Pericardial Diseases: Tamponade and constriction
... autosomal recessive disorder, primarily found in the Finnish population that can lead to congestive heart failure in early adult life and is partially characterized by the development of constrictive pericarditis in some affected individuals. TEE findings of constrictive pericarditis will be discuss ...
... autosomal recessive disorder, primarily found in the Finnish population that can lead to congestive heart failure in early adult life and is partially characterized by the development of constrictive pericarditis in some affected individuals. TEE findings of constrictive pericarditis will be discuss ...
Widening Indications of Pacemakers - The Association of Physicians
... indicated for patients with third-degree AV block, especially with awake heart rates of less than 40 beats per minute or pauses of longer that 3 second. AV nodal conduction abnormalities may or may not cause symptoms, but it is the most common indication for pacemaker implantation, more so, because ...
... indicated for patients with third-degree AV block, especially with awake heart rates of less than 40 beats per minute or pauses of longer that 3 second. AV nodal conduction abnormalities may or may not cause symptoms, but it is the most common indication for pacemaker implantation, more so, because ...
Alcohol and arrhythmias: a comprehensive review.
... fibrillation (AF), paroxysmal atrial tachycardia (PAT) and bundle branch blocks (7). In a study of 50 patients at London Hospital, Bridgen and Robinson reported that half of the patients had AF at some time; nodal rhythm, ventricular extra systoles, complete heart block, left and right bundle branch ...
... fibrillation (AF), paroxysmal atrial tachycardia (PAT) and bundle branch blocks (7). In a study of 50 patients at London Hospital, Bridgen and Robinson reported that half of the patients had AF at some time; nodal rhythm, ventricular extra systoles, complete heart block, left and right bundle branch ...
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... suggested that all of the information necessary to drive Cx30.2 expression within the AVCS resides in the 10.8 kb DNA fragment upstream of the Cx30.2 translational start site. In order to better define the embryonic pattern of Cx30.2-lacZ expression, we performed a detailed developmental analysis of ...
... suggested that all of the information necessary to drive Cx30.2 expression within the AVCS resides in the 10.8 kb DNA fragment upstream of the Cx30.2 translational start site. In order to better define the embryonic pattern of Cx30.2-lacZ expression, we performed a detailed developmental analysis of ...
Trans-Radial Percutaneous Coronary Intervention in
... on-screen response of catheters and angioplasty wires to normal manipulation (torquing). Consequently, although it may aid image interpretation, we found this technique unhelpful for PCI. Trans-radial coronary angiography and angioplasty have emerged as safe, feasible, and effective alternative with ...
... on-screen response of catheters and angioplasty wires to normal manipulation (torquing). Consequently, although it may aid image interpretation, we found this technique unhelpful for PCI. Trans-radial coronary angiography and angioplasty have emerged as safe, feasible, and effective alternative with ...
Cx30.2 - UT Southwestern
... suggested that all of the information necessary to drive Cx30.2 expression within the AVCS resides in the 10.8 kb DNA fragment upstream of the Cx30.2 translational start site. In order to better define the embryonic pattern of Cx30.2-lacZ expression, we performed a detailed developmental analysis of ...
... suggested that all of the information necessary to drive Cx30.2 expression within the AVCS resides in the 10.8 kb DNA fragment upstream of the Cx30.2 translational start site. In order to better define the embryonic pattern of Cx30.2-lacZ expression, we performed a detailed developmental analysis of ...
Estimation of left ventricular operating stiffness from - AJP
... (KLA, KLV-E, KLV-A, and KLV) by using 1) Pearson’s correlation with Bonferroni’s adjustment for multiple comparisons and 2) single and multiple linear regression analysis. To determine whether EDT and KLV respond in a similar manner to preload alterations, we compared PLV-ED, KLV, and EDT before and ...
... (KLA, KLV-E, KLV-A, and KLV) by using 1) Pearson’s correlation with Bonferroni’s adjustment for multiple comparisons and 2) single and multiple linear regression analysis. To determine whether EDT and KLV respond in a similar manner to preload alterations, we compared PLV-ED, KLV, and EDT before and ...
Sodium Ion Transporters as New Therapeutic Targets in Heart Failure
... Abstract: Sodium ion transporters in sarcolemma are involved in numerous vital cell functions, such as excitability, excitationcontraction coupling, energy metabolism, pH and volume regulation, development and growth. In a number of cardiac pathologies, the intracellular sodium concentration ([Na+]i ...
... Abstract: Sodium ion transporters in sarcolemma are involved in numerous vital cell functions, such as excitability, excitationcontraction coupling, energy metabolism, pH and volume regulation, development and growth. In a number of cardiac pathologies, the intracellular sodium concentration ([Na+]i ...
Atrial Flutter: Mechanisms, Clinical Features and Management
... undulation of the baseline seen in the peripheral leads, while discrete P waves can be recorded in the precordial leads. This sawtooth aspect is variable according to atrial flutter mechanisms and the underlying pathologic substrates. Common counterclockwise atrial flutter is associated with biphasi ...
