Anesthetic Management of Electrophysiological Procedures for
... number of recent publications that reviewed this topic.1–4 The current role of the anesthesiologist is no longer limited to providing comfort to the cardiac patient. Although this is still the foremost goal of the anesthesiologist’s care, it is vital to understand that the particular choice of the a ...
... number of recent publications that reviewed this topic.1–4 The current role of the anesthesiologist is no longer limited to providing comfort to the cardiac patient. Although this is still the foremost goal of the anesthesiologist’s care, it is vital to understand that the particular choice of the a ...
Syncope and The Older Patient
... Some recommend if no bruits, recent MI, cva or history of vtach ?monitor Positive response: 3 sec pause In literature, but most cardiologists would not recommend ...
... Some recommend if no bruits, recent MI, cva or history of vtach ?monitor Positive response: 3 sec pause In literature, but most cardiologists would not recommend ...
3/09 LV Systolic Function
... radionuclide ventriculography (specificity=94%). The overall accuracy of echocardiography in identifying patients with a low ejection fraction was 94%. • But test-retest correlation much lower for 2D echo than other modalities such as 3D echo (22) R Senior et al. European Heart Journal ...
... radionuclide ventriculography (specificity=94%). The overall accuracy of echocardiography in identifying patients with a low ejection fraction was 94%. • But test-retest correlation much lower for 2D echo than other modalities such as 3D echo (22) R Senior et al. European Heart Journal ...
Epinephrine and organ blood flow: effects of
... in such a way as to enhance its own delivery to and net uptake by the heart. Hyperthyroidism would be expected to potentiate the effect of epinephrine on any organ whose arterial bed the catecholamine dilates, and decrease the response of organs whose vessels it constricts, provided that the ability ...
... in such a way as to enhance its own delivery to and net uptake by the heart. Hyperthyroidism would be expected to potentiate the effect of epinephrine on any organ whose arterial bed the catecholamine dilates, and decrease the response of organs whose vessels it constricts, provided that the ability ...
full text pdf
... first study to compare the relatively new method of TAT with MRI. Cells in the MI region may undergo pathophysiological changes due to hypoxic injury. Damage to the membrane structure may cause the cell contents and organelles to be released into the extracellular space, which can induce a rising of ...
... first study to compare the relatively new method of TAT with MRI. Cells in the MI region may undergo pathophysiological changes due to hypoxic injury. Damage to the membrane structure may cause the cell contents and organelles to be released into the extracellular space, which can induce a rising of ...
AORTIC STENOSIS - Ravenwood-PA
... Usually develops later and reflects an imbalance between the augmented myocardial oxygen requirements and reduced oxygen availability ...
... Usually develops later and reflects an imbalance between the augmented myocardial oxygen requirements and reduced oxygen availability ...
chapter 1. overview - IMIB-CHD
... in the lower panels of Figures 1-1 and 1-2. In the majority of the hearts of this kind, both features coexist. The hearts described as ‘criss-cross hearts’ almost invariably show the inlet of one ventricle located superior to the inlet of the other ventricle. The right ventricular inlet is almost al ...
... in the lower panels of Figures 1-1 and 1-2. In the majority of the hearts of this kind, both features coexist. The hearts described as ‘criss-cross hearts’ almost invariably show the inlet of one ventricle located superior to the inlet of the other ventricle. The right ventricular inlet is almost al ...
Resting Heart Rate Is a Risk Factor for Mortality in Chronic
... increased heart rate, the effects on both mortality and non-fatal pulmonary complications are unclear. We assessed whether heart rate is associated with all-cause mortality, and non-fatal pulmonary endpoints. Methods: A prospective cohort study of 405 elderly patients with COPD was performed. All pa ...
... increased heart rate, the effects on both mortality and non-fatal pulmonary complications are unclear. We assessed whether heart rate is associated with all-cause mortality, and non-fatal pulmonary endpoints. Methods: A prospective cohort study of 405 elderly patients with COPD was performed. All pa ...
New devices in heart failure: an European Heart Rhythm
... the activity of sarco-endoplasmic reticulum calcium ATPase type 2a (SERCA2a) which in turn modulates calcium handling by the sarcoplasmic reticulum.16 Shortly thereafter, changes in gene expression can be demonstrated. For example, the expression of SERCA2a was decreased in untreated HF animals in b ...
