Syncope - UC Irvine`s Department of Medicine
... -Orthostatic challenge (Tilt table) when suspicion of reflex mechanism -Less specific testing (e.g. Neurological evaluation) indicated only when suspicion is for nonsyncopal transient LOC ...
... -Orthostatic challenge (Tilt table) when suspicion of reflex mechanism -Less specific testing (e.g. Neurological evaluation) indicated only when suspicion is for nonsyncopal transient LOC ...
Fluid Management Strategies in Heart Failure Cover Article
... hospitalization for heart failure decompensation.1,28 In patients with hypervolemia, signs and symptoms are the tip of the iceberg in regard to congestion. Pathophysiological changes in hypervolemia include low cardiac output, arterial underfilling, elevation in left ventricular diastolic pressures, ...
... hospitalization for heart failure decompensation.1,28 In patients with hypervolemia, signs and symptoms are the tip of the iceberg in regard to congestion. Pathophysiological changes in hypervolemia include low cardiac output, arterial underfilling, elevation in left ventricular diastolic pressures, ...
Automated high-throughput measurement of body movements and
... gene in order to access specific developmental alterations [13]. Another small molecule screening strategy used fluorescence measurements of living Xenopus embryos that harbor an eGFP reporter for monitoring thyroid hormone function [14]. Altogether, these studies demonstrated that Xenopus animals a ...
... gene in order to access specific developmental alterations [13]. Another small molecule screening strategy used fluorescence measurements of living Xenopus embryos that harbor an eGFP reporter for monitoring thyroid hormone function [14]. Altogether, these studies demonstrated that Xenopus animals a ...
Science | Discovery | Innovation
... “Honoring Our Past. Shaping Our Future.” As we explore the latest advances in science, discovery, and innovation, we will look back at the groundbreaking events that made such advances possible and how what we know today will improve patient care tomorrow. We are excited about our 34th Annual Scient ...
... “Honoring Our Past. Shaping Our Future.” As we explore the latest advances in science, discovery, and innovation, we will look back at the groundbreaking events that made such advances possible and how what we know today will improve patient care tomorrow. We are excited about our 34th Annual Scient ...
Effect of respiration rate on short
... Hz) would have remained within the LF range. Conversely, if the high-frequency (HF) range had not been truncated at 0.45 Hz, the respiration rate of 30 min-1 (= 0.50 Hz) would have remained in the HF range. However, the location of our LFand HF ranges is in good accordance with the literature [4– 6] ...
... Hz) would have remained within the LF range. Conversely, if the high-frequency (HF) range had not been truncated at 0.45 Hz, the respiration rate of 30 min-1 (= 0.50 Hz) would have remained in the HF range. However, the location of our LFand HF ranges is in good accordance with the literature [4– 6] ...
document
... Phase 0 is the rapid depolarization phase. The slope of phase 0 is determined by the maximum rate of depolarization of the cell and is known. This phase is due to opening of the fast Na+ channels and the subsequent rapid increase in the membrane conductance to Na+ and a rapid influx of ionic current ...
... Phase 0 is the rapid depolarization phase. The slope of phase 0 is determined by the maximum rate of depolarization of the cell and is known. This phase is due to opening of the fast Na+ channels and the subsequent rapid increase in the membrane conductance to Na+ and a rapid influx of ionic current ...
Document
... The most common natural cause of sudden death in young persons is a disturbance in the electrical flow through the heart, called an arrhythmia (we will talk about this in detail in Chapter 3). Sometimes lethal electrical disturbances happen because of an inherited disorder of these ion channels. For ...
... The most common natural cause of sudden death in young persons is a disturbance in the electrical flow through the heart, called an arrhythmia (we will talk about this in detail in Chapter 3). Sometimes lethal electrical disturbances happen because of an inherited disorder of these ion channels. For ...
Advances in Arrhythmia and Electrophysiology
... Location and Atrial Walls Viewed from the frontal aspect of the chest, the left atrium is the most posteriorly situated of the cardiac chambers. Owing to the obliquity of the plane of the atrial septum and the different levels of the orifices of the mitral and tricuspid valves, the left atrial chamb ...
... Location and Atrial Walls Viewed from the frontal aspect of the chest, the left atrium is the most posteriorly situated of the cardiac chambers. Owing to the obliquity of the plane of the atrial septum and the different levels of the orifices of the mitral and tricuspid valves, the left atrial chamb ...
