Mechanical Alternans in Patients With Chronic Heart Failure
... alternating strong and weak beats with a constant beat to beat interval. The phenomenon has, for over a century, been recognized in patients with severe congestive heart failure caused by global left ventricular dysfunction (1–3). Other conditions related to the appearance of mechanical alternans ar ...
... alternating strong and weak beats with a constant beat to beat interval. The phenomenon has, for over a century, been recognized in patients with severe congestive heart failure caused by global left ventricular dysfunction (1–3). Other conditions related to the appearance of mechanical alternans ar ...
Ultrasonic Transducers for Medical Volumetric Imaging
... Three-dimensional (3-D) ultrasound imaging is a new, exciting technology that allows physicians to use ultrasound to view pathology as a volume, thereby enhancing comprehension of patient anatomy. Work on 3-D visualization began in the early 1980's. Some basic methods came from the group at Stanford ...
... Three-dimensional (3-D) ultrasound imaging is a new, exciting technology that allows physicians to use ultrasound to view pathology as a volume, thereby enhancing comprehension of patient anatomy. Work on 3-D visualization began in the early 1980's. Some basic methods came from the group at Stanford ...
Emrah Ermis, Emrah Ipek, Selami Demirelli From the Department of
... We present a rare case of double right coronary artery (RCA) arising from separate ostia. A 62 years old male patient was admitted with acute onset retrosternal chest pain. ECG was suggestive of sinus rhythm with intraventicular conduction delay and pathological q waves in D3 and avF derivations wit ...
... We present a rare case of double right coronary artery (RCA) arising from separate ostia. A 62 years old male patient was admitted with acute onset retrosternal chest pain. ECG was suggestive of sinus rhythm with intraventicular conduction delay and pathological q waves in D3 and avF derivations wit ...
Risk scores: a guide in clinical practice? Application of risk scores in
... regarding diagnosis, risk stratification, early pharmacological treatment, invasive procedures, and secondary prevention strategies in NST-ACS [2,3]. The guidelines can be used in selecting appropriate treatment for patients with NST-ACS. In deciding on the type of treatment, the guidelines recommen ...
... regarding diagnosis, risk stratification, early pharmacological treatment, invasive procedures, and secondary prevention strategies in NST-ACS [2,3]. The guidelines can be used in selecting appropriate treatment for patients with NST-ACS. In deciding on the type of treatment, the guidelines recommen ...
Acid-Evoked Currents in Cardiac Sensory Neurons
... Abstract—Sensory neurons that innervate the heart sense ischemia and mediate angina. To use patch-clamp methods to study ion channels on these cells, we fluorescently labeled cardiac sensory neurons (CSNs) in rats so that they could later be identified in dissociated primary culture of either nodose ...
... Abstract—Sensory neurons that innervate the heart sense ischemia and mediate angina. To use patch-clamp methods to study ion channels on these cells, we fluorescently labeled cardiac sensory neurons (CSNs) in rats so that they could later be identified in dissociated primary culture of either nodose ...
Sleep-Wake Behavior in Chronic Fatigue
... Inconsistencies in these findings may be explained by the well-recognized heterogeneity in cross-sectional samples of patients fulfilling diagnostic criteria for CFS.3,26 However, poor matching of cases to healthy subjects, particularly in terms of restricted activity and exercise levels may also be ...
... Inconsistencies in these findings may be explained by the well-recognized heterogeneity in cross-sectional samples of patients fulfilling diagnostic criteria for CFS.3,26 However, poor matching of cases to healthy subjects, particularly in terms of restricted activity and exercise levels may also be ...
Familial hypertrophic cardiomyopathy
... an electrocardiogram (a tracing of the electrical activity of your heart, also called ECG ) an echocardiogram (an ultrasound scan of your heart that gives pictures of your heart from which muscle wall thickness can be measured). Sometimes clinical tests can t give a definite diagnosis of FHC. In thi ...
... an electrocardiogram (a tracing of the electrical activity of your heart, also called ECG ) an echocardiogram (an ultrasound scan of your heart that gives pictures of your heart from which muscle wall thickness can be measured). Sometimes clinical tests can t give a definite diagnosis of FHC. In thi ...
Exercise-induced intrapulmonary arteriovenous shunting in healthy
... limitation, up to two-thirds of the total A-aDO2, have been predicted at metabolic rates as low as 2.0 l/min (19, 55). However, it is unlikely that a diffusion limitation would occur at these moderate metabolic rates when pulmonary capillary blood volume and pulmonary blood flow are submaximal and m ...
