Introduction to fetal echo
... There are two arches in the fetus and they should be distinguished. The aortic arch is recognized from the curve of the ductus by the following criteria. The brachiocephalic vessels originate from the aortic arch, while no vessels emanate from the ductus. The curve of the aortic arch is gentler than ...
... There are two arches in the fetus and they should be distinguished. The aortic arch is recognized from the curve of the ductus by the following criteria. The brachiocephalic vessels originate from the aortic arch, while no vessels emanate from the ductus. The curve of the aortic arch is gentler than ...
Document
... Demonstration of a diagnostic value of HR variability analysis as well as relationship between ...
... Demonstration of a diagnostic value of HR variability analysis as well as relationship between ...
Brief Communication Direct Detection of Free Radicals in the
... species such as superoxide or hydroxyl free radicals are generated. The most probable sources of these oxygen radicals are the xanthine oxidase pathway, the electron transport chain and catecholamine oxidation. Leukocytes are unlikely to represent a significant source since there are virtually no wh ...
... species such as superoxide or hydroxyl free radicals are generated. The most probable sources of these oxygen radicals are the xanthine oxidase pathway, the electron transport chain and catecholamine oxidation. Leukocytes are unlikely to represent a significant source since there are virtually no wh ...
AHA/ACC Scientific Statement
... and should engage in some form of physical activity and should avoid a sedentary lifestyle. Clinicians should encourage their patients to engage in healthy physical activities, bearing in mind specific features in some patients, such as residual obstruction, pulmonary vascular disease, low systemic ...
... and should engage in some form of physical activity and should avoid a sedentary lifestyle. Clinicians should encourage their patients to engage in healthy physical activities, bearing in mind specific features in some patients, such as residual obstruction, pulmonary vascular disease, low systemic ...
QT Studies Therapeutic Area User Guide v1
... differences between groups of subjects treated with an experimental drug compared to a control treatment to be of interest. This difference in interests leads to the need for different processing. Also, TQT studies are generally limited to adult healthy volunteers of a non-geriatric age and having n ...
... differences between groups of subjects treated with an experimental drug compared to a control treatment to be of interest. This difference in interests leads to the need for different processing. Also, TQT studies are generally limited to adult healthy volunteers of a non-geriatric age and having n ...
ASSOCIATE DIRECTOR SCIENTIFIC COORDINATION FDA NATIONAL TOXICOLOGY PROGRAM LIAISON
... of Torsade Proarrhythmia, under conditions of therapeutic use. Acrylamide and Glycidamide The presence of acrylamide in processed starchy foods first came to the attention of the FDA on April 24, 2002, when researchers at the Swedish National Food Administration and Stockholm University reported fin ...
... of Torsade Proarrhythmia, under conditions of therapeutic use. Acrylamide and Glycidamide The presence of acrylamide in processed starchy foods first came to the attention of the FDA on April 24, 2002, when researchers at the Swedish National Food Administration and Stockholm University reported fin ...
Cardiac Interbeat Interval Dynamics From Childhood to
... Sirkku M. Pikkujämsä, MD; Timo H. Mäkikallio, MD, MSc; Leif B. Sourander, MD; Ismo J. Räihä, MD; Pauli Puukka, MA; Jarmo Skyttä, MD; Chung-Kang Peng, PhD; Ary L. Goldberger, MD; Heikki V. Huikuri, MD Background—New methods of R-R interval variability based on fractal scaling and nonlinear dyna ...
... Sirkku M. Pikkujämsä, MD; Timo H. Mäkikallio, MD, MSc; Leif B. Sourander, MD; Ismo J. Räihä, MD; Pauli Puukka, MA; Jarmo Skyttä, MD; Chung-Kang Peng, PhD; Ary L. Goldberger, MD; Heikki V. Huikuri, MD Background—New methods of R-R interval variability based on fractal scaling and nonlinear dyna ...
The Apex Cardiogram in Left Ventricular Outflow Tract
... rest. In patients T.T. and M.J. the diagnosis was not suspected until cardiac catheterization. The former had a ventriculo-aortic gradient of 18 mm. Hg during exercise. In patients M.S., R.G., R.J., and M.P. the diagnosis had been suggested by clinical examination, since these patients presented man ...
... rest. In patients T.T. and M.J. the diagnosis was not suspected until cardiac catheterization. The former had a ventriculo-aortic gradient of 18 mm. Hg during exercise. In patients M.S., R.G., R.J., and M.P. the diagnosis had been suggested by clinical examination, since these patients presented man ...
WHY STUDY SYMPATHETIC NERVOUS SYSTEM?
