Estimating coupling directions in the cardiorespiratory system using
... Different linear and nonlinear approaches have been applied for studying couplings within the cardiorespiratory system, such as spectral analysis [4–7], Granger causality [8,9], phase dynamics [10,11], conditional information [12,13], joint symbolic dynamics [14,15] and model-based linear closed-loo ...
... Different linear and nonlinear approaches have been applied for studying couplings within the cardiorespiratory system, such as spectral analysis [4–7], Granger causality [8,9], phase dynamics [10,11], conditional information [12,13], joint symbolic dynamics [14,15] and model-based linear closed-loo ...
Resting Heart Rate and the Risk of Heart Failure in Healthy Adults
... continuous variable. In the first model, we only adjusted for age. In the second model, we entered traditional cardiovascular risk factors, including age, smoking status, systolic blood pressure, antihypertensive treatment, diabetes mellitus, body mass index, total cholesterol, and high-density lipo ...
... continuous variable. In the first model, we only adjusted for age. In the second model, we entered traditional cardiovascular risk factors, including age, smoking status, systolic blood pressure, antihypertensive treatment, diabetes mellitus, body mass index, total cholesterol, and high-density lipo ...
Echocardiographic Variables After Left Ventricular Assist Device
... compound end point (90-day mortality, readmission for heart failure, or New York Heart Association class III or higher at the end of the 90-day period). The echocardiographic associations examined included estimated LVAD flow, with and without native LV contribution, interventricular septal position ...
... compound end point (90-day mortality, readmission for heart failure, or New York Heart Association class III or higher at the end of the 90-day period). The echocardiographic associations examined included estimated LVAD flow, with and without native LV contribution, interventricular septal position ...
Chap 41 - TeacherWeb
... • Oral iron if anemia develops • Spontaneous closure may occur by 6 mon ...
... • Oral iron if anemia develops • Spontaneous closure may occur by 6 mon ...
Coronary Artery Aneurysms: An Update
... medium sized muscular arteries, such as coronary arteries (Libby, 2002). Dauod et al. (1963) believed that aneurysms are formed as a result of poststenotic transformation of kinetic energy to potential energy and pressure abnormalities in the vessel. Moreover, Siouffi et al. (1984) have explained th ...
... medium sized muscular arteries, such as coronary arteries (Libby, 2002). Dauod et al. (1963) believed that aneurysms are formed as a result of poststenotic transformation of kinetic energy to potential energy and pressure abnormalities in the vessel. Moreover, Siouffi et al. (1984) have explained th ...
J Soler-Soler, J Sagristá-Sauleda, A Cabrera, J Sauleda-Parés, J Iglesias-Berengué,... Permanyer-Miralda and J Roca-Llop
... shortly after administration of verapamil. As this maneuver had been unsuccessful before verapamil we assume the the drug had some influence in the interruption of the tachycardia. Our results are similar to those reported by Bein et al.,22 who obtained sinus rhythm in all the 70 attacks of PSVT in ...
... shortly after administration of verapamil. As this maneuver had been unsuccessful before verapamil we assume the the drug had some influence in the interruption of the tachycardia. Our results are similar to those reported by Bein et al.,22 who obtained sinus rhythm in all the 70 attacks of PSVT in ...
JEPonline Physiological Responses to Dangling and Standing in
... report by McDaniel (25) who studied 30 healthy women with a mean age of 41 yrs. Interestingly, though, Kennedy and Crawford (19) reported that HR did not increase in the patients after dangling. This finding was consistent with the findings from a recent study of 24 cardiac rehabilitation patients ( ...
... report by McDaniel (25) who studied 30 healthy women with a mean age of 41 yrs. Interestingly, though, Kennedy and Crawford (19) reported that HR did not increase in the patients after dangling. This finding was consistent with the findings from a recent study of 24 cardiac rehabilitation patients ( ...
Coronary Computed Tomographic Angiography in
... radiation needed to construct a high quality 3D scan of the coronary arteries. While studies consistently show the very high (upper nineties) negative predictive value (or the absence of disease) based on CT [Hecht07,Meijboom08] the ability to precisely define coronary artery disease has varied, lea ...
... radiation needed to construct a high quality 3D scan of the coronary arteries. While studies consistently show the very high (upper nineties) negative predictive value (or the absence of disease) based on CT [Hecht07,Meijboom08] the ability to precisely define coronary artery disease has varied, lea ...
clinically applicable alternative to Emax
... Heart disease is the #1 cause of death worldwide, especially in the low income countries. The percent death rate due to heart disease increased 4% in high-income countries and 42% in low-income countries1. In the USA, heart disease continues to kill more people than cancer. In 2008 alone, over 600,0 ...