... limitation, up to two-thirds of the total A-aDO2, have been predicted at metabolic rates as low as 2.0 l/min (19, 55). However, it is unlikely that a diffusion limitation would occur at these moderate metabolic rates when pulmonary capillary blood volume and pulmonary blood flow are submaximal and m ...
A Guide For Patients: Patent Foramen Ovale
... PFO’s are fairly common — they occur in approximately 20% of the adult population. Unless you suffer from severe migraine headaches or have had a neurological event such as a stroke, chances are you wouldn’t need to seek medical treatment for your PFO. In fact, since PFO’s are so common, the detecti ...
... PFO’s are fairly common — they occur in approximately 20% of the adult population. Unless you suffer from severe migraine headaches or have had a neurological event such as a stroke, chances are you wouldn’t need to seek medical treatment for your PFO. In fact, since PFO’s are so common, the detecti ...
properties and filtering of optical action potentials Fluorescence
... decreases spatial resolution and induces distortion. Thus some researchers avoid applying any spatial filters (2), whereas others use complicated adaptive filters (14, 21, 22). This indicates a great need for the development of quantitative criteria that would enable a rational design strategy for s ...
... decreases spatial resolution and induces distortion. Thus some researchers avoid applying any spatial filters (2), whereas others use complicated adaptive filters (14, 21, 22). This indicates a great need for the development of quantitative criteria that would enable a rational design strategy for s ...
A Single Exposure to Particulate or Gaseous Air
... 1995 in Los Angeles, CA, USA, and when related to air pollution appear to be quite dependent on underlying heart disease (Pope et al., 2008). In rats with severe cardiac disease, exposures of increasing doses of a model PM raised the incidence of cardiac arrhythmia as well as other cardiographic abn ...
... 1995 in Los Angeles, CA, USA, and when related to air pollution appear to be quite dependent on underlying heart disease (Pope et al., 2008). In rats with severe cardiac disease, exposures of increasing doses of a model PM raised the incidence of cardiac arrhythmia as well as other cardiographic abn ...
Fetal Cardiovascular MRI Mike Seed, M.D. ; Christopher K. Macgowan, Ph.D.
... Techniques for measuring blood flow using phase-contrast (PC) MRI [10] and oxygen content using quantitative T2 MRI [11, 12] are well established, but imaging fetal* vessels requires modification of the existing techniques. Specific challenges include the small size of the vessels, the virtually con ...
... Techniques for measuring blood flow using phase-contrast (PC) MRI [10] and oxygen content using quantitative T2 MRI [11, 12] are well established, but imaging fetal* vessels requires modification of the existing techniques. Specific challenges include the small size of the vessels, the virtually con ...
Mesenteric Ischemia: Silent Killer
... • In patients such as ours, mesenteric ischemia may be a marker of other life-threatening conditions even if it is not the primary cause of death • Mesenteric ischemia can be acute (from hypotension, hypovolemia, embolism) or chronic (from atherosclerosis) • In patient with risk factors, always get ...
... • In patients such as ours, mesenteric ischemia may be a marker of other life-threatening conditions even if it is not the primary cause of death • Mesenteric ischemia can be acute (from hypotension, hypovolemia, embolism) or chronic (from atherosclerosis) • In patient with risk factors, always get ...
Relation between Heart Rate and Energy Expenditure in
... airtight perspex hood, and the iris diaphragm is lightly cinched around the neck, permitting air to enter only through the neck aperture. The hood is exhausted through a manifold at a constant rate precisely measured by a Fleisch pneumotachometer (Dynasciences, Blue Bell. PA). The exhaust air is pas ...
... airtight perspex hood, and the iris diaphragm is lightly cinched around the neck, permitting air to enter only through the neck aperture. The hood is exhausted through a manifold at a constant rate precisely measured by a Fleisch pneumotachometer (Dynasciences, Blue Bell. PA). The exhaust air is pas ...
Novel solutions applied in transseptal puncture technique: a
... Percutaneous access of the left atrium (LA) is required in a large number of minimally invasive procedures, such as catheter ablation for atrial fibrillation, paravalvular leakage repair, percutaneous mitral valve replacement, pulmonary vein isolation and left atrial appendage closure [1, 2]. These ...
... Percutaneous access of the left atrium (LA) is required in a large number of minimally invasive procedures, such as catheter ablation for atrial fibrillation, paravalvular leakage repair, percutaneous mitral valve replacement, pulmonary vein isolation and left atrial appendage closure [1, 2]. These ...
