Rheology of discrete subaortic stenosis - Heart
... become apparent in recent years that this is an acquired lesion that is rarely seen in the newborn or neonatal period.1–4 Recent theories about the pathophysiological mechanism of its formation suggest an abnormal underlying endothelial substrate that is stimulated to undergo proliferation by sheer ...
... become apparent in recent years that this is an acquired lesion that is rarely seen in the newborn or neonatal period.1–4 Recent theories about the pathophysiological mechanism of its formation suggest an abnormal underlying endothelial substrate that is stimulated to undergo proliferation by sheer ...
Clinical Cardiology: New Frontiers
... guidelines on this topic8 reflect the current scientific knowledge and consensus and conclude that variations in dose and intensity will yield differing beneficial effects on fitness and cardiovascular risk factors. These may translate to different effects on cardiovascular morbidity and mortality r ...
... guidelines on this topic8 reflect the current scientific knowledge and consensus and conclude that variations in dose and intensity will yield differing beneficial effects on fitness and cardiovascular risk factors. These may translate to different effects on cardiovascular morbidity and mortality r ...
Congenital Diaphragmatic Hernia and Congenital Heart
... approximately 23%, this data is ten years old and when CDH is suspected, fetal echocardiography should be carried out by an experienced paediatric cardiologist. (Allan) In the past it was suggested that left heart hypoplasia as detected on fatal echocardiogram may predict poor outcome.(Crawford, Dra ...
... approximately 23%, this data is ten years old and when CDH is suspected, fetal echocardiography should be carried out by an experienced paediatric cardiologist. (Allan) In the past it was suggested that left heart hypoplasia as detected on fatal echocardiogram may predict poor outcome.(Crawford, Dra ...
Antitachycardia Pacing for Ventricular Tachycardia
... morphology during Type-2 breaks reflect modification of the reentrant path by the ATP wavefront within a complex, three-dimensional substrate. Approximately 9% of all Type-2 episodes may be spontaneously terminating nonsustained VT since ATP did not affect these episodes in any way. ...
... morphology during Type-2 breaks reflect modification of the reentrant path by the ATP wavefront within a complex, three-dimensional substrate. Approximately 9% of all Type-2 episodes may be spontaneously terminating nonsustained VT since ATP did not affect these episodes in any way. ...
Level of Evidence
... • State major criteria you used to limit your search; state inclusion or exclusion criteria (e.g., only human studies with control group? no animal studies? N subjects > minimal number? type of methodology? peer-reviewed manuscripts only? no abstract-only studies?) ...
... • State major criteria you used to limit your search; state inclusion or exclusion criteria (e.g., only human studies with control group? no animal studies? N subjects > minimal number? type of methodology? peer-reviewed manuscripts only? no abstract-only studies?) ...
Acute management of sudden cardiac death in adults based upon
... minimized, because every time compressions are stopped, it takes a significant amount of time to re-establish adequate aortic and coronary perfusion pressures.29 For example, pulse checks should not last more than 10 s. In observational studies, the average time without ...
... minimized, because every time compressions are stopped, it takes a significant amount of time to re-establish adequate aortic and coronary perfusion pressures.29 For example, pulse checks should not last more than 10 s. In observational studies, the average time without ...
The jugular venous pressure revisited
... et al6 found a mean of 8 cm at 30° elevation, 9.7 cm at 45°, and 9.8 cm at 60°. The difference also varied between patients, being larger in association with smoking, older age, large body mass index, and large anterior-posterior diameter. These factors should be considered when trying to evaluate t ...
... et al6 found a mean of 8 cm at 30° elevation, 9.7 cm at 45°, and 9.8 cm at 60°. The difference also varied between patients, being larger in association with smoking, older age, large body mass index, and large anterior-posterior diameter. These factors should be considered when trying to evaluate t ...
approach to cyanotic congenital
... 1. Mainstay in final confirmation of diagnosis 2. Exact anatomical diagnosis 3. Physiological classification - PS / No PS 4. Hemodynamic information - PA pressure etc. 5. Assessment of Ventricular function 6. Decides the type of repair needed Pediatric echocardiography must be performed by skilled ...
... 1. Mainstay in final confirmation of diagnosis 2. Exact anatomical diagnosis 3. Physiological classification - PS / No PS 4. Hemodynamic information - PA pressure etc. 5. Assessment of Ventricular function 6. Decides the type of repair needed Pediatric echocardiography must be performed by skilled ...