... the activity of sarco-endoplasmic reticulum calcium ATPase type 2a (SERCA2a) which in turn modulates calcium handling by the sarcoplasmic reticulum.16 Shortly thereafter, changes in gene expression can be demonstrated. For example, the expression of SERCA2a was decreased in untreated HF animals in b ...
In Situ Morphology of the Heart and Great Vessels in ~ etal
... masses obtained with these three formulas, the weight of the ventricles was divided by the ventricular mass calculated with the formulas to obtain specific gravity of the frozen ventricles. These indirectly measured specific gravities were compared with the following directly measured specific gravi ...
... masses obtained with these three formulas, the weight of the ventricles was divided by the ventricular mass calculated with the formulas to obtain specific gravity of the frozen ventricles. These indirectly measured specific gravities were compared with the following directly measured specific gravi ...
Branches of Right Coronary Artery
... It descends in the right atrioventricular groove. Near inferior border continuous posteriorly along the atrioventricular groove. Anastomose with left coronary artery in the posterior interventricular groove. ...
... It descends in the right atrioventricular groove. Near inferior border continuous posteriorly along the atrioventricular groove. Anastomose with left coronary artery in the posterior interventricular groove. ...
Academic Dual Chamber Pacemaker
... down to 37uV. This was achieved by providing a variable gain and reference level for the circuit, under the control of a microprocessor. The pacing circuit is able to provide nearly continuous selectable voltage amplitudes ranging from 1.2 to 7 volts, and the pulse width is only limited by the maxim ...
... down to 37uV. This was achieved by providing a variable gain and reference level for the circuit, under the control of a microprocessor. The pacing circuit is able to provide nearly continuous selectable voltage amplitudes ranging from 1.2 to 7 volts, and the pulse width is only limited by the maxim ...
Primary Prevention of Sudden Cardiac Death in Patients with Heart
... ventricular tachycardia) and bradycardia [14,19]. Progression from ventricular tachycardia to ventricular fibrillation is the most common terminal event, but it is often uncertain if this was the primary trigger for SCD or if fibrillation occurred secondary to myocardial ischemia, Myocardial Infarct ...
... ventricular tachycardia) and bradycardia [14,19]. Progression from ventricular tachycardia to ventricular fibrillation is the most common terminal event, but it is often uncertain if this was the primary trigger for SCD or if fibrillation occurred secondary to myocardial ischemia, Myocardial Infarct ...
The Anatomy and Physiology of the Sinoatrial Node—A
... Figure 3. The position of the leading pacemaker site is highly variable. (A) Pacemaker shift in the rabbit SAN. The position of the leading pacemaker site under basal conditions is shown by the black star and under the indicated conditions by the white stars. From Boyett et al.22 (B, C) The position ...
... Figure 3. The position of the leading pacemaker site is highly variable. (A) Pacemaker shift in the rabbit SAN. The position of the leading pacemaker site under basal conditions is shown by the black star and under the indicated conditions by the white stars. From Boyett et al.22 (B, C) The position ...
Cardiovascular Imaging for Nuclear Cardiologists: First Step of
... Cardiac magnetic resonance (CMR) is a rapidly evolving technology that is increasingly being used for the noninvasive imaging in the diagnosis of cardiac diseases. CMR allows for the accurate and reproducible assessments of anatomy, function and tissue characterization of the heart. It is important ...
... Cardiac magnetic resonance (CMR) is a rapidly evolving technology that is increasingly being used for the noninvasive imaging in the diagnosis of cardiac diseases. CMR allows for the accurate and reproducible assessments of anatomy, function and tissue characterization of the heart. It is important ...
Full version (PDF file)
... The baseline characteristics of these study patients are shown in Table 1. The mean overall age was 48.9 years (73 % were male) and mean overall body mass index was 24.2 kg/m2. All patients received maximum standard heart failure therapy. In 36 % of the patients we used small doses of dopamine or do ...
... The baseline characteristics of these study patients are shown in Table 1. The mean overall age was 48.9 years (73 % were male) and mean overall body mass index was 24.2 kg/m2. All patients received maximum standard heart failure therapy. In 36 % of the patients we used small doses of dopamine or do ...
