Chaos-related deterministic regulation of heart rate variability in time
... 2.2. Exercise stress test Exercise test was performed on two separate occasions. Using an ergometer bicycle with an automatic device for continues load increase of 10 W/min (Siemens-Elema, Sweden), the subjects were encouraged to continue work until stopped by fatigue or dyspnoea, in order to determ ...
... 2.2. Exercise stress test Exercise test was performed on two separate occasions. Using an ergometer bicycle with an automatic device for continues load increase of 10 W/min (Siemens-Elema, Sweden), the subjects were encouraged to continue work until stopped by fatigue or dyspnoea, in order to determ ...
Aortic fat pad and atrial fibrillation: cardiac lymphatics revisited
... observed in such patients. Intraoperative damage of cardiac lymphatics may also take place during the Fontan procedure. An important part of this procedure, transection of the MPA just above the level of the pulmonary valve (Fig. 3, B, dotted line), is almost always associated with injury of both ma ...
... observed in such patients. Intraoperative damage of cardiac lymphatics may also take place during the Fontan procedure. An important part of this procedure, transection of the MPA just above the level of the pulmonary valve (Fig. 3, B, dotted line), is almost always associated with injury of both ma ...
Heart rate modulates the slow enhancement of contraction due to
... blood of a second dog. The support dog (19–23 kg) was anesthetized with morphine hydrochloride (2 mg/kg im), chloralose (60 mg/kg iv), and urethane (600 mg/kg iv), heparinized (500 U/kg iv), and mechanically ventilated. Maintenance doses of chloralose (6 mg/kg iv) plus urethane (60 mg/kg iv) and hep ...
... blood of a second dog. The support dog (19–23 kg) was anesthetized with morphine hydrochloride (2 mg/kg im), chloralose (60 mg/kg iv), and urethane (600 mg/kg iv), heparinized (500 U/kg iv), and mechanically ventilated. Maintenance doses of chloralose (6 mg/kg iv) plus urethane (60 mg/kg iv) and hep ...
Malnutrition and Left Ventricular Systolic Function in Hospitalized
... Heart failure (HF) is a complex clinical syndrome characterized by symptoms such as dyspnoea and fatigue and evidence of cardiac systolic and/or diastolic dysfunction. It results from the inability of the heart to sufficiently supply the metabolic demands of tissues, or do so only with elevated fill ...
... Heart failure (HF) is a complex clinical syndrome characterized by symptoms such as dyspnoea and fatigue and evidence of cardiac systolic and/or diastolic dysfunction. It results from the inability of the heart to sufficiently supply the metabolic demands of tissues, or do so only with elevated fill ...
Localization of precise origin of PVC and VT : ECG anatomic
... tone which lead to decreased stimulated intracellular calcium levels. • Termination of VT by adenosine diagnostic of a cyclic adenosine monophosphate (cAMP) dependent mechanism mediated by triggered activity dependent on DAD • Prognosis is almost benign • A malignant variant : relatively early trigg ...
... tone which lead to decreased stimulated intracellular calcium levels. • Termination of VT by adenosine diagnostic of a cyclic adenosine monophosphate (cAMP) dependent mechanism mediated by triggered activity dependent on DAD • Prognosis is almost benign • A malignant variant : relatively early trigg ...
Caitlin Roscher, 20103525, 2 Ba GEN
... 3.) To help students better understand and visualize the dynamic changes in stroke volume, cardiac output, and aortic pressure that occur as a consequence of changes in the four determinants of myocardial function. II. Student Preparation for this Laboratory Exercise: It is assumed that students hav ...
... 3.) To help students better understand and visualize the dynamic changes in stroke volume, cardiac output, and aortic pressure that occur as a consequence of changes in the four determinants of myocardial function. II. Student Preparation for this Laboratory Exercise: It is assumed that students hav ...
Pressure overload alters stress-strain properties of the developing
... heart development is important because of the critical function of the organ and the potential for congenital defects. Several studies suggest that mechanical stress and strain may play an important role. A cardiac model incorporating end-diastolic sarcomere length and early-systolic stretch in feed ...
... heart development is important because of the critical function of the organ and the potential for congenital defects. Several studies suggest that mechanical stress and strain may play an important role. A cardiac model incorporating end-diastolic sarcomere length and early-systolic stretch in feed ...
Print - Circulation
... the "primary heart tube." This concept is of great assistanee in understanding the development of flow paths in the heart because it emphasizes the remarkable differenee in growth potential in various regions of the heart, and it focuses attention on the parts of the heart miost responsible for part ...