... around the world. However, during last decades, an improvement was made in diagnosis and therapy of cardiovascular diseases, there was still a need for better understanding ...
... around the world. However, during last decades, an improvement was made in diagnosis and therapy of cardiovascular diseases, there was still a need for better understanding ...
The Dicrotic Arterial Pulse
... of the normal arterial pressure pulse has been ascribed to the rebound of arterial blood against a closed aortic valve. However, peripheral factors contribute materially to its formation.8-12 There is a decrease or loss of the dicrotic wave with age, hypertension, generalized atherosclerosis, and di ...
... of the normal arterial pressure pulse has been ascribed to the rebound of arterial blood against a closed aortic valve. However, peripheral factors contribute materially to its formation.8-12 There is a decrease or loss of the dicrotic wave with age, hypertension, generalized atherosclerosis, and di ...
UvA-DARE (Digital Academic Repository)
... 2 days of development - stage 12 (Figure 3) Expression of Cx40 at the venous pole of the heart was first observed at stage 12, in the myocardium that laid bilaterally from the dorsal mesocardium, reflecting the differentiation of the left and right atrium from the left and right heart-forming region ...
... 2 days of development - stage 12 (Figure 3) Expression of Cx40 at the venous pole of the heart was first observed at stage 12, in the myocardium that laid bilaterally from the dorsal mesocardium, reflecting the differentiation of the left and right atrium from the left and right heart-forming region ...
Abnormal Echocardiogram
... provides a convenient classification of sound into three categories as listed in Table 2. Sound frequency employed in medical applications ranges from 1 to 15 MHz and therefore they are in the ultrasonic range. The choice of frequency used in any medical application is a compromise between resolving ...
... provides a convenient classification of sound into three categories as listed in Table 2. Sound frequency employed in medical applications ranges from 1 to 15 MHz and therefore they are in the ultrasonic range. The choice of frequency used in any medical application is a compromise between resolving ...
Effect of 2,3,7,8-Tetrachlorodibenzo-p
... decreased at maternal doses <3.0 lg TCDD/kg (Fig. 1). This decrease in heart-to-body weight ratio appeared to plateau at >6.0 lg TCDD/kg. TCDD Reduced Fetal Cardiocyte Proliferation To determine if the reduction in heart weight at GD 17.5 was associated with a decrease in cardiac proliferation, we s ...
... decreased at maternal doses <3.0 lg TCDD/kg (Fig. 1). This decrease in heart-to-body weight ratio appeared to plateau at >6.0 lg TCDD/kg. TCDD Reduced Fetal Cardiocyte Proliferation To determine if the reduction in heart weight at GD 17.5 was associated with a decrease in cardiac proliferation, we s ...
Inotropic, chronotropic, and dromotropic effects - AJP
... on a thermowriting rectigraph (model WT 685T; Nihon Kohden, Tokyo, Japan). The right atrial pressure was measured by a catheter-tip pressure transducer (model TCP2, Nihon Kohden) that was inserted into the middle of the right atrial cavity via the right jugular vein. Right atrial pressure and RAdP/d ...
... on a thermowriting rectigraph (model WT 685T; Nihon Kohden, Tokyo, Japan). The right atrial pressure was measured by a catheter-tip pressure transducer (model TCP2, Nihon Kohden) that was inserted into the middle of the right atrial cavity via the right jugular vein. Right atrial pressure and RAdP/d ...
COX-2–Dependent Cardiac Failure in Gh/tTG Transgenic Mice
... Urine collections (24-hour) from 7- to 10-month-old mice, corresponding to the time of evaluation of cardiac function, were analyzed as previously described.28,29 ...
... Urine collections (24-hour) from 7- to 10-month-old mice, corresponding to the time of evaluation of cardiac function, were analyzed as previously described.28,29 ...
Mean Velocity of Fiber Shortening
... Methods Fifty patients, 7 to 62 years of age, were studied during diagnostic left heart catheterization. Their diagnoses are listed in tables 1-3. The first group consisted of 13 patients in whom mechanical performance of the left ventricle was considered to be normal. Tension-velocity data in six o ...
... Methods Fifty patients, 7 to 62 years of age, were studied during diagnostic left heart catheterization. Their diagnoses are listed in tables 1-3. The first group consisted of 13 patients in whom mechanical performance of the left ventricle was considered to be normal. Tension-velocity data in six o ...
Assessment of calcium scoring performance in cardiac computed
... It is clear that this motion function can only be an example for the movement of structures in the heart, as there are big differences for varying positions on the heart walls, different heart rates, and above all between different individuals. Especially for the right coronary artery, the amplitude ...
