Single-breathhold, four-dimensional, quantitative assessment of LV
... techniques require ill, dyspneic patients to undertake multiple, prolonged breathholds in the exact same diaphragmatic position. They also collect and assemble data over multiple cardiac cycles, causing image degradation during arrhythmias. In addition, the process of complete volumetric imaging of ...
... techniques require ill, dyspneic patients to undertake multiple, prolonged breathholds in the exact same diaphragmatic position. They also collect and assemble data over multiple cardiac cycles, causing image degradation during arrhythmias. In addition, the process of complete volumetric imaging of ...
- AORN Journal
... ventricular tachycardia (Figure 2) are the most common initial rhythms after cardiac arrest. Immediate defibrillation is the recommended therapy for these dysrhythmias because the chance for successful defibrillation declines over time.13,15 When ventricular fibrillation is present, the heart is qui ...
... ventricular tachycardia (Figure 2) are the most common initial rhythms after cardiac arrest. Immediate defibrillation is the recommended therapy for these dysrhythmias because the chance for successful defibrillation declines over time.13,15 When ventricular fibrillation is present, the heart is qui ...
Double heart rupture after acute myocardial infarction: A
... presence of blood clot, although it is not enough for a complete diagnosis without direct view of the rupture. This emphasizes the need for better education and best echo machines in intensive care units for better and faster diagnosis of acute myocardial infarction complications. VSR as a mechanica ...
... presence of blood clot, although it is not enough for a complete diagnosis without direct view of the rupture. This emphasizes the need for better education and best echo machines in intensive care units for better and faster diagnosis of acute myocardial infarction complications. VSR as a mechanica ...
Relationship between 24- hour Holter variables, chest discomfort
... syncope and Holter variables. The latter finding could indicate that 24-hour Holter monitoring may not be an ideal or first hand choice for evaluation of syncope in a non emergent, outpatient setting. Furthermore, some of the the 24-hour heart rate profiles appear to be similar between subjects with ...
... syncope and Holter variables. The latter finding could indicate that 24-hour Holter monitoring may not be an ideal or first hand choice for evaluation of syncope in a non emergent, outpatient setting. Furthermore, some of the the 24-hour heart rate profiles appear to be similar between subjects with ...
326-1468-2-SP - International Cardiovascular Forum Journal
... was successful, persistent hypotension and mortality were less compared to patients in whom PCI was unsuccessful. (14) Our study showed no statistically significant difference between groups regarding demographic data and risk factors. In this study the BP recordings in the acute stage were signific ...
... was successful, persistent hypotension and mortality were less compared to patients in whom PCI was unsuccessful. (14) Our study showed no statistically significant difference between groups regarding demographic data and risk factors. In this study the BP recordings in the acute stage were signific ...
Right ventricular function
... using a bi-plane angiographic method to measure RV volume combined with micromanometertipped pressure catheter recordings (23). Figure 2b shows a typical example. Compared with the normal left ventricle, ejection from the right ventricle occurs early during pressure rise (with an abbreviated period ...
... using a bi-plane angiographic method to measure RV volume combined with micromanometertipped pressure catheter recordings (23). Figure 2b shows a typical example. Compared with the normal left ventricle, ejection from the right ventricle occurs early during pressure rise (with an abbreviated period ...
Shape and Volume Changes During "Isovolumetric Relaxation" in
... catheter from the aortic valve toward the ventricular apex was also detectable at this time, and it was usually possible to perceive a simultaneous change in direction of flow of contrast material within the ventricle. The phenomenon of PIR was readily observed during the routine projection of the c ...
... catheter from the aortic valve toward the ventricular apex was also detectable at this time, and it was usually possible to perceive a simultaneous change in direction of flow of contrast material within the ventricle. The phenomenon of PIR was readily observed during the routine projection of the c ...
Effects of digitalis on the normal and the failing heart
... exercise in subjects without heart failure (20), but its cardiac stimulating action is reflected in the finding that the same levels of cardiac output and stroke work are delivered from a lower ventricular filling pressure or during a shorter period of time, or both. Several other lines of evidence ...
... exercise in subjects without heart failure (20), but its cardiac stimulating action is reflected in the finding that the same levels of cardiac output and stroke work are delivered from a lower ventricular filling pressure or during a shorter period of time, or both. Several other lines of evidence ...
Mechanisms of Cardiac Arrhythmias (PDF Available)
... can reactivate the L-type calcium channels [26], resulting in increased ICa,L that further depolarizes the membrane. This sets up a positive feedback loop, triggering an action potential. Secondly, at membrane potentials negative to the threshold of ICa,L activation (but before full repolarization), ...
... can reactivate the L-type calcium channels [26], resulting in increased ICa,L that further depolarizes the membrane. This sets up a positive feedback loop, triggering an action potential. Secondly, at membrane potentials negative to the threshold of ICa,L activation (but before full repolarization), ...