... Heart disease is the #1 cause of death worldwide, especially in the low income countries. The percent death rate due to heart disease increased 4% in high-income countries and 42% in low-income countries1. In the USA, heart disease continues to kill more people than cancer. In 2008 alone, over 600,0 ...
Changes in Plasma Norepinephrine, Blood Pressure
... We consider that there are two conclusions which can be drawn from our observations; first, they support the hypothesis that plasma norepinephrine reflects short-term changes in sympathetic activity in man; and second, they suggest ways in which the importance of the sympathetic nervous system in in ...
... We consider that there are two conclusions which can be drawn from our observations; first, they support the hypothesis that plasma norepinephrine reflects short-term changes in sympathetic activity in man; and second, they suggest ways in which the importance of the sympathetic nervous system in in ...
Challenge Questions
... physiology that he asks you to help with a particularly difficult case. He proceeds to tell you that his patient has a prolonged PQ wave in their electrocardiogram (ECG), which you know means that the delay between the atrial contraction and ventricle contraction is too long. What heart structure is ...
... physiology that he asks you to help with a particularly difficult case. He proceeds to tell you that his patient has a prolonged PQ wave in their electrocardiogram (ECG), which you know means that the delay between the atrial contraction and ventricle contraction is too long. What heart structure is ...
Heart Online First, published on December 30, 2005 as 10.1136/hrt.2005.077164
... No-reflow has been associated with severe myocardial injury, progressive left ventricular remodeling, congestive heart failure, and poor prognosis [4-6]. Therefore, myocardial tissue perfusion is now accepted as a target of reperfusion therapy for AMI [7]. Specific platelet glycoprotein IIb/IIIa rec ...
... No-reflow has been associated with severe myocardial injury, progressive left ventricular remodeling, congestive heart failure, and poor prognosis [4-6]. Therefore, myocardial tissue perfusion is now accepted as a target of reperfusion therapy for AMI [7]. Specific platelet glycoprotein IIb/IIIa rec ...
Evaluation of Bi-ventricular Coronary Flow Patterns Using High
... ischemia (Tarnavski et al. 2004). The mouse with TAC has been used to induce pressure overload to the left ventricle for observation and intervention of the ventricular remodeling (Rockman et al. 1991). The flow dynamics of all coronary arteries at different stages after TAC would provide valuable i ...
... ischemia (Tarnavski et al. 2004). The mouse with TAC has been used to induce pressure overload to the left ventricle for observation and intervention of the ventricular remodeling (Rockman et al. 1991). The flow dynamics of all coronary arteries at different stages after TAC would provide valuable i ...
Can heart rate variability become a screening tool for
... these subjects also had relatively low values of both LF and HF power, which was presented as absolute values. The latter finding could also indicate reduced vagal outflow in this subgroup. HRV results in this clinical anesthesia context are difficult to interpret because of several problems, some n ...
... these subjects also had relatively low values of both LF and HF power, which was presented as absolute values. The latter finding could also indicate reduced vagal outflow in this subgroup. HRV results in this clinical anesthesia context are difficult to interpret because of several problems, some n ...
Heart rhythms - British Heart Foundation
... The term ‘palpitations’ is often used to describe the sensation of feeling your own heart beating. Some people say that having palpitations feels like a fluttering in their chest, or their heart pounding. Others describe it as feeling like a thud or movement in their chest. Some say they feel their ...
... The term ‘palpitations’ is often used to describe the sensation of feeling your own heart beating. Some people say that having palpitations feels like a fluttering in their chest, or their heart pounding. Others describe it as feeling like a thud or movement in their chest. Some say they feel their ...
hyperoxia - Anaesthetics
... the effects of hypoxia on cardiac tissue are well understood, increasingly studies are beginning to consistently show the detrimental effects of hyperoxia on cardiac function, with decreased coronary blood flow, increased coronary resistance and decreased myocardial oxygen consumption being demonstr ...
... the effects of hypoxia on cardiac tissue are well understood, increasingly studies are beginning to consistently show the detrimental effects of hyperoxia on cardiac function, with decreased coronary blood flow, increased coronary resistance and decreased myocardial oxygen consumption being demonstr ...
Heart rate during thermoregulation in P. barbata
... experiments (2–3 weeks), after which they were released at their point of capture. Lizards were transferred to a constant temperature room (22.5 °C) at least 24 h before experiments, so that body temperature Tb equalled ambient temperature at the start of experimentation. Heart rate signals from one ...
... experiments (2–3 weeks), after which they were released at their point of capture. Lizards were transferred to a constant temperature room (22.5 °C) at least 24 h before experiments, so that body temperature Tb equalled ambient temperature at the start of experimentation. Heart rate signals from one ...
