Nerve activates contraction
... Amount of blood in the heart determines how stretched the fibers are The more blood returned to the heart per minute, the more stretched the fibers are and the stronger the contraction is. Startling’s Law ensures that increase amounts of blood returned to the heart are pumped out of it ...
... Amount of blood in the heart determines how stretched the fibers are The more blood returned to the heart per minute, the more stretched the fibers are and the stronger the contraction is. Startling’s Law ensures that increase amounts of blood returned to the heart are pumped out of it ...
Outcomes of Minimally Invasive Mitral Valve
... Presently, the most common type of surgery performed for functional mitral regurgitation is an undersized mitral annuloplasty, which was popularized by Bolling and colleagues.23 In this technique, a small (size, 24Y26 mm) mitral annuloplasty ring is used, which causes a reduction in the anteroposter ...
... Presently, the most common type of surgery performed for functional mitral regurgitation is an undersized mitral annuloplasty, which was popularized by Bolling and colleagues.23 In this technique, a small (size, 24Y26 mm) mitral annuloplasty ring is used, which causes a reduction in the anteroposter ...
Artifacts and Pitfalls in Myocardial Perfusion Imaging
... Myocardial perfusion imaging (MPI) is an important imaging modality in the management of patients with cardiovascular disease. MPI plays a key role in diagnosing cardiovascular disease, establishing prognosis, assessing the effectiveness of therapy, and evaluating viability. However, MPI is a comple ...
... Myocardial perfusion imaging (MPI) is an important imaging modality in the management of patients with cardiovascular disease. MPI plays a key role in diagnosing cardiovascular disease, establishing prognosis, assessing the effectiveness of therapy, and evaluating viability. However, MPI is a comple ...
Normal pattern and physiological significance of
... In 1O cardiac patients in whom an organic lesion of the mitral valve was excluded by standard investigation procedures during which a diagnostic transseptal catheterization for pressure measurements in the left heart was performed, the authors placed a directional Doppler ultrasonic catheter tip vel ...
... In 1O cardiac patients in whom an organic lesion of the mitral valve was excluded by standard investigation procedures during which a diagnostic transseptal catheterization for pressure measurements in the left heart was performed, the authors placed a directional Doppler ultrasonic catheter tip vel ...
Diagnosing primary diastolic heart failure
... that same phase of the cardiac cycle as diastolic. In conclusion, from all the above it must be clear that echo-Doppler has been clearly overrated with respect to its potential value in evaluating diastolic function, in particular by promoting measurements such as isovolumic ventricular relaxation t ...
... that same phase of the cardiac cycle as diastolic. In conclusion, from all the above it must be clear that echo-Doppler has been clearly overrated with respect to its potential value in evaluating diastolic function, in particular by promoting measurements such as isovolumic ventricular relaxation t ...
letters to the editor
... additional features of 22q11 deletion syndrome, including characteristic or subtle facial dysmorphisms, palatal anomalies, absent thymus, T-lymphocyte deficit, hypocalcemia or developmental disabilities, occur in deleted patients with conotruncal defect (3–9). Interestingly, 80% of the patients with ...
... additional features of 22q11 deletion syndrome, including characteristic or subtle facial dysmorphisms, palatal anomalies, absent thymus, T-lymphocyte deficit, hypocalcemia or developmental disabilities, occur in deleted patients with conotruncal defect (3–9). Interestingly, 80% of the patients with ...
Multiple Hydatid Cysts of Pericardium and Epicardium
... was normal. The patient was given albendazole treatment (20 mg/kg/day) and was submitted to open heart surgery after ten days. Median sternotomy was performed, and multiple cysts surrounding his heart were demonstrated. Enucleation of cysts was planned without cardiopulmonary bypass (CPB) due to the ...
... was normal. The patient was given albendazole treatment (20 mg/kg/day) and was submitted to open heart surgery after ten days. Median sternotomy was performed, and multiple cysts surrounding his heart were demonstrated. Enucleation of cysts was planned without cardiopulmonary bypass (CPB) due to the ...
in Congestive Heart Failure
... Mean systemic arterial pressure (fig. IA) was lowered by NP from 89.9 ± 4.4 to 77.7 ± 1.6 mm Hg (P < 0.01); P was unchanged from control (C)- by dopamine. With simultaneous NP and dopamine infusion P was reduced to 83.1 ± 3.6 mm Hg (P < 0.05 vs C; P < 0.05 vs dopamine alone). The mean heart rate of ...
... Mean systemic arterial pressure (fig. IA) was lowered by NP from 89.9 ± 4.4 to 77.7 ± 1.6 mm Hg (P < 0.01); P was unchanged from control (C)- by dopamine. With simultaneous NP and dopamine infusion P was reduced to 83.1 ± 3.6 mm Hg (P < 0.05 vs C; P < 0.05 vs dopamine alone). The mean heart rate of ...
