Severe left anterior descending artery stenosis
... Coronary artery anomalies are rare, occurring in 0.06%– 1.3% of patients undergoing cardiac angiography.(1,2) These anomalies are predominantly asymptomatic, but may lead to myocardial ischaemia, infarction and sudden cardiac death if the lesions are progressive. The outcome is dependent upon the or ...
... Coronary artery anomalies are rare, occurring in 0.06%– 1.3% of patients undergoing cardiac angiography.(1,2) These anomalies are predominantly asymptomatic, but may lead to myocardial ischaemia, infarction and sudden cardiac death if the lesions are progressive. The outcome is dependent upon the or ...
Transmitral Flow Changes during DipyridamoleInduced lschemia*
... was to evaluate of transmitral ...
... was to evaluate of transmitral ...
Linking left ventricular function and mural architecture: what does
... which we used a nominal diastolic epicardial diameter of 55 mm. Two series were used, one with a diastolic mural thickness of 9 mm, and one of 12 mm. The wall was divided into four zones of equal diastolic thickness, and circumferential strain and mural thickening were calculated for each zone. The ...
... which we used a nominal diastolic epicardial diameter of 55 mm. Two series were used, one with a diastolic mural thickness of 9 mm, and one of 12 mm. The wall was divided into four zones of equal diastolic thickness, and circumferential strain and mural thickening were calculated for each zone. The ...
Mitophagy and mitochondrial biogenesis in atrial tissue of patients
... mtDNA damage begs the question whether it will resolve with time, either through enzymatic repair or selective elimination of damaged genomes and expansion of intact copies. It is also unknown whether the magnitude of mtDNA damage in this setting will impact subsequent cardiac function. In a study o ...
... mtDNA damage begs the question whether it will resolve with time, either through enzymatic repair or selective elimination of damaged genomes and expansion of intact copies. It is also unknown whether the magnitude of mtDNA damage in this setting will impact subsequent cardiac function. In a study o ...
congenital heart defects and supraventricular tachycardia in
... fluoroscopic findings of congenitally malformed hearts in the 1930s. In 1938, Dr. Robert E. Gross, of the Children’s Hospital in Boston, successfully ligated the patent ductus arteriosus (PDA). This single accomplishment ushered in the era of surgery for CHDs. The specialty of pediatric cardiology h ...
... fluoroscopic findings of congenitally malformed hearts in the 1930s. In 1938, Dr. Robert E. Gross, of the Children’s Hospital in Boston, successfully ligated the patent ductus arteriosus (PDA). This single accomplishment ushered in the era of surgery for CHDs. The specialty of pediatric cardiology h ...
Cellular Physiology and Biochemistr and Biochemistry
... cardiomyocytes is that numerous measurements in cells from a single heart are feasible, whereas lack of intercellular contacts or cell surface damage by enzymatic digestion may lead to erroneous conclusions about drug actions. Heart slices combine the advantages of whole organ and isolated cells, be ...
... cardiomyocytes is that numerous measurements in cells from a single heart are feasible, whereas lack of intercellular contacts or cell surface damage by enzymatic digestion may lead to erroneous conclusions about drug actions. Heart slices combine the advantages of whole organ and isolated cells, be ...
Images and Case Reports in Arrhythmia and Electrophysiology
... that integration of 3D TEE with this transseptal technique can be applied as an alternative method of left atrial access in other situations such as deployment of the Watchman device (Boston Scientific, Marlborough, MA) or left sided ablation. Previous case reports have been published on transseptal ...
... that integration of 3D TEE with this transseptal technique can be applied as an alternative method of left atrial access in other situations such as deployment of the Watchman device (Boston Scientific, Marlborough, MA) or left sided ablation. Previous case reports have been published on transseptal ...
Heart Online First, published on December 30, 2005 as 10.1136/hrt.2005.077164
... The main goal of reperfusion therapy for acute myocardial infarction (AMI) is to restore both epicardial and microvascular blood flow to the ischemic myocardium. Primary percutaneous coronary intervention (PCI), the preferred treatment for AMI, can achieve normal epicardial coronary flow. However, s ...
... The main goal of reperfusion therapy for acute myocardial infarction (AMI) is to restore both epicardial and microvascular blood flow to the ischemic myocardium. Primary percutaneous coronary intervention (PCI), the preferred treatment for AMI, can achieve normal epicardial coronary flow. However, s ...
Ventilatory Abnormalities During Exercise in Heart Failure: A Mini
... consensus statements supporting its use [3,4]. This exercise testing technique allows for the measurement of oxygen consumption (VO2), carbon dioxide production (VCO2) and minute ventilation (VE) across time. Cardiovascular and skeletal muscle dysfunction is considered central to the often abnormal ...
... consensus statements supporting its use [3,4]. This exercise testing technique allows for the measurement of oxygen consumption (VO2), carbon dioxide production (VCO2) and minute ventilation (VE) across time. Cardiovascular and skeletal muscle dysfunction is considered central to the often abnormal ...
Continuous Positive Airway Pressure for Central Sleep Apnea and
... Eligible patients underwent clinical assessment followed by overnight polysomnography. Sleep stages and arousals, episodes of apnea and hypopnea, and the mean and lowest arterial oxygen saturation levels were assessed according to uniform methods at all centers.4,10,11 Respiratory efforts were measu ...
... Eligible patients underwent clinical assessment followed by overnight polysomnography. Sleep stages and arousals, episodes of apnea and hypopnea, and the mean and lowest arterial oxygen saturation levels were assessed according to uniform methods at all centers.4,10,11 Respiratory efforts were measu ...