Repolarization Phase at Various Sites of the Right Atrium
... The pathways of atrial repolarization waves were measured by the foregoing method and are shown in the expanded diagram of the right atrium (fig. 4). Depolarization and repolarization of eight different examples are illustrated in figure 4A and B, respectively. The isochronous lines indicate the app ...
... The pathways of atrial repolarization waves were measured by the foregoing method and are shown in the expanded diagram of the right atrium (fig. 4). Depolarization and repolarization of eight different examples are illustrated in figure 4A and B, respectively. The isochronous lines indicate the app ...
Anticoagulant treatment for acute pulmonary embolism: a pathophysiology- based clinical approach
... the clinical benefit of its reversal are available in humans [17–20]. As a non-preconditioned, thin-walled right ventricle is unable to overcome a mean pulmonary artery pressure >40 mmHg, the rapid rise in afterload results in right ventricular dilation (fig. 1). Dilation alters the contractile prop ...
... the clinical benefit of its reversal are available in humans [17–20]. As a non-preconditioned, thin-walled right ventricle is unable to overcome a mean pulmonary artery pressure >40 mmHg, the rapid rise in afterload results in right ventricular dilation (fig. 1). Dilation alters the contractile prop ...
radiofrequency catheter ablation for supraventricular tachycardias
... intolerance or recurrent symptomatic SVT.3,5–7 The charm of this treatment modality is that most of the patients, once treated with EP/RFA, can have complete cure of their arrhythmia, and do not require any further drug therapy or follow-up. ...
... intolerance or recurrent symptomatic SVT.3,5–7 The charm of this treatment modality is that most of the patients, once treated with EP/RFA, can have complete cure of their arrhythmia, and do not require any further drug therapy or follow-up. ...
carl john wiggers - National Academy of Sciences
... there in May 1912, Wiggers found that, as a representative of Lusk's group, he was granted exceptional privileges in observing the optical equipment and methods that the usually reserved, even secretive, Otto Frank was developing in his laboratory for measuring rapidly and accurately not only blood ...
... there in May 1912, Wiggers found that, as a representative of Lusk's group, he was granted exceptional privileges in observing the optical equipment and methods that the usually reserved, even secretive, Otto Frank was developing in his laboratory for measuring rapidly and accurately not only blood ...
Catheter ablation in selected patients with depressed left ventricular
... ablated. If AT could not be terminated by catheter ablation, SR was restored by DCC. When SR was obtained either by catheter ablation or by DCC, bidirectional block was assessed at the PV antra (entrance and exit block),20 the cavo-tricuspid isthmus,15,21 the LA roof, and the mitral isthmus linear l ...
... ablated. If AT could not be terminated by catheter ablation, SR was restored by DCC. When SR was obtained either by catheter ablation or by DCC, bidirectional block was assessed at the PV antra (entrance and exit block),20 the cavo-tricuspid isthmus,15,21 the LA roof, and the mitral isthmus linear l ...
Dual-phase multi-detector computed tomography - Heart
... lesion were identified in 99 (92.5%) patients by MDCTmyocardium maps plus CTA. The concordance between MDCT and SPECT for detecting infarcted myocardium was good (kappa = 0.702). The correlation between MDCTjeopardised score and SPECT-SRS was 0.741. The correlation between CTA and CCA for culprit le ...
... lesion were identified in 99 (92.5%) patients by MDCTmyocardium maps plus CTA. The concordance between MDCT and SPECT for detecting infarcted myocardium was good (kappa = 0.702). The correlation between MDCTjeopardised score and SPECT-SRS was 0.741. The correlation between CTA and CCA for culprit le ...
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... with using virtual reality as a method for medical and surgical training. The student/physician gains a greater sense of spatial aware- ...
... with using virtual reality as a method for medical and surgical training. The student/physician gains a greater sense of spatial aware- ...
Dextro-Transposition of the great arteries
dextro-Transposition of the great arteries (d-Transposition of the great arteries, dextro-TGA, or d-TGA), sometimes also referred to as complete transposition of the great arteries, is a birth defect in the large arteries of the heart. The primary arteries (the aorta and the pulmonary artery) are transposed.It is called a cyanotic congenital heart defect (CHD) because the newborn infant turns blue from lack of oxygen.In segmental analysis, this condition is described as ventriculoarterial discordance with atrioventricular concordance, or just ventriculoarterial discordance.d-TGA is often referred to simply as transposition of the great arteries (TGA); however, TGA is a more general term which may also refer to levo-transposition of the great arteries (l-TGA).Another term commonly used to refer to both d-TGA and l-TGA is transposition of the great vessels (TGV), although this term might have an even broader meaning than TGA.