The Clinical Value of Mitral A-Wave Deceleration Time in the
... who were unaware of the study protocol, with an ATLUM9 ultrasound unit, using a 2.5 MHz phased array transducer. LV filling was assessed with pulsed-wave Doppler echocardiography. Measurements were obtained with the transducer in the apical four-chamber view, and the Doppler beam aligned as perpendi ...
... who were unaware of the study protocol, with an ATLUM9 ultrasound unit, using a 2.5 MHz phased array transducer. LV filling was assessed with pulsed-wave Doppler echocardiography. Measurements were obtained with the transducer in the apical four-chamber view, and the Doppler beam aligned as perpendi ...
Final coupling paper
... important; lack of coronary perfusion leads to angina, ischemia, or even death. Increased diastolic time and augmented aortic compliance, as have been documented to occur in response to exercise training23-25, allow for improved coronary perfusion and a larger value of SEVR26. This is because coron ...
... important; lack of coronary perfusion leads to angina, ischemia, or even death. Increased diastolic time and augmented aortic compliance, as have been documented to occur in response to exercise training23-25, allow for improved coronary perfusion and a larger value of SEVR26. This is because coron ...
Acute Myocardial Infarction Complicated With Ventricular
... ischemia may protect the heart from a subsequent prolonged infarction. Several observations have proved that pre-conditioning occurs in cardiac patients, for example, during coronary angioplasty and coronary bypass graft surgery, and so it is regarded as a promising approach to reducing infarct size ...
... ischemia may protect the heart from a subsequent prolonged infarction. Several observations have proved that pre-conditioning occurs in cardiac patients, for example, during coronary angioplasty and coronary bypass graft surgery, and so it is regarded as a promising approach to reducing infarct size ...
Mechanical Dyssynchrony Precedes QRS Widening in ATPSensitive
... cardiomyopathic ventricles of the KATP channel–null mutant exposed to hemodynamic stress. Not observed in wild-type counterparts, intraventricular disparity in wall motion, validated by the degree, direction, and delay of myocardial speckle patterns, unmasked the disease substrate from asymptomatic ...
... cardiomyopathic ventricles of the KATP channel–null mutant exposed to hemodynamic stress. Not observed in wild-type counterparts, intraventricular disparity in wall motion, validated by the degree, direction, and delay of myocardial speckle patterns, unmasked the disease substrate from asymptomatic ...
Corrected Transposition of the Great Vessels without Associated
... insufficiency, complete heart block, or both. l 2 With the onset of complete heart block, congestive failure is often superimposed and may be the cause of death. Berben and Adicoffls have reported two cases of corrected transposition without associated defects who developed complete heart block in t ...
... insufficiency, complete heart block, or both. l 2 With the onset of complete heart block, congestive failure is often superimposed and may be the cause of death. Berben and Adicoffls have reported two cases of corrected transposition without associated defects who developed complete heart block in t ...
Mechanical Dyssynchrony Precedes QRS Widening in ATPSensitive
... cardiomyopathic ventricles of the KATP channel–null mutant exposed to hemodynamic stress. Not observed in wild-type counterparts, intraventricular disparity in wall motion, validated by the degree, direction, and delay of myocardial speckle patterns, unmasked the disease substrate from asymptomatic ...
... cardiomyopathic ventricles of the KATP channel–null mutant exposed to hemodynamic stress. Not observed in wild-type counterparts, intraventricular disparity in wall motion, validated by the degree, direction, and delay of myocardial speckle patterns, unmasked the disease substrate from asymptomatic ...
The Responses of Cardiac Sympathetic Nerve Activity to Changes in
... cardiac function and also in cardiovascular pathology, where for example increased levels in heart failure (HF) can promote the progression of the disease and lead to development of arrhythmias and sudden death (23). Despite these critical roles, the factors controlling CSNA in the normal state and ...
... cardiac function and also in cardiovascular pathology, where for example increased levels in heart failure (HF) can promote the progression of the disease and lead to development of arrhythmias and sudden death (23). Despite these critical roles, the factors controlling CSNA in the normal state and ...
Patent ductus arteriosus in a lamb: A case report
... Therefore, presence of PDA was suspected based on occurrence of machinery murmur. Also, there was tachycardia, increase respiratory rate and normal body temperature. No cyanotic mucus membranes and no significant hematological abnormalities were observed. Echocardiography was performed from right pa ...
... Therefore, presence of PDA was suspected based on occurrence of machinery murmur. Also, there was tachycardia, increase respiratory rate and normal body temperature. No cyanotic mucus membranes and no significant hematological abnormalities were observed. Echocardiography was performed from right pa ...
Opening and Closing Characteristics of the Aortic Valve
... Methods and Results—In 20 patients (10 with tube replacement of the aortic root, group A; and 10 with separate replacement of the sinuses of Valsalva, group B) and 10 controls (group C), transthoracic and transesophageal studies on aortic valve dynamics were performed. Three distinct phases of aorti ...