Pacing Therapies for Heart Failure (PDF Available)
... therefore, creates a large stimulus artifact on the surface ECG. It may stimulate electrically excitable tissue, other than the heart, which lies in the path of the current. An example of such a tissue would be the pectoralis muscle over which the pacemaker generator is placed. The bipolar pacing st ...
... therefore, creates a large stimulus artifact on the surface ECG. It may stimulate electrically excitable tissue, other than the heart, which lies in the path of the current. An example of such a tissue would be the pectoralis muscle over which the pacemaker generator is placed. The bipolar pacing st ...
Cardiac Resynchronization Therapy
... short of breath, tired, light-headed, or you may faint. Medications are often used to treat heart failure and its symptoms. However, some people may also need a CRT-P to help the heart beat more efficiently again. ...
... short of breath, tired, light-headed, or you may faint. Medications are often used to treat heart failure and its symptoms. However, some people may also need a CRT-P to help the heart beat more efficiently again. ...
... used to describe re-entrant arrhythmias involving the atrioventricular (AV) junction (atrioventricular nodal reciprocating tachycardia [AVNRT]), atrium [atrial tachycardia (AT)], or AV-reciprocating rhythms [atrioventricular reciprocating tachycardia (AVRT)]). For our purposes, the term “supraventri ...
Willem J. Kolff audio-visual collection, 1949-1995
... Dixon: 1965 Polyneuritis (one year after transplantation) Silent, color 16mm film This film has two segments. The first shows a patient (Dixon?) in a wheelchair demonstrating arm movement and performing simple manual tasks, such as drinking and eating, with a closeup of his hands. The second segment ...
... Dixon: 1965 Polyneuritis (one year after transplantation) Silent, color 16mm film This film has two segments. The first shows a patient (Dixon?) in a wheelchair demonstrating arm movement and performing simple manual tasks, such as drinking and eating, with a closeup of his hands. The second segment ...
ACC/AHA/ESC Guidelines for the Management of Patients
... used to describe re-entrant arrhythmias involving the atrioventricular (AV) junction (atrioventricular nodal reciprocating tachycardia [AVNRT]), atrium [atrial tachycardia (AT)], or AV-reciprocating rhythms [atrioventricular reciprocating tachycardia (AVRT)]). For our purposes, the term “supraventri ...
... used to describe re-entrant arrhythmias involving the atrioventricular (AV) junction (atrioventricular nodal reciprocating tachycardia [AVNRT]), atrium [atrial tachycardia (AT)], or AV-reciprocating rhythms [atrioventricular reciprocating tachycardia (AVRT)]). For our purposes, the term “supraventri ...
Cold acclimation alters the connective tissue content of the zebrafish
... the spongy myocardium will therefore increase the amount of blood pumped per beat (Klaiman et al., 2011). Previous work suggests that such changes are responsible for cold-acclimated (5°C) trout having a greater, or equal, stroke volume compared with warm-acclimated (15°C) trout (Graham and Farrell, ...
... the spongy myocardium will therefore increase the amount of blood pumped per beat (Klaiman et al., 2011). Previous work suggests that such changes are responsible for cold-acclimated (5°C) trout having a greater, or equal, stroke volume compared with warm-acclimated (15°C) trout (Graham and Farrell, ...
Increased plasma arginine vasopressin levels in patients
... between vasopressin and right atrial pressure. The explanation for the discrepancy may reside in the fact that nearly all of our patients had high right-sided pressures, whereas Yamane studied a large group with normal right-sided pressures. In this case, because of a wider range of values for both ...
... between vasopressin and right atrial pressure. The explanation for the discrepancy may reside in the fact that nearly all of our patients had high right-sided pressures, whereas Yamane studied a large group with normal right-sided pressures. In this case, because of a wider range of values for both ...
Redalyc.Right coronary artery anatomy: anatomical and
... Right coronary artery arises from the anterior sinus of Valsalva and courses through the right atrioventricular groove between the right atrium and right ventricle to the inferior part of the septum. The right coronary artery (RCA) presents a wide morphological expression especially for its length, ...
... Right coronary artery arises from the anterior sinus of Valsalva and courses through the right atrioventricular groove between the right atrium and right ventricle to the inferior part of the septum. The right coronary artery (RCA) presents a wide morphological expression especially for its length, ...
Left Atrial Myxoma Associated with Mitral Valve Pathology
... myxoma with annular dilatation in the presence of left atrial and left ventricular enlargement.1,9 But the rare feature in our patient was the presence of mitral annular dilatation without left atrial and left ventricular enlargement. This is an unusual finding and has rarely been reported previousl ...
