Angiotensin-Converting Enzyme and Angiotensinogen Gene
... eart rate variability (HRV), defined as spontaneous fluctuations in sinus rate due to internal and H external body processes, is an indicator of risk for ...
... eart rate variability (HRV), defined as spontaneous fluctuations in sinus rate due to internal and H external body processes, is an indicator of risk for ...
Is Cardiac Magnetic Resonance Imaging Underutilized in the
... areamin)/PA areamin] (Figure 2). As PH progresses, the PA typically dilates and the degree of pulsatility declines, reflecting loss of elasticity and worsening stiffness.6,7 This technique may provide a means to detect pulmonary vascular remodeling at an earlier stage of development, and may also ul ...
... areamin)/PA areamin] (Figure 2). As PH progresses, the PA typically dilates and the degree of pulsatility declines, reflecting loss of elasticity and worsening stiffness.6,7 This technique may provide a means to detect pulmonary vascular remodeling at an earlier stage of development, and may also ul ...
Coexistence of Sick Sinus Rhythm and Atrial Flutter
... ng/ml on the day of the study. Two quadripolar #6F USCI catheters with 10-mm interelectrode distance were introduced percutaneously into the femoral vein and positioned in the right atrium. Three standard ECG leads and intra-atrial electrograms, filtered at frequency settings of 40-500 Hz and time l ...
... ng/ml on the day of the study. Two quadripolar #6F USCI catheters with 10-mm interelectrode distance were introduced percutaneously into the femoral vein and positioned in the right atrium. Three standard ECG leads and intra-atrial electrograms, filtered at frequency settings of 40-500 Hz and time l ...
Detection of Hypokinesis by Quantitative
... antero-lateral wall. In patients 10, 11 and 13 a similar pattern of change was observed but in addition, in these patients as well as in patient 12, areas previously thought to be hypokinetic appeared akinetic, using the quantitative method. An example of this phenomenon is shown in figure 4. In pat ...
... antero-lateral wall. In patients 10, 11 and 13 a similar pattern of change was observed but in addition, in these patients as well as in patient 12, areas previously thought to be hypokinetic appeared akinetic, using the quantitative method. An example of this phenomenon is shown in figure 4. In pat ...
Localization of abnormal conduction pathways for tachyarrhythmia
... Figure 2 shows results of activation detection obtained for the MR stress study described in Section 3.1. The times of activation of different regions of the myocardium are shown as different colours over the end-diastolic myocardial surface (activation isochrones maps). The first three images in th ...
... Figure 2 shows results of activation detection obtained for the MR stress study described in Section 3.1. The times of activation of different regions of the myocardium are shown as different colours over the end-diastolic myocardial surface (activation isochrones maps). The first three images in th ...
IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS)
... From recent scientific reports, it has been discovered that there is an increased use of geological minerals in human and animal feed. Moreover, Nigeria government revitalized concern in the exploration of solid mineral could perhaps explain the reason for the use of naturally occurring inorganic su ...
... From recent scientific reports, it has been discovered that there is an increased use of geological minerals in human and animal feed. Moreover, Nigeria government revitalized concern in the exploration of solid mineral could perhaps explain the reason for the use of naturally occurring inorganic su ...
Cardiovascular disease in CKD
... Aluminium level <2.2 mmol/l (60mg/l) (ferritin >100) – RA standards 2002 Calcium dosage Less than 1500mg elemental calcium ...
... Aluminium level <2.2 mmol/l (60mg/l) (ferritin >100) – RA standards 2002 Calcium dosage Less than 1500mg elemental calcium ...
Full Text - Ibrahim Medical College
... LVDD but got no significant statistical association (p=0.448). However, as plasma BNP level is classified into three groups (i.e. <100 pg/ml as normal, 100-400 pg/ml as doubtful, and >400 pg/ml as confirmatory) for diagnostic purpose of cardiac illness, we also analyzed whether there is any associat ...
... LVDD but got no significant statistical association (p=0.448). However, as plasma BNP level is classified into three groups (i.e. <100 pg/ml as normal, 100-400 pg/ml as doubtful, and >400 pg/ml as confirmatory) for diagnostic purpose of cardiac illness, we also analyzed whether there is any associat ...
File
... How are micro and macro structures related to cardiac function? How does this relation change in the presence of disease? And how can MRI help to uncover these changes? The central theme of this Workshop program seeks to provide attendees with an in-depth look at structure and physiology of the hear ...
