Left ventricular filling in hypertrophic cardiomyopathy - Heart
... of the left ventricle (Hansen et al., 1962; Goodwin, 1974). It has been suggested that increased elastic stiffness of the myocardium may be associated with a reduced rate of filling (Oakley, 1971) and indirect evidence for this has been obtained from the left atrial pressure pulse (Stewart et al., 1 ...
... of the left ventricle (Hansen et al., 1962; Goodwin, 1974). It has been suggested that increased elastic stiffness of the myocardium may be associated with a reduced rate of filling (Oakley, 1971) and indirect evidence for this has been obtained from the left atrial pressure pulse (Stewart et al., 1 ...
Angiotensin II Type 2 Receptors and Cardiac
... The present study may be important from a pharmacotherapeutic point of view. If AT1-R stimulation is indeed partly responsible for the increased LVM in subjects with HCM, the use of ACE inhibitors or AT1-R antagonists in this disease might be reconsidered. Both are currently not widely used in HCM, ...
... The present study may be important from a pharmacotherapeutic point of view. If AT1-R stimulation is indeed partly responsible for the increased LVM in subjects with HCM, the use of ACE inhibitors or AT1-R antagonists in this disease might be reconsidered. Both are currently not widely used in HCM, ...
the clinical value of chest leads
... effects of preponderant hypertrophy of the left ventricle. Many have expressed the opinion that all defects in intraventricular conduction have the same clinical significance and that it is not worth while to attempt to differentiate one from another. The answer to this objection is that we cannot t ...
... effects of preponderant hypertrophy of the left ventricle. Many have expressed the opinion that all defects in intraventricular conduction have the same clinical significance and that it is not worth while to attempt to differentiate one from another. The answer to this objection is that we cannot t ...
Histological architecture of cardiac myofibers composing the left
... Background: Despite the fact that the exact architecture and orientation of left ventricular myocardial fibers are critical to cardiac functions either in health or disease, it is still debated. Aim of the work: Histological demonstration of the transverse alignment of the myofibers making the left ...
... Background: Despite the fact that the exact architecture and orientation of left ventricular myocardial fibers are critical to cardiac functions either in health or disease, it is still debated. Aim of the work: Histological demonstration of the transverse alignment of the myofibers making the left ...
Minimizing Ventricular Pacing to Reduce Atrial Fibrillation in Sinus
... was present1,5-7; at least 22 hours of atrial fibrillation for at least 7 consecutive days, detected by means of diagnostic data stored in the pacemaker; and at least 22 hours of atrial fibrillation per day for fewer than 7 consecutive days if an interruption by electrical or pharmacologic cardiover ...
... was present1,5-7; at least 22 hours of atrial fibrillation for at least 7 consecutive days, detected by means of diagnostic data stored in the pacemaker; and at least 22 hours of atrial fibrillation per day for fewer than 7 consecutive days if an interruption by electrical or pharmacologic cardiover ...
Should Women Receive Left Ventricular Assist Device Support?
... Adverse events were more common in pulsatile-flow LVADs than in continuous-flow LVADs (Figure 4). There were no statistically significant sex differences in time to first infection, bleeding, or device malfunction with use of continuous- or pulsatile-flow LVADs (Figure 4A, 4B, and 4D), even after mu ...
... Adverse events were more common in pulsatile-flow LVADs than in continuous-flow LVADs (Figure 4). There were no statistically significant sex differences in time to first infection, bleeding, or device malfunction with use of continuous- or pulsatile-flow LVADs (Figure 4A, 4B, and 4D), even after mu ...
Supraventricular tachycardia associated with phentermine use
... receptors to suppress appetite and act on the sympathetic nervous system to increase resting energy expenditure. This anorectic agent became well-known in the mid-1990s when “Fen-Phen” (fenfluroxaminephentermine) produced significantly more weight loss than either of them alone resulting in widespre ...
... receptors to suppress appetite and act on the sympathetic nervous system to increase resting energy expenditure. This anorectic agent became well-known in the mid-1990s when “Fen-Phen” (fenfluroxaminephentermine) produced significantly more weight loss than either of them alone resulting in widespre ...
Progressive conduction disturbance in myotonic dystrophy
... tients in the early stages of disease. Their progression towards more severe conduction defects may cause shortness of breath, dizziness, fainting, syncope, and sudden death. The rate of progression of the conduction abnormalities is usually slow, but occasionally quick, thus making the clinical cou ...
... tients in the early stages of disease. Their progression towards more severe conduction defects may cause shortness of breath, dizziness, fainting, syncope, and sudden death. The rate of progression of the conduction abnormalities is usually slow, but occasionally quick, thus making the clinical cou ...
Cardiac Contractility
... • inhibits breakdown of cAMP by phosphodiasterase III • thereby increasing intracellular [] of cAMP • this increases inotropy and chronotropy • BUT, causes vasodilation & hypotension • should be used with a vasopressor ...