... myxoma with annular dilatation in the presence of left atrial and left ventricular enlargement.1,9 But the rare feature in our patient was the presence of mitral annular dilatation without left atrial and left ventricular enlargement. This is an unusual finding and has rarely been reported previousl ...
Disruption of the circadian clock within the cardiomyocyte influences
... was used for isolation of both mitochondrial populations. Mice were anesthetized (isoflurane), and the left ventricle was excised and subsequently placed in KME (100 mM KCl, 50 mM MOPS, internal salt, and 0.5 mM EGTA). The IFM were harvested following treatment of skinned fibers with 5 mg/g wet wt t ...
... was used for isolation of both mitochondrial populations. Mice were anesthetized (isoflurane), and the left ventricle was excised and subsequently placed in KME (100 mM KCl, 50 mM MOPS, internal salt, and 0.5 mM EGTA). The IFM were harvested following treatment of skinned fibers with 5 mg/g wet wt t ...
The Prognostic Value of Left Atrial Peak Reservoir Strain in Acute
... However, no studies have assessed the interrelation of PALS and left ventricular longitudinal strain (global longitudinal strain) in large-scale populations in regard to prognosis. Methods and Results—We prospectively included 843 patients (mean age 62.1±11.8; 74% male) with acute myocardial infarct ...
... However, no studies have assessed the interrelation of PALS and left ventricular longitudinal strain (global longitudinal strain) in large-scale populations in regard to prognosis. Methods and Results—We prospectively included 843 patients (mean age 62.1±11.8; 74% male) with acute myocardial infarct ...
The role of adrenergic stimulation in maintaining maximum cardiac
... Kirchseeon, Germany). Cardiac outflow was continuously measured through the output line with an in-line ...
... Kirchseeon, Germany). Cardiac outflow was continuously measured through the output line with an in-line ...
Cardiac Rhythm Management Devices (Part II)
... Failure to Pace. With a single-chamber pacemaker and failure to pace, there will be no pacing artifacts in the surface electrocardiogram. The intrinsic rate will be below the programmed lower rate limit, which is obtained from the patient’s records or through device interrogation.3,4 Misdiagnosis of ...
... Failure to Pace. With a single-chamber pacemaker and failure to pace, there will be no pacing artifacts in the surface electrocardiogram. The intrinsic rate will be below the programmed lower rate limit, which is obtained from the patient’s records or through device interrogation.3,4 Misdiagnosis of ...
- Wiley Online Library
... different cats served as untreated controls to evaluate the effects of acclimation to the hospital environment on HR. Results: Acclimation to the hospital had no effect on HR in control cats. After timolol administration, a significant median HR reduction of 25 bpm was observed (P < .0001). Timolol had ...
... different cats served as untreated controls to evaluate the effects of acclimation to the hospital environment on HR. Results: Acclimation to the hospital had no effect on HR in control cats. After timolol administration, a significant median HR reduction of 25 bpm was observed (P < .0001). Timolol had ...
Timolol Maleate Ophthalmic Solution on Heart Rate and Selected
... different cats served as untreated controls to evaluate the effects of acclimation to the hospital environment on HR. Results: Acclimation to the hospital had no effect on HR in control cats. After timolol administration, a significant median HR reduction of 25 bpm was observed (P < .0001). Timolol had ...
... different cats served as untreated controls to evaluate the effects of acclimation to the hospital environment on HR. Results: Acclimation to the hospital had no effect on HR in control cats. After timolol administration, a significant median HR reduction of 25 bpm was observed (P < .0001). Timolol had ...
Impact of obstructive sleep apnoea on diastolic function
... To assess the association between two continuous variables, bivariate correlation analysis was used. To analyse which variables are associated with diastolic dysfunction, univariate analyses were performed separately for each variable using binary logistic regression analysis. The variables that sho ...
... To assess the association between two continuous variables, bivariate correlation analysis was used. To analyse which variables are associated with diastolic dysfunction, univariate analyses were performed separately for each variable using binary logistic regression analysis. The variables that sho ...
Arrhythmogenic Right Ventricular Dysplasia/Cardiomyopathy
... still be at risk for cardiovascular events including arrhythmias and, therefore, warrant continuing care by a cardiologist. Of note, additional considerations regarding the noninvasive and invasive tests of cardiac structure and rhythm described above are outlined below. ...
... still be at risk for cardiovascular events including arrhythmias and, therefore, warrant continuing care by a cardiologist. Of note, additional considerations regarding the noninvasive and invasive tests of cardiac structure and rhythm described above are outlined below. ...
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.