Prognostic Impact of New-Onset Atrial Fibrillation in - J
... natriuretic peptide (152 vs. 74.5 pg/ml), similar left ventricular ejection fraction (56.8 vs. 56.5%), and a similar prescription rate of β-blockers (48.1 vs. 50.6%) and renin-angiotensin system (RAS) inhibitors (72.9 vs. 71.6%). Among the patients without AF at enrollment, 106 (3.6%) developed new ...
... natriuretic peptide (152 vs. 74.5 pg/ml), similar left ventricular ejection fraction (56.8 vs. 56.5%), and a similar prescription rate of β-blockers (48.1 vs. 50.6%) and renin-angiotensin system (RAS) inhibitors (72.9 vs. 71.6%). Among the patients without AF at enrollment, 106 (3.6%) developed new ...
With Third-Degree Atrioventricular Block Rate and
... atrioventricular block who were admitted to our hospital between April 1998 and March 2001 were screened for enrollment in this study. Atrioventricular block was labeled as idiopathic when there were no diseases that could precipitate atrioventricular block, such as inflammatory or infiltrative dise ...
... atrioventricular block who were admitted to our hospital between April 1998 and March 2001 were screened for enrollment in this study. Atrioventricular block was labeled as idiopathic when there were no diseases that could precipitate atrioventricular block, such as inflammatory or infiltrative dise ...
Sudden cardiac death: role of heart rate
... variability in predicting arrhythmic deaths [9,17,19,22– 29]. Information obtained by this type of studies may have practical importance, but the study designs are also confounded by some biases, which prevent generalisation of the results. A major limitation is the problem of defining the occurrenc ...
... variability in predicting arrhythmic deaths [9,17,19,22– 29]. Information obtained by this type of studies may have practical importance, but the study designs are also confounded by some biases, which prevent generalisation of the results. A major limitation is the problem of defining the occurrenc ...
Print - Circulation Research
... pan-specific RGS protein inhibition in these models precluded identification of the specific RGS proteins involved. Although a large number of mammalian RGS proteins are expressed in the heart,11–13 their specific roles as regulators of parasympathetic pathway effectors are not well understood. Beca ...
... pan-specific RGS protein inhibition in these models precluded identification of the specific RGS proteins involved. Although a large number of mammalian RGS proteins are expressed in the heart,11–13 their specific roles as regulators of parasympathetic pathway effectors are not well understood. Beca ...
Sympathetic Nervous System Modulation of
... pregulation of the sympathetic nervous system (SNS) is involved in numerous cardiovascular disease processes and is responsible for alterations in normal myocardial structure and function, including the induction of arrhythmias, alterations in contractile properties, and cardiac remodeling.1 In an e ...
... pregulation of the sympathetic nervous system (SNS) is involved in numerous cardiovascular disease processes and is responsible for alterations in normal myocardial structure and function, including the induction of arrhythmias, alterations in contractile properties, and cardiac remodeling.1 In an e ...
Metabolic remodelling of the failing heart: beneficial or detrimental?
... The failing heart is characterized by alterations in energy metabolism, including mitochondrial dysfunction and a reduction in fatty acid (FA) oxidation rate, which is partially compensated by an increase in glucose utilization. Together, these changes lead to an impaired capacity to convert chemica ...
... The failing heart is characterized by alterations in energy metabolism, including mitochondrial dysfunction and a reduction in fatty acid (FA) oxidation rate, which is partially compensated by an increase in glucose utilization. Together, these changes lead to an impaired capacity to convert chemica ...
Magnesium in the acute management of atrial fibrillation: noise or
... effect profile and adverse event rates for magnesium are comparable to placebo and control medications used in these trials. The optimal dose and duration of therapy with magnesium in this setting is not clear from the systematic review and this needs to be clarified. Ho et al. [9] recently publishe ...
... effect profile and adverse event rates for magnesium are comparable to placebo and control medications used in these trials. The optimal dose and duration of therapy with magnesium in this setting is not clear from the systematic review and this needs to be clarified. Ho et al. [9] recently publishe ...
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.