12 Heart Chapter Outline and Objectives
... Histology of the Heart (p. 331) 8. List the components of the heart wall and describe the structure and function of each. 9. Describe the structural and functional characteristics of cardiac muscle cells. Electrical Activity of the Heart (p. 332) 10. Describe the characteristics of action potentials ...
... Histology of the Heart (p. 331) 8. List the components of the heart wall and describe the structure and function of each. 9. Describe the structural and functional characteristics of cardiac muscle cells. Electrical Activity of the Heart (p. 332) 10. Describe the characteristics of action potentials ...
Transcriptional Regulation of Heart Development in Zebrafish
... see [1–3]). Recent studies have revealed an additional layer of epigenetic regulation that contributes to the tight temporal and spatial control of cardiac gene expression during development (for review see [4–6]). Misregulation of cardiac transcription programs not only results in severe developmen ...
... see [1–3]). Recent studies have revealed an additional layer of epigenetic regulation that contributes to the tight temporal and spatial control of cardiac gene expression during development (for review see [4–6]). Misregulation of cardiac transcription programs not only results in severe developmen ...
Method for puncturing the pericardial membrane by synchronizing
... risk of inadvertently penetrating the heart muscle 101 is sig ni?cantly lower if the penetration of the parietal pericardium 103 is synchronized with systole. This is due to the fact that the heart muscle 101 is moving away from the needle 107 during systole, and as shown in FIG. 2B. Thus, the discl ...
... risk of inadvertently penetrating the heart muscle 101 is sig ni?cantly lower if the penetration of the parietal pericardium 103 is synchronized with systole. This is due to the fact that the heart muscle 101 is moving away from the needle 107 during systole, and as shown in FIG. 2B. Thus, the discl ...
AN ANALYSIS OF THE TOXIC ACTIONS OF PURIFIED STREP
... given lethal and sublethal doses of highly purified streptolysin O, were characterized by conduction defects and ventricular automatism. Intravenous injection of several multiples of the Ires0 was followed within 3-4 sec by a rapid transition from normal sinus rhythm to ventricular arrhythmia, ventr ...
... given lethal and sublethal doses of highly purified streptolysin O, were characterized by conduction defects and ventricular automatism. Intravenous injection of several multiples of the Ires0 was followed within 3-4 sec by a rapid transition from normal sinus rhythm to ventricular arrhythmia, ventr ...
Myocarditis Presenting with Ventricular Arrhythmias
... al., 1986). Viral infections are the most frequent cause and account for the vast majority of cases in North America and Europe (Cooper, 2009). Cardiac symptoms that develop during myocarditis may follow after a delay of days to weeks from the beginning of the pathological process; they are quite un ...
... al., 1986). Viral infections are the most frequent cause and account for the vast majority of cases in North America and Europe (Cooper, 2009). Cardiac symptoms that develop during myocarditis may follow after a delay of days to weeks from the beginning of the pathological process; they are quite un ...
A novel role for cardiac neural crest in heart development
... been documented on days 11 and 15 of incubation after septation should have occurred (11, 12). Whereas it seems reasonable that myocardial functional changes occur after altered morphological development, an unresolved aspect of research in this model has been data showing that ventricular function ...
... been documented on days 11 and 15 of incubation after septation should have occurred (11, 12). Whereas it seems reasonable that myocardial functional changes occur after altered morphological development, an unresolved aspect of research in this model has been data showing that ventricular function ...
Multi-Lead Medics 12 Lead ECG for Acute Care Providers TABLE
... acquired a BBB secondary to a procedure known as RF (radio frequency) ablation. This procedure is performed to destroy cells (which happen to be part of the bundle branch) that cause ectopy or dangerous rhythms such as VT. Some BBB’s only occur during fast heart rates and can have defined “start and ...
... acquired a BBB secondary to a procedure known as RF (radio frequency) ablation. This procedure is performed to destroy cells (which happen to be part of the bundle branch) that cause ectopy or dangerous rhythms such as VT. Some BBB’s only occur during fast heart rates and can have defined “start and ...
Sleep, dreams, and sudden death: the case for
... profibrillatory, vagal activation can result in either beneficial or adverse effects. As will be discussed, the net effect depends on a complex interaction between neural influences and intrinsic cardiovascular factors, including heart rate, arterial blood pressure, coronary blood flow, and the elec ...
... profibrillatory, vagal activation can result in either beneficial or adverse effects. As will be discussed, the net effect depends on a complex interaction between neural influences and intrinsic cardiovascular factors, including heart rate, arterial blood pressure, coronary blood flow, and the elec ...