Cardio85-CardiacMuscleMechanicsPt3
... a. ESV incr because of decreased ejection b. EDV decr c. Results in more favorable sarcomere lengths d. Improved force and velocity of contraction despite decr contractility e. The use of increase preload to increase the ejection results in consequences: i. Radius, and thus afterload increases. If t ...
... a. ESV incr because of decreased ejection b. EDV decr c. Results in more favorable sarcomere lengths d. Improved force and velocity of contraction despite decr contractility e. The use of increase preload to increase the ejection results in consequences: i. Radius, and thus afterload increases. If t ...
MRI SureScan®Pacing Systems
... • ATP therapy is contraindicated in patients with an accessory antegrade pathway Warnings and Precautions Changes in patient’s disease and/or medications may alter the efficacy of the device’s programmed parameters. Patients should avoid sources of magnetic and electromagnetic radiation to avoid po ...
... • ATP therapy is contraindicated in patients with an accessory antegrade pathway Warnings and Precautions Changes in patient’s disease and/or medications may alter the efficacy of the device’s programmed parameters. Patients should avoid sources of magnetic and electromagnetic radiation to avoid po ...
View - OhioLINK Electronic Theses and Dissertations Center
... outflow tract, management of CHF, arrhythmia control, as well as the prevention and management of ATE. The most common medications used include beta adrenergic blockers, calcium channel antagonists, angiotensin converting enzyme inhibitors, venodilators, diuretics, and antiplatelet drugs. Beta block ...
... outflow tract, management of CHF, arrhythmia control, as well as the prevention and management of ATE. The most common medications used include beta adrenergic blockers, calcium channel antagonists, angiotensin converting enzyme inhibitors, venodilators, diuretics, and antiplatelet drugs. Beta block ...
Lecture 025, Cardiac - SuperPage for Joel R. Gober, PhD.
... >> Oh, but if, I don’t see heart rate in the denominator. Is directly related as well, right? So, if your heart rate increases, so does cardiac output. And if both stroke volume and heart rate increase, then, of course, cardiac output even increases more. A little bit more… >> [INDISTINCT] double? ...
... >> Oh, but if, I don’t see heart rate in the denominator. Is directly related as well, right? So, if your heart rate increases, so does cardiac output. And if both stroke volume and heart rate increase, then, of course, cardiac output even increases more. A little bit more… >> [INDISTINCT] double? ...
Dynamics of Left Ventricular Diastolic Filling During Exercise*
... The subjects performed an upright progressive cycle test to exhaustion in an air-conditioned laboratory (temperature of 20°C to 22°C) with moderate humidity. Prior to testing weight was determined without shoes using a calibrated balance beam scale, and height was measured with a stadiometer. Scapul ...
... The subjects performed an upright progressive cycle test to exhaustion in an air-conditioned laboratory (temperature of 20°C to 22°C) with moderate humidity. Prior to testing weight was determined without shoes using a calibrated balance beam scale, and height was measured with a stadiometer. Scapul ...
Dynamics of Left Ventricular Diastolic Filling
... The subjects performed an upright progressive cycle test to exhaustion in an air-conditioned laboratory (temperature of 20°C to 22°C) with moderate humidity. Prior to testing weight was determined without shoes using a calibrated balance beam scale, and height was measured with a stadiometer. Scapul ...
... The subjects performed an upright progressive cycle test to exhaustion in an air-conditioned laboratory (temperature of 20°C to 22°C) with moderate humidity. Prior to testing weight was determined without shoes using a calibrated balance beam scale, and height was measured with a stadiometer. Scapul ...
7 Adult Advanced Life Support
... 2005. Subsequent studies have shown a significantly lower hands-off-ratio with the oneshock protocol134 and some,53, 135, 136 but not all,134, 137 have suggested a significant survival benefit from this single-shock strategy. However, all studies except one137 were before-after studies and all intro ...
... 2005. Subsequent studies have shown a significantly lower hands-off-ratio with the oneshock protocol134 and some,53, 135, 136 but not all,134, 137 have suggested a significant survival benefit from this single-shock strategy. However, all studies except one137 were before-after studies and all intro ...
by Angiotensin II - Circulation Research
... nonacutely hypertensive doses of Ang II were examined in 90 rats, including those receiving an angiotensin infusion (200 ng/min i.p.) and those with renovascular hypertension, where endogenous stimulation of Ang II occurred. Myocyte injury and wound healing resulting from these treatments were evalu ...
... nonacutely hypertensive doses of Ang II were examined in 90 rats, including those receiving an angiotensin infusion (200 ng/min i.p.) and those with renovascular hypertension, where endogenous stimulation of Ang II occurred. Myocyte injury and wound healing resulting from these treatments were evalu ...