... the "primary heart tube." This concept is of great assistanee in understanding the development of flow paths in the heart because it emphasizes the remarkable differenee in growth potential in various regions of the heart, and it focuses attention on the parts of the heart miost responsible for part ...
Right Ventricular End-Diastolic Volume Combined With
... variables, mean SD for continuous variables with normal distribution, and median (interquartile range) for continuous data with skewed distribution. Chi-square test or Student independent t test were used to evaluate differences at baseline between patients with and without clinical events and to ...
... variables, mean SD for continuous variables with normal distribution, and median (interquartile range) for continuous data with skewed distribution. Chi-square test or Student independent t test were used to evaluate differences at baseline between patients with and without clinical events and to ...
Management of Atrial Fibrillation
... profound discomfort. Occasionally chest pain may be the only presentation. The AF may also be asymptomatic and as much as 25% of patients may have no symptoms.7 Such asymptomatic episodes, however, can still result in adverse atrial remodeling and increase the risk for thromboembolic stroke. There i ...
... profound discomfort. Occasionally chest pain may be the only presentation. The AF may also be asymptomatic and as much as 25% of patients may have no symptoms.7 Such asymptomatic episodes, however, can still result in adverse atrial remodeling and increase the risk for thromboembolic stroke. There i ...
Print - Circulation
... Background The present study was performed to define the mechanisms underlying spontaneously occurring ventricular arrhythmias in the failing heart. Methods and Results Three-dimensional cardiac mapping from as many as 232 intramural sites was performed in five dogs with ischemic cardiomyopathy indu ...
... Background The present study was performed to define the mechanisms underlying spontaneously occurring ventricular arrhythmias in the failing heart. Methods and Results Three-dimensional cardiac mapping from as many as 232 intramural sites was performed in five dogs with ischemic cardiomyopathy indu ...
How to best to counteract the enemies? By blocking neurohormonal activation
... associated with increased plasma levels of ET-1 and other agonists with potential pro-apoptotic actions, including TNF-alpha[21], as well as with reduced NO availability. Although at high concentrations NO may initiate apoptosis[11], at low concentrations it has been shown to inhibit apoptosis in va ...
... associated with increased plasma levels of ET-1 and other agonists with potential pro-apoptotic actions, including TNF-alpha[21], as well as with reduced NO availability. Although at high concentrations NO may initiate apoptosis[11], at low concentrations it has been shown to inhibit apoptosis in va ...
Atrial Fibrillation and Heart Failure: A Review of the
... Atrial fibrillation is also a common diagnosis, with an estimated prevalence of AF in the United States ranging from 2.7 to 6.1 million in the year 2010, with a projected increase in its prevalence.2 Population based studies based on the growing proportion of elderly individuals in the United States ...
... Atrial fibrillation is also a common diagnosis, with an estimated prevalence of AF in the United States ranging from 2.7 to 6.1 million in the year 2010, with a projected increase in its prevalence.2 Population based studies based on the growing proportion of elderly individuals in the United States ...
Diagnosis and Treatment of Sick Sinus Syndrome -
... when they are having symptoms. For this procedure to be successful, the arrhythmia must last for at least one minute. Another approach is to have patients activate a recording device to monitor the events of cardiac dysrhythmias when they are having symptoms.2 There are several other methods of diag ...
... when they are having symptoms. For this procedure to be successful, the arrhythmia must last for at least one minute. Another approach is to have patients activate a recording device to monitor the events of cardiac dysrhythmias when they are having symptoms.2 There are several other methods of diag ...
Laser catheter-induced atrioventricular nodal delays and
... In six adult mongrel dogs anesthetized with pentobarbital (Nembutal), SF leads were placed through femoral and external jugular veins and placed into the right atrium and His bundle region. Through another femoral vein, a 200 I'm optical fiber was inserted by way of a 7F catheter with a preformed cu ...
... In six adult mongrel dogs anesthetized with pentobarbital (Nembutal), SF leads were placed through femoral and external jugular veins and placed into the right atrium and His bundle region. Through another femoral vein, a 200 I'm optical fiber was inserted by way of a 7F catheter with a preformed cu ...
Complex intracardiac nervous system
... Key words: autonomic nervous system, cardiovascular diseases, heart ganglia, intracardiac nervous system, Parkinsons disease. ...
... Key words: autonomic nervous system, cardiovascular diseases, heart ganglia, intracardiac nervous system, Parkinsons disease. ...