... undulation of the baseline seen in the peripheral leads, while discrete P waves can be recorded in the precordial leads. This sawtooth aspect is variable according to atrial flutter mechanisms and the underlying pathologic substrates. Common counterclockwise atrial flutter is associated with biphasi ...
PVCs - Saudi Heart Association
... • The primary end point was to ascertain the presence of cases of sudden death and development of ARVD. • At the end of the follow-up, 55 pts were alive • six died, none of sudden death • 47 pts had normal ECG • In 24 patients (51%) extrasystoles were no longer present at Holter monitoring ...
... • The primary end point was to ascertain the presence of cases of sudden death and development of ARVD. • At the end of the follow-up, 55 pts were alive • six died, none of sudden death • 47 pts had normal ECG • In 24 patients (51%) extrasystoles were no longer present at Holter monitoring ...
Fasting In Vivo Delays Myocardial Cell Damage After Brief Periods
... endogenous substrates, chiefly glycogen, on myocardial function and metabolism after brief periods of total ischemia. We focused on glycogen, because it is the major endogenous substrate that the heart can utilize for energy production during ischemia, since it has been previously demonstrated that ...
... endogenous substrates, chiefly glycogen, on myocardial function and metabolism after brief periods of total ischemia. We focused on glycogen, because it is the major endogenous substrate that the heart can utilize for energy production during ischemia, since it has been previously demonstrated that ...
Advances in Arrhythmia and Electrophysiology
... indices and advancing age, hypertension, diabetes, and obesity, each of which has been identified as an independent risk factor for AF.54 –56 Increased atrial pressures due to structural heart disease also clearly potentiate prolongation of P wave indices. These disease states may share common pathw ...
... indices and advancing age, hypertension, diabetes, and obesity, each of which has been identified as an independent risk factor for AF.54 –56 Increased atrial pressures due to structural heart disease also clearly potentiate prolongation of P wave indices. These disease states may share common pathw ...
Stress-dependent cardiac remodeling occurs in the absence of
... via the tail vein, whereas Thum et al. injected antagomir via the jugular vein (9). There is also a possibility that cholesterol-conjugated chemistry has a cardioprotective effect, or antagomirs might also be more effective than LNA-modified antimiRs at inhibiting miR-21 function in cardiac fibrobla ...
... via the tail vein, whereas Thum et al. injected antagomir via the jugular vein (9). There is also a possibility that cholesterol-conjugated chemistry has a cardioprotective effect, or antagomirs might also be more effective than LNA-modified antimiRs at inhibiting miR-21 function in cardiac fibrobla ...
Right ventricular function in pulmonary
... of pulmonary vascular pressures and cardiac output, and calculation of PVR.1 These measurements allow for the quantification of the severity of pulmonary vascular disease, but PVR provides only partial description of all the forces that oppose RV flow output (or afterload),10 and cardiac output is det ...
... of pulmonary vascular pressures and cardiac output, and calculation of PVR.1 These measurements allow for the quantification of the severity of pulmonary vascular disease, but PVR provides only partial description of all the forces that oppose RV flow output (or afterload),10 and cardiac output is det ...
Sympathetic dysfunction in type 1 diabetes
... The resting and adenosine stress pressure-rate products were similar in the C and diabetic subjects (data not shown). MBF reserve during adenosine stimulation is reduced in DMAⴙ subjects. Compared with C subjects (69 ⫾ 9 ml/min/g of tissue), resting MBF was elevated in both the DC (85 ⫾ 20 ml/100 g/ ...
... The resting and adenosine stress pressure-rate products were similar in the C and diabetic subjects (data not shown). MBF reserve during adenosine stimulation is reduced in DMAⴙ subjects. Compared with C subjects (69 ⫾ 9 ml/min/g of tissue), resting MBF was elevated in both the DC (85 ⫾ 20 ml/100 g/ ...
Extending AED Safety Net Ca
... By: By Glenn W. Laub, M.D. – Defibtech CEO, chairman of cardiac surgery, director of the Heart Hospital, St. Francis Medical Center, Trenton, N.J. In a crowded Boston North Station, three bystanders waiting for a train heard a man cry out and immediately sprang into action. They removed his shirt, s ...
... By: By Glenn W. Laub, M.D. – Defibtech CEO, chairman of cardiac surgery, director of the Heart Hospital, St. Francis Medical Center, Trenton, N.J. In a crowded Boston North Station, three bystanders waiting for a train heard a man cry out and immediately sprang into action. They removed his shirt, s ...
2012 Guidelines of the Taiwan Society of Cardiology (TSOC) for the
... Plasma concentrations of natriuretic peptides are useful biomarkers in the diagnosis of heart failure and in the management of patients with established chronic heart failure. Evidence exists supporting their use for diagnosing, staging, making hospitalization/discharge decisions, and identifying pa ...