... How are micro and macro structures related to cardiac function? How does this relation change in the presence of disease? And how can MRI help to uncover these changes? The central theme of this Workshop program seeks to provide attendees with an in-depth look at structure and physiology of the hear ...
Heart Failure With Normal Left Ventricular Ejection Fraction
... It is now widely acknowledged that the clinical features of heart failure (HF) can occur in patients with normal left ventricular ejection fraction (LVEF) (1–3), currently referred to as heart failure with normal ejection fraction (HFNEF). In some cases the presentation can be as dramatic as that in ...
... It is now widely acknowledged that the clinical features of heart failure (HF) can occur in patients with normal left ventricular ejection fraction (LVEF) (1–3), currently referred to as heart failure with normal ejection fraction (HFNEF). In some cases the presentation can be as dramatic as that in ...
An Automatic Beat Detection Algorithm for Pressure Signals
... UTOMATIC beat detection algorithms are essential for many types of biomedical signal analysis and patient monitoring. This type of analysis is most often applied to the electrocardiogram (ECG) signal in which one or more of its components is detected automatically. Although many detection algorithms ...
... UTOMATIC beat detection algorithms are essential for many types of biomedical signal analysis and patient monitoring. This type of analysis is most often applied to the electrocardiogram (ECG) signal in which one or more of its components is detected automatically. Although many detection algorithms ...
the velocity of blood flow, venous and arterial
... shows that while the circulation times were in general prolonged, this prolongation was not conspicuous. Of the eighteen patients studied, only four showed arm to arm velocities of blood flow greater than thirty-five seconds. In seven patients, however, the circulation times were between twenty-five ...
... shows that while the circulation times were in general prolonged, this prolongation was not conspicuous. Of the eighteen patients studied, only four showed arm to arm velocities of blood flow greater than thirty-five seconds. In seven patients, however, the circulation times were between twenty-five ...
Echocardiographic Evaluation of Left Ventricular Systolic and
... provide more accurate measurements of LV mass, as it does not assume the LV to be a truncated ellipsoid as 2D echocardiography. The benefit of this is largely seen in patients with regional wall abnormalities or LV aneurysms, where more accurate LV volumes can be obtained by 3D vs 2D echocardiograph ...
... provide more accurate measurements of LV mass, as it does not assume the LV to be a truncated ellipsoid as 2D echocardiography. The benefit of this is largely seen in patients with regional wall abnormalities or LV aneurysms, where more accurate LV volumes can be obtained by 3D vs 2D echocardiograph ...
Effect of Low-Energy Diets Differing in Fiber, Red Meat, and Coffee
... 1 or secondary diabetes types; presence of acute or chronic diseases, including cancer; and use of a medication affecting the immune system or insulin sensitivity, other than metformin. The screening included medical history, laboratory tests, anthropometry, and 12-lead ECG. Study Design ...
... 1 or secondary diabetes types; presence of acute or chronic diseases, including cancer; and use of a medication affecting the immune system or insulin sensitivity, other than metformin. The screening included medical history, laboratory tests, anthropometry, and 12-lead ECG. Study Design ...
Cardiorespiratory Resuscitation
... change in rhythm is seen that is compatible with a perfusing rhythm. If there is a change in rhythm, then resuscitation should follow the appropriate algorithm. 7. The four Hs and 4 Ts are some of the reversible causes of arrest, and should all be considered whilst resuscitation continues. These are ...
... change in rhythm is seen that is compatible with a perfusing rhythm. If there is a change in rhythm, then resuscitation should follow the appropriate algorithm. 7. The four Hs and 4 Ts are some of the reversible causes of arrest, and should all be considered whilst resuscitation continues. These are ...
Assessment of Longitudinal Myocardial Stiffness Is Not - J
... support is different from that at the level of the M-line in the sarcomeres and this difference in the resistance of the transverse axis could modify intracellular signals induced by proteins structurally extra-sarcomeric perpendicular to the long axis in the muscular fiber.6 The mechanical properti ...
... support is different from that at the level of the M-line in the sarcomeres and this difference in the resistance of the transverse axis could modify intracellular signals induced by proteins structurally extra-sarcomeric perpendicular to the long axis in the muscular fiber.6 The mechanical properti ...