... It is clear that this motion function can only be an example for the movement of structures in the heart, as there are big differences for varying positions on the heart walls, different heart rates, and above all between different individuals. Especially for the right coronary artery, the amplitude ...
Relationships Between Right Ventricular Function, Body
... (available in 75%) and right atrial pressure estimate, based on inferior vena cava diameter (22). RVD was quantified (0 to 3) in an apical 4-chamber view by using tricuspid annular systolic excursion (M-mode TAPSE) (23) and tissue systolic velocity (Sm) (24) with the following cutoffs: RVD0, normal: ...
... (available in 75%) and right atrial pressure estimate, based on inferior vena cava diameter (22). RVD was quantified (0 to 3) in an apical 4-chamber view by using tricuspid annular systolic excursion (M-mode TAPSE) (23) and tissue systolic velocity (Sm) (24) with the following cutoffs: RVD0, normal: ...
PDF
... from two sets of thirty consecutive ECG complexes (beats), one recorded before (i.e., at rest) and the other immediately following a control submaximal exercise test (i.e., within 5 beats of stopping the treadmill). The effects of exercise on the duration of the T-wave’s terminal portion (i.e., peak ...
... from two sets of thirty consecutive ECG complexes (beats), one recorded before (i.e., at rest) and the other immediately following a control submaximal exercise test (i.e., within 5 beats of stopping the treadmill). The effects of exercise on the duration of the T-wave’s terminal portion (i.e., peak ...
Implantable Cardioverter Defibrillator (ICD) Therapy
... death can occur within just a few minutes. These types of arrhythmias occur in individuals of all ages, from young children to the elderly. Studies have shown that VT often occurs in patients who have had damage from a heart attack, cardiac surgery, or other conditions. Some people with inherited he ...
... death can occur within just a few minutes. These types of arrhythmias occur in individuals of all ages, from young children to the elderly. Studies have shown that VT often occurs in patients who have had damage from a heart attack, cardiac surgery, or other conditions. Some people with inherited he ...
The implications of genetic mutations in the sodium channel gene (SCN5A) REVIEW
... both diseases exhibit very different clinical ECG features but show coincidences that emanate from their common genetic root. It is not yet clear why the ECG pattern of affected individuals with BS vary from day to day and why most affected persons are males. Sex and hormonal differences in ion channel ...
... both diseases exhibit very different clinical ECG features but show coincidences that emanate from their common genetic root. It is not yet clear why the ECG pattern of affected individuals with BS vary from day to day and why most affected persons are males. Sex and hormonal differences in ion channel ...
Medic One/Emergency Medical Services
... ETCO2 – carbon dioxide content of air measured at the end of exhalation impedence threshold device (ITD) – valve that prevents air from entering lungs during the decompression phase of CPR; aka ResQ POD inclusion/exclusion criteria – decision list to determine whether a victim of cardiac arrest meet ...
... ETCO2 – carbon dioxide content of air measured at the end of exhalation impedence threshold device (ITD) – valve that prevents air from entering lungs during the decompression phase of CPR; aka ResQ POD inclusion/exclusion criteria – decision list to determine whether a victim of cardiac arrest meet ...
molecular cloning and reduced expression in experimental heart
... constant perfusion pressure (65 mmHg). The perfusion pressure was kept constant throughout the experiment. Baseline values for ANP secretion were obtained after 30-min equilibration while the LA pressure (LAP) was 0 mmHg. ANP release was stimulated by an elevation of the LAP to 10 mmHg. Perfusates w ...
... constant perfusion pressure (65 mmHg). The perfusion pressure was kept constant throughout the experiment. Baseline values for ANP secretion were obtained after 30-min equilibration while the LA pressure (LAP) was 0 mmHg. ANP release was stimulated by an elevation of the LAP to 10 mmHg. Perfusates w ...
full paper
... Bruno Madore4, Gunnar Farneb7ck, Carl-Fredrik Westin, Alejandra Durán-Mendicuti Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA ...
... Bruno Madore4, Gunnar Farneb7ck, Carl-Fredrik Westin, Alejandra Durán-Mendicuti Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA ...
Running head: ATRIAL FIBRILLATION
... knowledgeable healthcare. More and more responsibility is being placed on the patients to gain knowledge about their health issues and their subsequent causes and treatment. The public knowledge of major cardiac events such as hypertension, heart attack and angina are becoming more commonly known to ...
... knowledgeable healthcare. More and more responsibility is being placed on the patients to gain knowledge about their health issues and their subsequent causes and treatment. The public knowledge of major cardiac events such as hypertension, heart attack and angina are becoming more commonly known to ...
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.