Characteristics and outcome among patients having out of
... arrest elsewhere. In many ways individuals who had an arrest at home had characteristics that forecasted a poor outcome. These included an older age,21 22 a lower occurrence of bystander CPR,2 3 a lower occurrence of a witnessed cardiac arrest,1 and a longer interval between collapse and the arrival ...
... arrest elsewhere. In many ways individuals who had an arrest at home had characteristics that forecasted a poor outcome. These included an older age,21 22 a lower occurrence of bystander CPR,2 3 a lower occurrence of a witnessed cardiac arrest,1 and a longer interval between collapse and the arrival ...
Free PDF - European Review for Medical and
... of neurohormonal factors, which has become a target of pharmacologic inhibition, correlates with the severity of HF. Each of these events is associated with loss of myocardial Ca2+ homeostasis. Defective intracellular Ca2+ homeostasis causes contractile dysfunction and arrhythmias in failing myocard ...
... of neurohormonal factors, which has become a target of pharmacologic inhibition, correlates with the severity of HF. Each of these events is associated with loss of myocardial Ca2+ homeostasis. Defective intracellular Ca2+ homeostasis causes contractile dysfunction and arrhythmias in failing myocard ...
ARVD Review Rhythm 2.. - Tehran Arrhythmia Center
... ventricular tachycardias with left bundle branch block pattern or sudden death. The disease often is familial with an autosomal inheritance. The typical hallmarks of ARVD/C are distributed in the so-called “triangle of dysplasia.” The functional and morphologic characteristics are relevant to clinic ...
... ventricular tachycardias with left bundle branch block pattern or sudden death. The disease often is familial with an autosomal inheritance. The typical hallmarks of ARVD/C are distributed in the so-called “triangle of dysplasia.” The functional and morphologic characteristics are relevant to clinic ...
AED Frequently Asked Questions (FAQ`s)
... Sudden cardiac arrest cases are usually due to abnormal heart rhythms called arrhythmias, the vast majority of which are ventricular fibrillation. Ventricular fibrillation is a condition in which the heart's electrical impulses suddenly become chaotic, causing the heart to cease pumping blood effect ...
... Sudden cardiac arrest cases are usually due to abnormal heart rhythms called arrhythmias, the vast majority of which are ventricular fibrillation. Ventricular fibrillation is a condition in which the heart's electrical impulses suddenly become chaotic, causing the heart to cease pumping blood effect ...
Metformin enhances left ventricular function in patients with
... and, assigning a value for α of 0.01, with a power of 90%, a sample size of six patients per group (controls and those medicated with metformin). Anticipating some losses in the follow-up, we randomly selected 20 subjects per group, of any gender, aged 35 to 60 years. All patients received the same ...
... and, assigning a value for α of 0.01, with a power of 90%, a sample size of six patients per group (controls and those medicated with metformin). Anticipating some losses in the follow-up, we randomly selected 20 subjects per group, of any gender, aged 35 to 60 years. All patients received the same ...
Cardioversion of acute atrial fibrillation in the emergency department
... In all patients presenting to the emergency department with acute AF, immediate provision of supplementary oxygen, establishment of an intravenous line, continuous electrocardiographic monitoring, blood pressure and 12 lead ECG is mandatory. In the emergency department assessment of AF (Table 8): It ...
... In all patients presenting to the emergency department with acute AF, immediate provision of supplementary oxygen, establishment of an intravenous line, continuous electrocardiographic monitoring, blood pressure and 12 lead ECG is mandatory. In the emergency department assessment of AF (Table 8): It ...
The clinical and etiological profile of atrial fibrillation after
... recommended. While these medications reduce this risk, they increase rates of major bleeding. Atrial fibrillation is the most common serious abnormal heart rhythm.2 In Europe and North America, as of 2014, it affects about 2% to 3% of the population. This is an increase from 0.4 to 1% of the populat ...
... recommended. While these medications reduce this risk, they increase rates of major bleeding. Atrial fibrillation is the most common serious abnormal heart rhythm.2 In Europe and North America, as of 2014, it affects about 2% to 3% of the population. This is an increase from 0.4 to 1% of the populat ...
Jorgensen J1010 manual march 07.indd
... another technician if it will alleviate stress. Some dogs will tolerate the procedure much better if standing on the floor rather than being placed on a table. Use of sedatives or tranquilizers is not advisable for diagnostic recordings. If used, ...
... another technician if it will alleviate stress. Some dogs will tolerate the procedure much better if standing on the floor rather than being placed on a table. Use of sedatives or tranquilizers is not advisable for diagnostic recordings. If used, ...
Use of automated external defibrillators for children: an update. An
... cardial damage may begin to occur with doses as low as /10 J/kg [11 /14]. In addition, further animal data suggested that doses of 0.5 /10 J/kg were generally adequate for defibrillation in a variety of species [11]. Gutgesell and colleagues [15] conducted the largest clinical study of an effecti ...