Contemporary Reviews in Cardiovascular Medicine Athlete`s Heart
... been debated since the time Darling and Henschen made their initial observations. Although both investigators speculated that their findings represented beneficial adaptations to exercise, this view was not universally accepted. It was postulated as early as 1902 that cardiac enlargement in athletes ...
... been debated since the time Darling and Henschen made their initial observations. Although both investigators speculated that their findings represented beneficial adaptations to exercise, this view was not universally accepted. It was postulated as early as 1902 that cardiac enlargement in athletes ...
Full text PDF
... rest or on exercise, fatigue, tiredness and ankle swelling. The clinical signs typical of heart failure are defined by the ESC as tachycardia, tachypnoea, pulmonary rales, pleural effusion, raised jugular venous pressure, peripheral oedema and hepatomegaly. Objective evidence of a structural or func ...
... rest or on exercise, fatigue, tiredness and ankle swelling. The clinical signs typical of heart failure are defined by the ESC as tachycardia, tachypnoea, pulmonary rales, pleural effusion, raised jugular venous pressure, peripheral oedema and hepatomegaly. Objective evidence of a structural or func ...
Guidelines for the Prevention of Postoperative Atrial Fibrillation
... need for reintubation, double the rate of perioperative myocardial infarction, cerebrovascular accidents, hemodynamic compromise, pulmonary edema, ventricular arrhythmias, and/or need for a permanent pacemaker. Although these complications are well recognized, the etiology is not as well defined. It ...
... need for reintubation, double the rate of perioperative myocardial infarction, cerebrovascular accidents, hemodynamic compromise, pulmonary edema, ventricular arrhythmias, and/or need for a permanent pacemaker. Although these complications are well recognized, the etiology is not as well defined. It ...
Print - Circulation
... Acknowledging the lack of proof that plaque-fissuring alone can precipitate ventricular fibrillation, Davies et al10 noted that after excluding abnormalities limited to these lesions, acute coronary pathology was absent in one fourth of all "ischemic" sudden deaths studied. These findings challenge ...
... Acknowledging the lack of proof that plaque-fissuring alone can precipitate ventricular fibrillation, Davies et al10 noted that after excluding abnormalities limited to these lesions, acute coronary pathology was absent in one fourth of all "ischemic" sudden deaths studied. These findings challenge ...
Cellular Electrophysiology
... contraction. The impulse conducts through the AV node for a considerable time (between 120 and 200 ms; invisible in the ECG, leading to the PR interval), during which period the ventricles fill passively and assisted by the atrial contraction. Once the impulse has passed the AV node, the His-Purkinj ...
... contraction. The impulse conducts through the AV node for a considerable time (between 120 and 200 ms; invisible in the ECG, leading to the PR interval), during which period the ventricles fill passively and assisted by the atrial contraction. Once the impulse has passed the AV node, the His-Purkinj ...
Myocardial Perfusion Planar Imaging
... and function. Planar imaging is an acceptable method for myocardial perfusion imaging. The anatomy of the heart is sufficiently simple that the imaging specialist can comprehend the location and extent of defects from multiple projections without need of computer reconstruction. Although SPECT imagi ...
... and function. Planar imaging is an acceptable method for myocardial perfusion imaging. The anatomy of the heart is sufficiently simple that the imaging specialist can comprehend the location and extent of defects from multiple projections without need of computer reconstruction. Although SPECT imagi ...
Therapeutic Hypothermia After Cardiac Arrest
... fluctuations should be minimized to 0.5 degree C. Core body temperature should be monitored continuously during TH Pulmonary artery catheters and central venous catheters are considered the gold standard for core temperature monitoring In practice, many patients admitted to the coronary intens ...
... fluctuations should be minimized to 0.5 degree C. Core body temperature should be monitored continuously during TH Pulmonary artery catheters and central venous catheters are considered the gold standard for core temperature monitoring In practice, many patients admitted to the coronary intens ...
Nonlinear effects in subthreshold virtual electrode polarization
... 2,900 frames/s. Therefore, we had a space resolution of 312 m and a time resolution of 0.3 ms. For improvement of the signal-to-noise ratio, we averaged 10 consecutive recordings for each stimulus polarity kept at the same duration and current strength. Averaging resulted in a threefold improvement ...
... 2,900 frames/s. Therefore, we had a space resolution of 312 m and a time resolution of 0.3 ms. For improvement of the signal-to-noise ratio, we averaged 10 consecutive recordings for each stimulus polarity kept at the same duration and current strength. Averaging resulted in a threefold improvement ...
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.