Analysis of Left Ventricular Wall Motion by Reflected
... its volume6 and mural thickness.7 Despite these applications, no attempt has previously been made to explain the waveform of the echoes from the left ventricular walls in terms of the geometry and movements of the left ventricle during the cardiac cycle. Hence, this was the principal aim of the pres ...
... its volume6 and mural thickness.7 Despite these applications, no attempt has previously been made to explain the waveform of the echoes from the left ventricular walls in terms of the geometry and movements of the left ventricle during the cardiac cycle. Hence, this was the principal aim of the pres ...
Perventricular device closure of congenital muscular ventricular
... long cardiac catheterization procedure. Vascular issues may also be a limiting factor. In addition, it has been shown that infants weighing less than 5–6 kg are at risk for complications during percutaneous closure of the MVSD [5,10] . On the other hand, one may consider undertaking the perventricul ...
... long cardiac catheterization procedure. Vascular issues may also be a limiting factor. In addition, it has been shown that infants weighing less than 5–6 kg are at risk for complications during percutaneous closure of the MVSD [5,10] . On the other hand, one may consider undertaking the perventricul ...
Cardiac malpositions and syndromes with right or left atrial isomerism
... (mirror-image dextrocardia or situs inversus with dextrocardia, or situs inversus completus). In these conditions associated heart defects are rare. The true incidence of this situation is low, but also not exactly known, since persons with this abnormality are asymptomatic and are not identified un ...
... (mirror-image dextrocardia or situs inversus with dextrocardia, or situs inversus completus). In these conditions associated heart defects are rare. The true incidence of this situation is low, but also not exactly known, since persons with this abnormality are asymptomatic and are not identified un ...
Ultrasound - The Brookside Associates
... Fetal heart beat detectors generate a constant sound. Some of the sound is reflected back toward the transducer. The frequency of the outgoing sound and incoming sound is the same, UNLESS the object is moving (either toward the transducer or away from it. Blood passing through the heart or major pl ...
... Fetal heart beat detectors generate a constant sound. Some of the sound is reflected back toward the transducer. The frequency of the outgoing sound and incoming sound is the same, UNLESS the object is moving (either toward the transducer or away from it. Blood passing through the heart or major pl ...
Contribution of tonic vagal modulation of heart rate, central
... breathing normally, ~b! breathing compressed room air through a face mask, and ~c! breathing compressed 5% CO 2-enriched air through a face mask. All experimental sessions took place between 11 a.m. and 4 p.m., and lasted approximately 2.5 hr. After general instructions, the recording electrodes wer ...
... breathing normally, ~b! breathing compressed room air through a face mask, and ~c! breathing compressed 5% CO 2-enriched air through a face mask. All experimental sessions took place between 11 a.m. and 4 p.m., and lasted approximately 2.5 hr. After general instructions, the recording electrodes wer ...
Leiomyosarcoma of the Inferior Vena Cava - Heart
... stage of the illness, the liver was not enlarged. A few months after delivery her complaints reappeared, but at this stage the liver was enlarged. This observation suggested that the primary disease process arose from the abdominal area, causing occlusion of the inferior vena cava, extending cranial ...
... stage of the illness, the liver was not enlarged. A few months after delivery her complaints reappeared, but at this stage the liver was enlarged. This observation suggested that the primary disease process arose from the abdominal area, causing occlusion of the inferior vena cava, extending cranial ...
Print - Circulation
... or a pulmonary atresia with VSD.2 Second, only by histology it is possible to recognize whether a collateral branch that arises from the aortic arch is a ductus arteriosus or a systemic collateral artery.8-10 Third, debate exists on whether the collateral arterial supply should be considered functio ...
... or a pulmonary atresia with VSD.2 Second, only by histology it is possible to recognize whether a collateral branch that arises from the aortic arch is a ductus arteriosus or a systemic collateral artery.8-10 Third, debate exists on whether the collateral arterial supply should be considered functio ...
Understanding Atrial Fibrillation
... AF affects everyone differently. One person with a fast heart rate may not feel well. Another person won’t feel the AF at all. Over time, fast heart rates can cause the ventricles to become larger and weaker. Also, once AF starts, the atria undergo changes that make the AF more likely to continue. T ...
... AF affects everyone differently. One person with a fast heart rate may not feel well. Another person won’t feel the AF at all. Over time, fast heart rates can cause the ventricles to become larger and weaker. Also, once AF starts, the atria undergo changes that make the AF more likely to continue. T ...