guidance, insights, constant support and critical analysis throughout this work. ...
Stretch-induced increase in cardiac contractility is independent of
... on myoplasmic [Ca2+] is controversial. We measured LV pressure (LVP) and [Ca2+] as a function of intra-LV stretch in guinea pig intact hearts before and after 15 min global stunning perfusion with streptomycin (STM), a stretchactivated channel blocker. LV wall [Ca2+] was measured by indo-1 fluores ...
... on myoplasmic [Ca2+] is controversial. We measured LV pressure (LVP) and [Ca2+] as a function of intra-LV stretch in guinea pig intact hearts before and after 15 min global stunning perfusion with streptomycin (STM), a stretchactivated channel blocker. LV wall [Ca2+] was measured by indo-1 fluores ...
ACCF/ASE/AHA/ASNC/HFSA/HRS/SCAI/SCCM/SCCT/SCMR 2011
... exam; 4) for early follow-up without change in clinical status; and 5) for late follow-up without change in clinical status. Certain specific clinical scenarios were addressed with additional focused indications. The indications were constructed by experts in echocardiography and in other fields and ...
... exam; 4) for early follow-up without change in clinical status; and 5) for late follow-up without change in clinical status. Certain specific clinical scenarios were addressed with additional focused indications. The indications were constructed by experts in echocardiography and in other fields and ...
PDF
... transcript is upregulated in damaged tissues. For example, adiponectin mRNA is detected in the liver of mice after carbon tetrachloride-induced hepatic injury [29], and oxidative stress upregulates adiponectin mRNA in skeletal muscle cells [30]. With regard to the heart, adiponectin protein is detec ...
... transcript is upregulated in damaged tissues. For example, adiponectin mRNA is detected in the liver of mice after carbon tetrachloride-induced hepatic injury [29], and oxidative stress upregulates adiponectin mRNA in skeletal muscle cells [30]. With regard to the heart, adiponectin protein is detec ...
Cardioacceleratory function of the neurohormone CCAP in the
... Crustacean cardioactive peptide (CCAP) is a highly conserved arthropod neurohormone that is involved in ecdysis, hormone release and the modulation of muscle contractions. Here, we determined the CCAP gene structure in the malaria mosquito Anopheles gambiae, assessed the developmental expression of ...
... Crustacean cardioactive peptide (CCAP) is a highly conserved arthropod neurohormone that is involved in ecdysis, hormone release and the modulation of muscle contractions. Here, we determined the CCAP gene structure in the malaria mosquito Anopheles gambiae, assessed the developmental expression of ...
Coronary artery anomalies - Kings College
... text, with particular attention to images obtained in vivo using non-invasive imaging. We have divided this article into three groups, according to their frequency in the general population: Normal, normal variant and anomaly. Although congenital coronary artery anomalies are relatively uncommon, th ...
... text, with particular attention to images obtained in vivo using non-invasive imaging. We have divided this article into three groups, according to their frequency in the general population: Normal, normal variant and anomaly. Although congenital coronary artery anomalies are relatively uncommon, th ...
isolated heart systems
... Perfusion and Prevents Measurement Artifact • Provides a valuable tool for the researcher who wants to study cardiac function and metabolism • Combines the advantages of an isolated organ preparation with in situ-like perfusion features • Allows a more comprehensive monitoring of functional paramete ...
... Perfusion and Prevents Measurement Artifact • Provides a valuable tool for the researcher who wants to study cardiac function and metabolism • Combines the advantages of an isolated organ preparation with in situ-like perfusion features • Allows a more comprehensive monitoring of functional paramete ...
Right Ventricular Systolic Function
... ventricular interaction. Several studies have demonstrated alterations in the normal end-systolic septal shape and position with alterations in systolic loading conditions. For instance, right ventricular hypertension caused a progressive leftward shift in septal position during systole.32 Pulmonary ...
... ventricular interaction. Several studies have demonstrated alterations in the normal end-systolic septal shape and position with alterations in systolic loading conditions. For instance, right ventricular hypertension caused a progressive leftward shift in septal position during systole.32 Pulmonary ...
8 Proximal Anomalous Connections of Coronary Arteries in Adults
... respectively, in adult populations. The diagnosis of ANOCOR is sometimes fortuitous in adults undergoing a coronary angiography to detect a coronary artery disease (CAD). The absence of diagnosis in young people may have severe consequences with sudden death occurring frequently during intensive exe ...