... Methods and Results—In 20 patients (10 with tube replacement of the aortic root, group A; and 10 with separate replacement of the sinuses of Valsalva, group B) and 10 controls (group C), transthoracic and transesophageal studies on aortic valve dynamics were performed. Three distinct phases of aorti ...
presentation ( format, 8MB)
... “Athletes with a probable or unequivocal clinical diagnosis of HCM should be excluded from most competitive sports, with the possible exception of those of low intensity (class IA). This recommendation is independent of age, gender, and phenotypic appearance, and does not differ for those athletes w ...
... “Athletes with a probable or unequivocal clinical diagnosis of HCM should be excluded from most competitive sports, with the possible exception of those of low intensity (class IA). This recommendation is independent of age, gender, and phenotypic appearance, and does not differ for those athletes w ...
Gross Anatomy of the Heart in the Western Grey Kangaroo
... and Valva aortae with their semilunares valvulas. The terminology given by the NAV to the cuspids and valves are according to their disposition in Macropus fuliginosus. In 1926, Grant & Regnier pointed out that in mammals, blood supply to the heart takes place through two coronary arteries, right an ...
... and Valva aortae with their semilunares valvulas. The terminology given by the NAV to the cuspids and valves are according to their disposition in Macropus fuliginosus. In 1926, Grant & Regnier pointed out that in mammals, blood supply to the heart takes place through two coronary arteries, right an ...
Print - Circulation
... measured with an electromagnetic flow probe around the ascending aorta and a high-fidelity pressure transducer in the left ventricle. A continuous-wave Doppler transducer applied to the aortic arch was used to measure peak aortic blood velocity, mean acceleration, time to peak velocity, and the syst ...
... measured with an electromagnetic flow probe around the ascending aorta and a high-fidelity pressure transducer in the left ventricle. A continuous-wave Doppler transducer applied to the aortic arch was used to measure peak aortic blood velocity, mean acceleration, time to peak velocity, and the syst ...
Heart failure with a preserved ejection fraction additive value of an
... echocardiographically within first 72 h after admission to the hospital. The protocol of the KaRen registry was approved by the human research committees of both enrolling institutions, and all patients, including the controls, and gave a written informed consent to participate in the registry and i ...
... echocardiographically within first 72 h after admission to the hospital. The protocol of the KaRen registry was approved by the human research committees of both enrolling institutions, and all patients, including the controls, and gave a written informed consent to participate in the registry and i ...
Computational modeling of acute myocardial
... demand. Myocardial infarction occurs when blood supply is interrupted and nutrient supply is compromised. During myocardial infarction, blood supply is interrupted by plaque formation in the coronary arteries (Fuster 1994) and the infarcted myocardium loses its contractile features. If the damaged r ...
... demand. Myocardial infarction occurs when blood supply is interrupted and nutrient supply is compromised. During myocardial infarction, blood supply is interrupted by plaque formation in the coronary arteries (Fuster 1994) and the infarcted myocardium loses its contractile features. If the damaged r ...
Videodensitometric ejection fraction from intravenous digital
... vein. In fact, we have found peripheral intravenous injections to be as good as if not superior to injections in the superior vena cava (15) . The ease of performance makes this type of study applicable in many clinical situations. For example , there are some data to suggest that deteriorating righ ...
... vein. In fact, we have found peripheral intravenous injections to be as good as if not superior to injections in the superior vena cava (15) . The ease of performance makes this type of study applicable in many clinical situations. For example , there are some data to suggest that deteriorating righ ...
Chapter 13-cardiac 檔案
... monitoring the electrical activity of the heart ECG recordings do not give information about mechanical problems of the heart unless those problems result from an electrical problem ...
... monitoring the electrical activity of the heart ECG recordings do not give information about mechanical problems of the heart unless those problems result from an electrical problem ...
In Situ Morphology of the Heart and Great Vessels in ~ etal
... scale. Because isolated ventricles were contracted maximally and no cavity was noticed, as shown in Figure 1, only total ventricular mass was measured. Photographs of the individual heart were numbered serially from the apex of the ventricle to the base of the heart. On each color print, the ventric ...
... scale. Because isolated ventricles were contracted maximally and no cavity was noticed, as shown in Figure 1, only total ventricular mass was measured. Photographs of the individual heart were numbered serially from the apex of the ventricle to the base of the heart. On each color print, the ventric ...
Embryonic Heart Failure in NFATc1 / Mice
... Figure 1. NFATc1⫺/⫺ embryos displayed a hallmark physiological phenotype, reversed diastolic aortic flow, that did not occur in the presence of aortic and pulmonary valves. A, Normal dorsal aortic Doppler flow waveform in a wild-type E13.5 embryo contrasted with B, representative E13.5 NFATc1⫺/⫺ Dop ...