Tissue inhibitor
... to heart failure after myocardial infarction [3–7]. Various MMPs were also found to be elevated in non-ischaemic cardiomyopathy [8–10], and MMP-1 levels are associated with an adverse prognosis in heart failure [11]. The MMPs are inhibited by tissue inhibitors of metalloproteinases (TIMPs). TIMPs pr ...
... to heart failure after myocardial infarction [3–7]. Various MMPs were also found to be elevated in non-ischaemic cardiomyopathy [8–10], and MMP-1 levels are associated with an adverse prognosis in heart failure [11]. The MMPs are inhibited by tissue inhibitors of metalloproteinases (TIMPs). TIMPs pr ...
- Austin Publishing Group
... In suspected cases of ARVC/D, ECG should always be part of the initial diagnostic approach. ECG changes are observed in about 90% of affected patients [4]. Despite the low sensitivity of ECG (40-50% in the first episode), long-term ECG monitoring showed high sensitivity and specificity. The most imp ...
... In suspected cases of ARVC/D, ECG should always be part of the initial diagnostic approach. ECG changes are observed in about 90% of affected patients [4]. Despite the low sensitivity of ECG (40-50% in the first episode), long-term ECG monitoring showed high sensitivity and specificity. The most imp ...
Ejection Fraction (EF)
... doesn't pump enough blood to the rest of the body. With treatment, many people live well with heart failure. So if you have a low EF, it is important that you recognize the signs of heart failure. They may include: fatigue, shortness of breath, and swelling in the feet. A low EF can also cause irreg ...
... doesn't pump enough blood to the rest of the body. With treatment, many people live well with heart failure. So if you have a low EF, it is important that you recognize the signs of heart failure. They may include: fatigue, shortness of breath, and swelling in the feet. A low EF can also cause irreg ...
DOC
... Definite decompensated heart failure, i.e., decompensation clearly present based on available data (satisfies criteria for decompensation). Possible decompensated heart failure, i.e., decompensation possibly but not definitively present. A typical case of “possible” rather than “definite” would be d ...
... Definite decompensated heart failure, i.e., decompensation clearly present based on available data (satisfies criteria for decompensation). Possible decompensated heart failure, i.e., decompensation possibly but not definitively present. A typical case of “possible” rather than “definite” would be d ...
J Thorac Cardiovasc Surg. 2009 Jul
... LTM for patients treated by the surgical ablation. Because the strict definition of successful treatment requires that the patient has regained an NSR rhythm and also been able to discontinue any antiarrhythmic drugs, the table also shows the numbers reaching those goals. However, it should be noted ...
... LTM for patients treated by the surgical ablation. Because the strict definition of successful treatment requires that the patient has regained an NSR rhythm and also been able to discontinue any antiarrhythmic drugs, the table also shows the numbers reaching those goals. However, it should be noted ...
EKG Basics - Phlebotomy Career Training
... The EKG reveals an atrial flutter at a rate of approx 100 per minute. The QRS complexes are narrow and reveal a physiological axis. There is evidence of a premature ventricular complex, readily identifiable in the lateral chest leads. No evidence of ischemia or infarction. No evidence of R or L bund ...
... The EKG reveals an atrial flutter at a rate of approx 100 per minute. The QRS complexes are narrow and reveal a physiological axis. There is evidence of a premature ventricular complex, readily identifiable in the lateral chest leads. No evidence of ischemia or infarction. No evidence of R or L bund ...
Heart Block Complicating Acute Inferior Wall Myocardial Infarction*
... death. In the remaining five, there was not adequate time for pacemaker insertion. Cardiac rupture was the cause of death in one additional patient, who died on the eighth day of hospitalization. In the remaining five patients, death occurred from other causes between the fifth and 35th days of hosp ...
... death. In the remaining five, there was not adequate time for pacemaker insertion. Cardiac rupture was the cause of death in one additional patient, who died on the eighth day of hospitalization. In the remaining five patients, death occurred from other causes between the fifth and 35th days of hosp ...
Stable Microreentrant Sources as a Mechanism of Atrial
... high-frequency periodic activity have recently been suggested to underlie AF in the sheep heart. Our objective was to use a combination of optical and bipolar electrode recordings to identify sites of periodic activity during AF and elucidate their mechanism. Methods and Results—AF was induced by ra ...
... high-frequency periodic activity have recently been suggested to underlie AF in the sheep heart. Our objective was to use a combination of optical and bipolar electrode recordings to identify sites of periodic activity during AF and elucidate their mechanism. Methods and Results—AF was induced by ra ...