Sudden Cardiac Sudden Cardiac Death
... • HARVEY, La. -- An autopsy determined that LSU baseball player Wally Pontiff, Pontiff, found dead i his in hi parents' home h last l week, k died of natural causes and no drugs were in his system, the Jefferson Parish coroner said Monday. The autopsy found an abnormality in the heart, heart, which ...
... • HARVEY, La. -- An autopsy determined that LSU baseball player Wally Pontiff, Pontiff, found dead i his in hi parents' home h last l week, k died of natural causes and no drugs were in his system, the Jefferson Parish coroner said Monday. The autopsy found an abnormality in the heart, heart, which ...
Myxomatous degeneration ofmitral valve
... leaflets. Furthermore, differentiation of a mass from prolapse of both leaflets by angiography was difficult for two reasons: (1) a pulmonary angiogram was done rather than a left ventricular angiogram for fear of dislodging a portion of the mass. This resulted in less contrast than necessary to vis ...
... leaflets. Furthermore, differentiation of a mass from prolapse of both leaflets by angiography was difficult for two reasons: (1) a pulmonary angiogram was done rather than a left ventricular angiogram for fear of dislodging a portion of the mass. This resulted in less contrast than necessary to vis ...
Heart failure with preserved ejection fraction (HFPEF).
... HFPEF, further studies are still necessary11,12. True cardiac hypertrophy has little in common with limited myocardial infarction, and in both conditions, the underlying mechanisms that drive LV remodeling are likely to be different and, actually, they react differently to drug treatment. Recently, ...
... HFPEF, further studies are still necessary11,12. True cardiac hypertrophy has little in common with limited myocardial infarction, and in both conditions, the underlying mechanisms that drive LV remodeling are likely to be different and, actually, they react differently to drug treatment. Recently, ...
Anesthesia Seminars in Cardiothoracic and Vascular
... measurement for transducer position). The sample volume position is optimal if the signal contains a nice spectral envelope and the closing click of the prosthesis. The VTI is obtained by tracing the contour of the Doppler flow signal. Instead of the VTI, the maximum velocity may be used. VTIAo. pro ...
... measurement for transducer position). The sample volume position is optimal if the signal contains a nice spectral envelope and the closing click of the prosthesis. The VTI is obtained by tracing the contour of the Doppler flow signal. Instead of the VTI, the maximum velocity may be used. VTIAo. pro ...
The Functional Anatomy of Ventricular Contraction
... windings of linen thread. The metal markers were lined up within the lumen of a stainless steel tube fitted with a stylus by which the pins could be individually ejected from the tube. Under aseptic conditions, thoracotomy was performed on anesthetized dogs; the pericardium was incised and the small ...
... windings of linen thread. The metal markers were lined up within the lumen of a stainless steel tube fitted with a stylus by which the pins could be individually ejected from the tube. Under aseptic conditions, thoracotomy was performed on anesthetized dogs; the pericardium was incised and the small ...
cross-sectional-anatomy-lower-extremity-venous-legs
... twisted and lengthened, and generally considered to be unsightly. ...
... twisted and lengthened, and generally considered to be unsightly. ...
7 Adult Advanced Life Support
... 2005. Subsequent studies have shown a significantly lower hands-off-ratio with the oneshock protocol134 and some,53, 135, 136 but not all,134, 137 have suggested a significant survival benefit from this single-shock strategy. However, all studies except one137 were before-after studies and all intro ...
... 2005. Subsequent studies have shown a significantly lower hands-off-ratio with the oneshock protocol134 and some,53, 135, 136 but not all,134, 137 have suggested a significant survival benefit from this single-shock strategy. However, all studies except one137 were before-after studies and all intro ...
100708 Basic Dysrhythmias 2902KB Jan 14 2015 08:21:37 AM
... Ode to a Node Have a heart, and have no fear, The SA node is over here. Beating at a constant rate, 60 – 100 is really great. The AV node can make a show, If SA node has gone too slow. 40 – 60 is not too bad If it’s all you’ve got, you will be glad. Should the whole thing drop it’s speed, His and b ...
... Ode to a Node Have a heart, and have no fear, The SA node is over here. Beating at a constant rate, 60 – 100 is really great. The AV node can make a show, If SA node has gone too slow. 40 – 60 is not too bad If it’s all you’ve got, you will be glad. Should the whole thing drop it’s speed, His and b ...
2011 ACCF/AHA/HRS Focused Update on the Management of Patients With... Fibrillation (Updating the 2006 Guideline): A Report of the American...
... years to complete. Now, however, new evidence will be reviewed in an ongoing fashion to more efficiently respond to important science and treatment trends that could have a major impact on patient outcomes and quality of care. Evidence will be reviewed at least twice a year, and updates will be init ...
... years to complete. Now, however, new evidence will be reviewed in an ongoing fashion to more efficiently respond to important science and treatment trends that could have a major impact on patient outcomes and quality of care. Evidence will be reviewed at least twice a year, and updates will be init ...