... respectively, in adult populations. The diagnosis of ANOCOR is sometimes fortuitous in adults undergoing a coronary angiography to detect a coronary artery disease (CAD). The absence of diagnosis in young people may have severe consequences with sudden death occurring frequently during intensive exe ...
AHA guidelines - Boston University Medical Campus
... strenuous exertion in the upright position, depending on genetic endowment and level of training. HR Response The immediate response of the cardiovascular system to exercise is an increase in HR that is attributable to a decrease in vagal tone, followed by an increase in sympathetic outflow.5 During ...
... strenuous exertion in the upright position, depending on genetic endowment and level of training. HR Response The immediate response of the cardiovascular system to exercise is an increase in HR that is attributable to a decrease in vagal tone, followed by an increase in sympathetic outflow.5 During ...
2013 Exercise Standards for Testing and Training
... strenuous exertion in the upright position, depending on genetic endowment and level of training. HR Response The immediate response of the cardiovascular system to exercise is an increase in HR that is attributable to a decrease in vagal tone, followed by an increase in sympathetic outflow.5 During ...
... strenuous exertion in the upright position, depending on genetic endowment and level of training. HR Response The immediate response of the cardiovascular system to exercise is an increase in HR that is attributable to a decrease in vagal tone, followed by an increase in sympathetic outflow.5 During ...
Exercise Standards for Testing and Training A Scientific Statement
... strenuous exertion in the upright position, depending on genetic endowment and level of training. HR Response The immediate response of the cardiovascular system to exercise is an increase in HR that is attributable to a decrease in vagal tone, followed by an increase in sympathetic outflow.5 During ...
... strenuous exertion in the upright position, depending on genetic endowment and level of training. HR Response The immediate response of the cardiovascular system to exercise is an increase in HR that is attributable to a decrease in vagal tone, followed by an increase in sympathetic outflow.5 During ...
Exercise Standards for Testing and Training
... strenuous exertion in the upright position, depending on genetic endowment and level of training. HR Response The immediate response of the cardiovascular system to exercise is an increase in HR that is attributable to a decrease in vagal tone, followed by an increase in sympathetic outflow.5 During ...
... strenuous exertion in the upright position, depending on genetic endowment and level of training. HR Response The immediate response of the cardiovascular system to exercise is an increase in HR that is attributable to a decrease in vagal tone, followed by an increase in sympathetic outflow.5 During ...
Exercise Standards for Testing and Training A Scientific Statement
... strenuous exertion in the upright position, depending on genetic endowment and level of training. HR Response The immediate response of the cardiovascular system to exercise is an increase in HR that is attributable to a decrease in vagal tone, followed by an increase in sympathetic outflow.5 During ...
... strenuous exertion in the upright position, depending on genetic endowment and level of training. HR Response The immediate response of the cardiovascular system to exercise is an increase in HR that is attributable to a decrease in vagal tone, followed by an increase in sympathetic outflow.5 During ...
Analysis of myosin heavy chain functionality in the heart.
... heart preparation. Cardiac contractility ex vivo was measured in the Langendorff heart preparations perfused with Krebs-Henseleit solution containing 5.5 mM glucose at 37°C and 55 mmHg aortic pressure as described previously (17). Measurement of cell shortening and [Ca2⫹]i transients in single cardi ...
... heart preparation. Cardiac contractility ex vivo was measured in the Langendorff heart preparations perfused with Krebs-Henseleit solution containing 5.5 mM glucose at 37°C and 55 mmHg aortic pressure as described previously (17). Measurement of cell shortening and [Ca2⫹]i transients in single cardi ...
Spatio-temporal Evolution and Prediction of Action Potential
... [Ca2+]i in the genesis of EM alternans. Despite the important role of [Ca2+]i in the development of EM alternans, no criteria has been proposed to predict the onset of [Ca2+]i and EM alternans. Various theories have been put forward to explain how impaired calcium handling can induce calcium and AP ...
... [Ca2+]i in the genesis of EM alternans. Despite the important role of [Ca2+]i in the development of EM alternans, no criteria has been proposed to predict the onset of [Ca2+]i and EM alternans. Various theories have been put forward to explain how impaired calcium handling can induce calcium and AP ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.