... • inhibits breakdown of cAMP by phosphodiasterase III • thereby increasing intracellular [] of cAMP • this increases inotropy and chronotropy • BUT, causes vasodilation & hypotension • should be used with a vasopressor ...
Atrial fibrillation and flutter
... Atrial fibrillation and flutter — management Persistent atrial flutter/fibrillation Two types of management strategy can be adopted — rate control and rhythm control. With rate control, the atrial arrhythmia itself is not terminated and treatment is directed at controlling the ventricular response a ...
... Atrial fibrillation and flutter — management Persistent atrial flutter/fibrillation Two types of management strategy can be adopted — rate control and rhythm control. With rate control, the atrial arrhythmia itself is not terminated and treatment is directed at controlling the ventricular response a ...
Alteration of Systolic Time Intervals in Right Ventricular
... tracing. The left ventricular ejection (LVET) was derived from the brachial arterial pressure tracing recorded at 50 mm/sec and was defined as that interval from the start of the upstroke to the midpoint of the dicrotic notch. The Q-LV interval (analogous to the Q-1 interval) was measured in all pat ...
... tracing. The left ventricular ejection (LVET) was derived from the brachial arterial pressure tracing recorded at 50 mm/sec and was defined as that interval from the start of the upstroke to the midpoint of the dicrotic notch. The Q-LV interval (analogous to the Q-1 interval) was measured in all pat ...
Impact of surgical ventricular reconstruction on stroke volume in
... Results: Overall, surgical ventricular reconstruction resulted in reductions in end-diastolic volume index (–30% 18%) and end-systolic volume index (–37% 20%), and increases in ejection fraction (21% 18% relative increase). However, stroke volume index decreased from 35 8 mL/m2 preoperativel ...
... Results: Overall, surgical ventricular reconstruction resulted in reductions in end-diastolic volume index (–30% 18%) and end-systolic volume index (–37% 20%), and increases in ejection fraction (21% 18% relative increase). However, stroke volume index decreased from 35 8 mL/m2 preoperativel ...
left atrium volume as a surrogate marker of left ventricular diastolic
... OM, Dindar B et al. Relation of left atrial peak systolic strain with left ventricular diastolic dysfunction and brain natriuretic peptide level in patients presenting with ST-elevation myocardial infarction. Cardiovasc Ultrasound ...
... OM, Dindar B et al. Relation of left atrial peak systolic strain with left ventricular diastolic dysfunction and brain natriuretic peptide level in patients presenting with ST-elevation myocardial infarction. Cardiovasc Ultrasound ...
- White Rose Research Online
... by the Simpson’s biplane methods averaged from three consecutive beats as our cut-off for LVSD.[15] In those without important neuromuscular, skeletal, pulmonary, and other conditions precluding exercise testing, formal symptomlimited treadmill-based peak cardiopulmonary exercise testing was carried ...
... by the Simpson’s biplane methods averaged from three consecutive beats as our cut-off for LVSD.[15] In those without important neuromuscular, skeletal, pulmonary, and other conditions precluding exercise testing, formal symptomlimited treadmill-based peak cardiopulmonary exercise testing was carried ...
ECG Identification of Scar-Related Ventricular Tachycardia With a
... ventricular arrhythmias (VA). Discrimination between idiopathic and scar-related LBBB pattern VA has important clinical implications. We hypothesized that the VA QRS morphology is influenced by the presence of ventricular scar, allowing ECG discrimination of VA arising from structurally normal versu ...
... ventricular arrhythmias (VA). Discrimination between idiopathic and scar-related LBBB pattern VA has important clinical implications. We hypothesized that the VA QRS morphology is influenced by the presence of ventricular scar, allowing ECG discrimination of VA arising from structurally normal versu ...
Atrial Fibrillation in the Heart Failure Population
... shortening of the atrial refractory period and loss of normal lengthening of atrial refractoriness at slower heart rates. This is termed atrial electrical remodeling and in some cases may be reversed by maintenance of sinus rhythm.7 Anatomic remodeling of the atria also occurs with prolonged AF. Fib ...
... shortening of the atrial refractory period and loss of normal lengthening of atrial refractoriness at slower heart rates. This is termed atrial electrical remodeling and in some cases may be reversed by maintenance of sinus rhythm.7 Anatomic remodeling of the atria also occurs with prolonged AF. Fib ...
State of the Art in Forensic Investigation of Sudden Cardiac Death
... described how pathologists should investigate sudden death,9Y14 but there is little consistency among centers, even in individual countries. Furthermore recent advances in the field of molecular genetics have expanded our understanding of the etiology of many lethal and heritable channelopathies lead ...
... described how pathologists should investigate sudden death,9Y14 but there is little consistency among centers, even in individual countries. Furthermore recent advances in the field of molecular genetics have expanded our understanding of the etiology of many lethal and heritable channelopathies lead ...