... Plasma concentrations of natriuretic peptides are useful biomarkers in the diagnosis of heart failure and in the management of patients with established chronic heart failure. Evidence exists supporting their use for diagnosing, staging, making hospitalization/discharge decisions, and identifying pa ...
USCOM: ultrasound cardiac output monitor for patients requiring
... confirm normal cardiac function, detect and quantify abnormal function, and to evaluate the effectiveness of cardiovascular therapies. The USCOM device is intended for use in a wide spectrum of patients including both adult and paediatric patients admitted to intensive care units, patients undergoin ...
... confirm normal cardiac function, detect and quantify abnormal function, and to evaluate the effectiveness of cardiovascular therapies. The USCOM device is intended for use in a wide spectrum of patients including both adult and paediatric patients admitted to intensive care units, patients undergoin ...
CARDIAC IMAGING GUIDELINES
... Troponin: a marker for ischemic injury, primarily cardiac Uninterpretable electrocardiogram (ECG): (for stress test purposes, this is very often NOT the same as ABNORMAL ECG), a baseline ECG that renders exercise interpretation invalid due to: 1. complete LEFT bundle branch block 2. ventricular pace ...
... Troponin: a marker for ischemic injury, primarily cardiac Uninterpretable electrocardiogram (ECG): (for stress test purposes, this is very often NOT the same as ABNORMAL ECG), a baseline ECG that renders exercise interpretation invalid due to: 1. complete LEFT bundle branch block 2. ventricular pace ...
Effects of Sodium Pentobarbital on Electrical and Reflex Activation of
... carotid occlusion in the dog, both before and after pentobarbital, are very variable. In some animals no change in heart rate occurred. In others there was a tremendous cardiac activation involving both acceleration and augmentation. It seems reasonable that the level of sympathetic tone varies wide ...
... carotid occlusion in the dog, both before and after pentobarbital, are very variable. In some animals no change in heart rate occurred. In others there was a tremendous cardiac activation involving both acceleration and augmentation. It seems reasonable that the level of sympathetic tone varies wide ...
AHA Scientific Statement
... survivors have simple forms of CHD such as atrial and ventricular septal defects, a significant number have more complex CHD, including 10% with defects of great complexity (such as SV) and 30% with moderately complex CHD (such as conotruncal defects and atrioventricular septal defects).14 Importanc ...
... survivors have simple forms of CHD such as atrial and ventricular septal defects, a significant number have more complex CHD, including 10% with defects of great complexity (such as SV) and 30% with moderately complex CHD (such as conotruncal defects and atrioventricular septal defects).14 Importanc ...
Task Force Report Guidelines for the diagnosis and treatment of chronic
... documented heart failure, even if severe, do not have an elevated jugular venous pressure[37]. Tachycardia is nonspecific and may be absent even in severe heart failure, particularly in the presence of beta-blocker therapy[37]. Other signs of heart failure require considerable expertise for their de ...
... documented heart failure, even if severe, do not have an elevated jugular venous pressure[37]. Tachycardia is nonspecific and may be absent even in severe heart failure, particularly in the presence of beta-blocker therapy[37]. Other signs of heart failure require considerable expertise for their de ...
Fibrillation and defibrillation of the heart
... difference in threshold as time elapses.37 59 77 In VF/tachycardia, defibrillation is accomplished by passage of sufficient electrical current through the heart to depolarize a critical mass of myocardium. The amount of current flowing through the heart depends on the energy of the shock and transth ...
... difference in threshold as time elapses.37 59 77 In VF/tachycardia, defibrillation is accomplished by passage of sufficient electrical current through the heart to depolarize a critical mass of myocardium. The amount of current flowing through the heart depends on the energy of the shock and transth ...
Comparison of Contractile Performance of Canine Atrial and
... than can ventricular muscle before optimum length is reached. At any given initial muscle length, the maximum of tension rise for atrial trabeculae amounted to at least twice that for ventricular trabeculae. At any given load up to 1.5 g/mm2, the maximum velocity of shortening of an atrial trabecula ...
... than can ventricular muscle before optimum length is reached. At any given initial muscle length, the maximum of tension rise for atrial trabeculae amounted to at least twice that for ventricular trabeculae. At any given load up to 1.5 g/mm2, the maximum velocity of shortening of an atrial trabecula ...
An Improved Method for Echographic Detection of Left
... perform and should provide data for a specific patient, rather than a so-called "normal population." Ideally, progressive left atrial enlargement would be evaluated best by serial observations of the individual patient. Cardiac ultrasound provides an easy and accurate means for making such serial ob ...
... perform and should provide data for a specific patient, rather than a so-called "normal population." Ideally, progressive left atrial enlargement would be evaluated best by serial observations of the individual patient. Cardiac ultrasound provides an easy and accurate means for making such serial ob ...
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.