Heart Failure with Preserved Ejection Fraction
... Given that patients with HFpEF may not always present with clinical signs and symptoms of HF, diastolic dysfunction can go unrecognized in the general population. However, even mild dysfunction is associated with a marked increase in mortality. Therefore, it is important to employ rigorous screening ...
... Given that patients with HFpEF may not always present with clinical signs and symptoms of HF, diastolic dysfunction can go unrecognized in the general population. However, even mild dysfunction is associated with a marked increase in mortality. Therefore, it is important to employ rigorous screening ...
2014 Life threatening causes of syncope
... should be performed in all patients presenting with syncope (Brignole et al., 2004), as an abnormal ECG in the presence of syncope carries a poor prognosis and may elucidate the syncope mechanism (Colivicchi et al., 2003; Rose et al., 2009). The ECG should be inspected for evidence of sinus or AV no ...
... should be performed in all patients presenting with syncope (Brignole et al., 2004), as an abnormal ECG in the presence of syncope carries a poor prognosis and may elucidate the syncope mechanism (Colivicchi et al., 2003; Rose et al., 2009). The ECG should be inspected for evidence of sinus or AV no ...
ECG TUTORIAL for Clinicians
... QT Interval (QTc 0.44s) Poor Man's Guide to the upper limit of QT: @ 70 bpm, QT 0.40s; for every 10 bpm increase above 70 bpm subtract 0.02s, and for every 10 bpm decrease below 70 bpm add 0.02s. For example: QT 0.38 @ 80 bpm QT 0.42 @ 60 bpm Frontal Plane QRS Axis: +90° to -30° (in the adult) ...
... QT Interval (QTc 0.44s) Poor Man's Guide to the upper limit of QT: @ 70 bpm, QT 0.40s; for every 10 bpm increase above 70 bpm subtract 0.02s, and for every 10 bpm decrease below 70 bpm add 0.02s. For example: QT 0.38 @ 80 bpm QT 0.42 @ 60 bpm Frontal Plane QRS Axis: +90° to -30° (in the adult) ...
Right Atrial Anatomical Remodeling Affects Early Outcomes of
... Cardiology Division, Department of Internal Medicine, Gachon University of Medicine and Science, Incheon (J.M.); Department of Radiology, Yonsei University College of Medicine, Seoul (Y.J.H.); and Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul ( ...
... Cardiology Division, Department of Internal Medicine, Gachon University of Medicine and Science, Incheon (J.M.); Department of Radiology, Yonsei University College of Medicine, Seoul (Y.J.H.); and Division of Cardiology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul ( ...
Antitachycardia Pacing for Ventricular Tachycardia
... Relationship Between Monomorphic VT and Ventricular Fibrillation The underlying mechanism for ventricular fibrillation (VF) not associated with acute myocardial infarction is poorly understood. Ambulatory monitoring has clearly demonstrated that sustained monomorphic VT precedes some episodes of VF. ...
... Relationship Between Monomorphic VT and Ventricular Fibrillation The underlying mechanism for ventricular fibrillation (VF) not associated with acute myocardial infarction is poorly understood. Ambulatory monitoring has clearly demonstrated that sustained monomorphic VT precedes some episodes of VF. ...
Creation of a Biopacemaker: Lessons from the Sinoatrial Node
... electrical impulse for the regular, rhythmic contraction of the heart. SA node dysfunction and high-grade atrioventricular block may lead to failing impulse generation or propagation towards the ventricles. The resulting bradycardia may be life-threatening and is currently treated with implantation ...
... electrical impulse for the regular, rhythmic contraction of the heart. SA node dysfunction and high-grade atrioventricular block may lead to failing impulse generation or propagation towards the ventricles. The resulting bradycardia may be life-threatening and is currently treated with implantation ...
Non-invasive detection of conduction pathways
... have been proposed to represent inter-atrial conduction block and vulnerability to AF.12,17,18 Recently, three vectorcardiographic atrial wave patterns were related to distinct inter-atrial conduction pathways.9 Magnetocardiography (MCG) is a non-invasive method complementary to ECG to examine cardi ...
... have been proposed to represent inter-atrial conduction block and vulnerability to AF.12,17,18 Recently, three vectorcardiographic atrial wave patterns were related to distinct inter-atrial conduction pathways.9 Magnetocardiography (MCG) is a non-invasive method complementary to ECG to examine cardi ...