Volume Changes in Painful and Painless Myocardial
... Stimulation of left ventricular stretch receptors has been proposed as a possible mechanism for the occurrence of cardiac pain. Changes in left ventricular volume were continuously assessed in 12 patients during 11 spontaneous (two painful) and 12 ergometrine-induced (nine painful) ischemic attacks ...
... Stimulation of left ventricular stretch receptors has been proposed as a possible mechanism for the occurrence of cardiac pain. Changes in left ventricular volume were continuously assessed in 12 patients during 11 spontaneous (two painful) and 12 ergometrine-induced (nine painful) ischemic attacks ...
Left ventricular dysfunction following rewarming from experimental
... based on the assumption that hypothermia is associated with intravascular hypovolemia caused by plasma loss (8, 10, 32). However, experimental studies have shown that rewarming causes spontaneous return of this fluid. Thus the plasma volume levels are restored and may even become greater than before ...
... based on the assumption that hypothermia is associated with intravascular hypovolemia caused by plasma loss (8, 10, 32). However, experimental studies have shown that rewarming causes spontaneous return of this fluid. Thus the plasma volume levels are restored and may even become greater than before ...
Paper Title (use style: paper title)
... The tachycardia is caused by rapid firing. This arrhythmia is characterized by a deformation of the P wave, there is usually an increase in heart rate that begins and ends quickly, this may take a few minutes or hours. One example is depicted in Fig. 6 [5]. From the perspective of the ECG signal all ...
... The tachycardia is caused by rapid firing. This arrhythmia is characterized by a deformation of the P wave, there is usually an increase in heart rate that begins and ends quickly, this may take a few minutes or hours. One example is depicted in Fig. 6 [5]. From the perspective of the ECG signal all ...
Jorgensen_J1010 Manual_0211.indd
... Please allow 10 hours to completely recharge the battery if drained fully. Recharge in the AC operation mode: flip on the power switch at the back panel of the unit. Do not press the ON/OFF button. DO NOT charge the battery for more than 24 continuous hours. The unit may be left plugged in, but the ...
... Please allow 10 hours to completely recharge the battery if drained fully. Recharge in the AC operation mode: flip on the power switch at the back panel of the unit. Do not press the ON/OFF button. DO NOT charge the battery for more than 24 continuous hours. The unit may be left plugged in, but the ...
Cardiac lesions associated with cardiopulmonary
... Nolan JP, Neumar RW, Adrie C, et al. Post-cardiac arrest syndrome: Epidemiology, pathophysiology, treatment, and prognostication: A Scientific Statement from the International Liaison Committee on Resuscitation; the American Heart Association Emergency Cardiovascular Care Committee; the Council on C ...
... Nolan JP, Neumar RW, Adrie C, et al. Post-cardiac arrest syndrome: Epidemiology, pathophysiology, treatment, and prognostication: A Scientific Statement from the International Liaison Committee on Resuscitation; the American Heart Association Emergency Cardiovascular Care Committee; the Council on C ...
Atrial fibrillation basics - Christiana Care Health System
... in normal rhythm, and linked to the severity of underlying heart disease. ...
... in normal rhythm, and linked to the severity of underlying heart disease. ...
Cardiorespiratory Resuscitation
... 1. and 2. Defibrillation is the first action, as it is defibrillation that will restore the heart to a sinus rhythm. It is likely, however, that in an unmonitored patient, BLS will be in progress while the rhythm is being determined. Shocks are given as single shocks at 4J/kg. CPR for 2 minutes is c ...
... 1. and 2. Defibrillation is the first action, as it is defibrillation that will restore the heart to a sinus rhythm. It is likely, however, that in an unmonitored patient, BLS will be in progress while the rhythm is being determined. Shocks are given as single shocks at 4J/kg. CPR for 2 minutes is c ...
Relation of tissue Doppler derived myocardial velocities to
... Kesavan Shan, MD,* Roger J. Bick, PHD,‡ Brian J. Poindexter, MSC,‡ Sarah Shimoni, MD,* George V. Letsou, MD,† Michael J. Reardon, MD,† Jimmy F. Howell, MD,† ...
... Kesavan Shan, MD,* Roger J. Bick, PHD,‡ Brian J. Poindexter, MSC,‡ Sarah Shimoni, MD,* George V. Letsou, MD,† Michael J. Reardon, MD,† Jimmy F. Howell, MD,† ...
Ventricular fibrillation
Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart, making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients. While there is some activity, the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries. Such an arrhythmia is only confirmed by electrocardiography. Ventricular fibrillation is a medical emergency that requires prompt Advanced Life Support interventions. If this arrhythmia continues for more than a few seconds, it will likely degenerate further into asystole (""flatline""). This condition results in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) will result in a matter of minutes. If the patient is not revived after a sufficient period (within roughly 5 minutes at room temperature), the patient could sustain irreversible brain damage and possibly become brain-dead, due to the effects of cerebral hypoxia. On the other hand, death often occurs if sinus rhythm is not restored within 90 seconds of the onset of VF, especially if it has degenerated further into asystole.