... cardial damage may begin to occur with doses as low as /10 J/kg [11 /14]. In addition, further animal data suggested that doses of 0.5 /10 J/kg were generally adequate for defibrillation in a variety of species [11]. Gutgesell and colleagues [15] conducted the largest clinical study of an effecti ...
Heart rate modulates the slow enhancement of contraction due to
... that allowed a stable level of diastolic pressure and a positive pressure without artifacts during contraction. The deflated volume was associated with a negative diastolic pressure in all cases. In each study, left ventricular pressure was recorded while the balloon was at the deflated volume and a ...
... that allowed a stable level of diastolic pressure and a positive pressure without artifacts during contraction. The deflated volume was associated with a negative diastolic pressure in all cases. In each study, left ventricular pressure was recorded while the balloon was at the deflated volume and a ...
DIASTOLIC DYSFUNCTION IN DIABETES MELLITUS
... represent the reversible first stage of diabetic cardiomyopathy2, reinforcing the importance of early examination of diastolic ventricular function in individuals with diabetes. The risk of heart failure is increased even in diabetic patients with no clinical evidence of coronary artery disease. Myo ...
... represent the reversible first stage of diabetic cardiomyopathy2, reinforcing the importance of early examination of diastolic ventricular function in individuals with diabetes. The risk of heart failure is increased even in diabetic patients with no clinical evidence of coronary artery disease. Myo ...
Mother Rotors and the Mechanisms of D600-Induced
... Background—Two types of ventricular fibrillation (VF) have been demonstrated in isolated rabbit hearts during D600 infusion. Type 1 VF is characterized by the presence of multiple, wandering wavelets, whereas type 2 VF shows local spatiotemporal periodicity. We hypothesized that a single mother roto ...
... Background—Two types of ventricular fibrillation (VF) have been demonstrated in isolated rabbit hearts during D600 infusion. Type 1 VF is characterized by the presence of multiple, wandering wavelets, whereas type 2 VF shows local spatiotemporal periodicity. We hypothesized that a single mother roto ...
Late Ventricular Potentials in Cardiac and Extracardiac
... Certain conditions must be met by the area that provides LVPs. First, conduction must be slow enough to enable reentry in the healthy tissue. Second, a 1/1 conduction should be mentained at high frequencies; otherwise a bidirectional block appears and reentry is imposible. Third, an unidirectional b ...
... Certain conditions must be met by the area that provides LVPs. First, conduction must be slow enough to enable reentry in the healthy tissue. Second, a 1/1 conduction should be mentained at high frequencies; otherwise a bidirectional block appears and reentry is imposible. Third, an unidirectional b ...
Tissue Mitral Annular Displacement—A Novel Descriptor of Global
... A recent survey of patients admitted to the New York area hospitals with heart failure and a normal EF showed that left ventricular hypertrophy was present in over 80% of such patients.3 Our laboratory has devoted much attention to the study of LV systolic function in hypertensive heart disease, val ...
... A recent survey of patients admitted to the New York area hospitals with heart failure and a normal EF showed that left ventricular hypertrophy was present in over 80% of such patients.3 Our laboratory has devoted much attention to the study of LV systolic function in hypertensive heart disease, val ...
Is Myocardial Recovery Possible and How Do You Measure It?
... in the face of normal and/or perturbed hemodynamic loading conditions [9••]. Thus, although reversal of the heart failure phenotype at the cellular (myocyte) and molecular levels is likely necessary for the initiation of myocardial recovery and is responsible for the restoration of normal LV size an ...
... in the face of normal and/or perturbed hemodynamic loading conditions [9••]. Thus, although reversal of the heart failure phenotype at the cellular (myocyte) and molecular levels is likely necessary for the initiation of myocardial recovery and is responsible for the restoration of normal LV size an ...
Ventricular fibrillation
Ventricular fibrillation (V-fib or VF) is a condition in which there is uncoordinated contraction of the cardiac muscle of the ventricles in the heart, making them quiver rather than contract properly. Ventricular fibrillation is the most commonly identified arrhythmia in cardiac arrest patients. While there is some activity, the lay person is usually unable to detect it by palpating (feeling) the major pulse points of the carotid and femoral arteries. Such an arrhythmia is only confirmed by electrocardiography. Ventricular fibrillation is a medical emergency that requires prompt Advanced Life Support interventions. If this arrhythmia continues for more than a few seconds, it will likely degenerate further into asystole (""flatline""). This condition results in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) will result in a matter of minutes. If the patient is not revived after a sufficient period (within roughly 5 minutes at room temperature), the patient could sustain irreversible brain damage and possibly become brain-dead, due to the effects of cerebral hypoxia. On the other hand, death often occurs if sinus rhythm is not restored within 90 seconds of the onset of VF, especially if it has degenerated further into asystole.