... Figure 1. NFATc1⫺/⫺ embryos displayed a hallmark physiological phenotype, reversed diastolic aortic flow, that did not occur in the presence of aortic and pulmonary valves. A, Normal dorsal aortic Doppler flow waveform in a wild-type E13.5 embryo contrasted with B, representative E13.5 NFATc1⫺/⫺ Dop ...
Second degree AV block and severely impaired contractility in
... Keywords: Cardiac myxedema, Peri-myocarditis, Thyrocardiac axis, Hypothyroid Graves’ disease ...
... Keywords: Cardiac myxedema, Peri-myocarditis, Thyrocardiac axis, Hypothyroid Graves’ disease ...
Simulation of the Frank-Starling Law of the Heart
... adult human left atrium and left ventricle. Therefore, in the latter, in resting pressure and capacitance conditions, its volume (size, EDVV) is about 117 mL and peak “arterial” pressure is about 70 mm Hg. For reasons of simplicity, in simulations the usual terminology is used also for both valves i ...
... adult human left atrium and left ventricle. Therefore, in the latter, in resting pressure and capacitance conditions, its volume (size, EDVV) is about 117 mL and peak “arterial” pressure is about 70 mm Hg. For reasons of simplicity, in simulations the usual terminology is used also for both valves i ...
Assessment of T-Wave Alternans Used to Predict Lethal Arrhythmia
... these patients over the following 1 to 3 year • For the prediction of SCD or arrhythmic events, the sensitivity of an abnormal SAECG has been reported to vary from 30% to 76% and the specificity from 63% to 96% ...
... these patients over the following 1 to 3 year • For the prediction of SCD or arrhythmic events, the sensitivity of an abnormal SAECG has been reported to vary from 30% to 76% and the specificity from 63% to 96% ...
Pacing the Heart: The Evolution of the Pacemaker
... five years. The first patient to receive this pacemaker was a 77 years old man who had recurring syncope, or blackout episodes due to complete AV block. [7] The man actually lived for two more years after the implantation surgery and died of natural causes, proving to be the first patient whose AV b ...
... five years. The first patient to receive this pacemaker was a 77 years old man who had recurring syncope, or blackout episodes due to complete AV block. [7] The man actually lived for two more years after the implantation surgery and died of natural causes, proving to be the first patient whose AV b ...
the clinical value of chest leads
... possible to have right axis deviation in a case of preponderant enlargement of the left ventricle or left axis deviation associated with preponderant enlargement of the right ventricle. Finally, chest leads find their greatest field of usefulness in the diagnosis of myocardial infarction, and I have ...
... possible to have right axis deviation in a case of preponderant enlargement of the left ventricle or left axis deviation associated with preponderant enlargement of the right ventricle. Finally, chest leads find their greatest field of usefulness in the diagnosis of myocardial infarction, and I have ...
Echocardiographic Variables After Left Ventricular Assist Device
... Background—Operative mortality after left ventricular assist device (LVAD) implantation is heavily influenced by patient selection and the technical difficulty of surgery. However, how we treat our patients and LVAD setting may affect the patient outcome beyond this period. We postulated that the pr ...
... Background—Operative mortality after left ventricular assist device (LVAD) implantation is heavily influenced by patient selection and the technical difficulty of surgery. However, how we treat our patients and LVAD setting may affect the patient outcome beyond this period. We postulated that the pr ...
Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy (HCM) is a primary disease of the myocardium (the muscle of the heart) in which a portion of the myocardium is hypertrophied (thickened) without any obvious cause, creating functional impairment of the cardiac muscle. It is a leading cause of sudden cardiac death in young athletes.The occurrence of hypertrophic cardiomyopathy is a significant cause of sudden unexpected cardiac death in any age group and as a cause of disabling cardiac symptoms. Younger people are likely to have a more severe form of hypertrophic cardiomyopathy.HCM is frequently asymptomatic until sudden cardiac death, and for this reason some suggest routinely screening certain populations for this disease.A cardiomyopathy is a disease that affects the muscle of the heart. With HCM, the myocytes (cardiac contractile cells) in the heart increase in size, which results in the thickening of the heart muscle. In addition, the normal alignment of muscle cells is disrupted, a phenomenon known as myocardial disarray. HCM also causes disruptions of the electrical functions of the heart. HCM is most commonly due to a mutation in one of nine sarcomeric genes that results in a mutated protein in the sarcomere, the primary component of the myocyte (the muscle cell of the heart). These are predominantly single-point missense mutations in the genes for beta-myosin heavy chain (MHC), myosin-binding protein C, cardiac troponinT, or tropomyosin. These mutations cause myofibril and myocyte structural abnormalities and possible deficiencies in force generation. Not to be confused with dilated cardiomyopathy or any other cardiomyopathy.While most literature so far focuses on European, American, and Japanese populations, HCM appears in all ethnic groups. The prevalence of HCM is about 0.2% to 0.5% of the general population.