Professional Rescuer CPR - Emergency Care and Safety Institute
... determining survival. The earlier defibrillation can be performed, the greater a patient’s chances of survival. After 8 to 10 minutes of cardiac arrest, damage to the heart may be so extensive that the individual can no longer survive (Figure 6.28). Although not all cardiac arrest patients will need ...
... determining survival. The earlier defibrillation can be performed, the greater a patient’s chances of survival. After 8 to 10 minutes of cardiac arrest, damage to the heart may be so extensive that the individual can no longer survive (Figure 6.28). Although not all cardiac arrest patients will need ...
Aortic Root Abscess - Journal of Clinical and Preventive Cardiology
... Aortic root abscess is a complication of aortic valve infective endocarditis. Not uncommon, this is a devastating disease associated with high morbidity and mortality. It usually occurs in immune-compromised, debilitated patients with multiple co-morbidities or in I/V drug abusers either on native o ...
... Aortic root abscess is a complication of aortic valve infective endocarditis. Not uncommon, this is a devastating disease associated with high morbidity and mortality. It usually occurs in immune-compromised, debilitated patients with multiple co-morbidities or in I/V drug abusers either on native o ...
Inherited heart conditions Hypertrophic cardiomyopathy
... develops as children grow into adults, after puberty. Hypertrophic cardiomyopathy is usually diagnosed when a heart murmur (an unusual heart sound) is detected. This can be when someone has a routine examination, perhaps for a medical check-up or for insurance reasons, rather than because they have ...
... develops as children grow into adults, after puberty. Hypertrophic cardiomyopathy is usually diagnosed when a heart murmur (an unusual heart sound) is detected. This can be when someone has a routine examination, perhaps for a medical check-up or for insurance reasons, rather than because they have ...
Left Ventricular Dysfunction Induced by Monomorphic Ventricular
... the left panel. Constant ventricular bigeminy and a run of ventricular tachycardia are evident. The enlarged tachycardia tracing (A) shows that the complexes have the same morphology as the bigeminal beats. The right panel (B) shows the morphology of the premature beats in the 12-lead ECG. ...
... the left panel. Constant ventricular bigeminy and a run of ventricular tachycardia are evident. The enlarged tachycardia tracing (A) shows that the complexes have the same morphology as the bigeminal beats. The right panel (B) shows the morphology of the premature beats in the 12-lead ECG. ...
Atrial fibrillation in pure rheumatic mitral valvular disease is
... Abstract. – Background: Some of theories try to explain the insurgence of atrial fibrillation (AF) in patients with acute articular rheumatism (AAR). These theories remind the close relation between AF and left atrium, or with valvular vitium degree, or monophasic action potential and histological c ...
... Abstract. – Background: Some of theories try to explain the insurgence of atrial fibrillation (AF) in patients with acute articular rheumatism (AAR). These theories remind the close relation between AF and left atrium, or with valvular vitium degree, or monophasic action potential and histological c ...
Indications and Evaluation for ASD Closure
... view by ICE is called the atrial view, which shows the superior rim (the rim between the aortic and the SVC rims) can be seen while rotating the probe from bicaval to short-axis view. Every effort should be made to ensure that there is no obstruction to surrounding structures such as AV valves, the ...
... view by ICE is called the atrial view, which shows the superior rim (the rim between the aortic and the SVC rims) can be seen while rotating the probe from bicaval to short-axis view. Every effort should be made to ensure that there is no obstruction to surrounding structures such as AV valves, the ...
Assessment of clients with CVS conditions
... Onset: "This began suddenly. It woke me from my sleep." Provocation/Palliation: "This pressure in my chest is constant. Nothing that I do makes it better or worse." Quality: "My chest feels very tight." Radiation/Referred: "The pressure stays in my chest. I don't hurt anywhere else." Severity: Seven ...
... Onset: "This began suddenly. It woke me from my sleep." Provocation/Palliation: "This pressure in my chest is constant. Nothing that I do makes it better or worse." Quality: "My chest feels very tight." Radiation/Referred: "The pressure stays in my chest. I don't hurt anywhere else." Severity: Seven ...
CARDIAC AND CORONARY ARTERY ANATOMY NO DISCLOSURES
... been associated with arrhythmia, unstable angina, myocardial infarction and sudden death. ...
... been associated with arrhythmia, unstable angina, myocardial infarction and sudden death. ...
Intercellular Coupling Abnormalities in the Heart: Quantification from
... have strengthened this study significantly. I would like to extend my thanks to Dr. Vigmond, for his concise and precise inputs to my research. His software alongside with his insights and comments helped me develop major parts of this study. Over the years, I have also been fortunate to share a lab ...
... have strengthened this study significantly. I would like to extend my thanks to Dr. Vigmond, for his concise and precise inputs to my research. His software alongside with his insights and comments helped me develop major parts of this study. Over the years, I have also been fortunate to share a lab ...
The cardiovascular system of mammals
... indicating that the law applies not only to mammals but also to cold-blooded animals, to unicellular organisms and, perhaps, even to more general forms of life. The rate of oxygen consumption of birds was also discussed in terms of the 3/4 power law (Lasiewski and Dawson, 1967). The emerging implica ...
... indicating that the law applies not only to mammals but also to cold-blooded animals, to unicellular organisms and, perhaps, even to more general forms of life. The rate of oxygen consumption of birds was also discussed in terms of the 3/4 power law (Lasiewski and Dawson, 1967). The emerging implica ...
mapping system - The Egyptian Cardiac Rhythm Association
... (2) location stability, defined as the distance in mm between two consecutive gated locations; (3) Morphological superpositioning of the intracardaic electrogram recorded on two consecutive beats; (4) Cycle length stability, defined as the difference between the cycle length of the last beat and the ...
... (2) location stability, defined as the distance in mm between two consecutive gated locations; (3) Morphological superpositioning of the intracardaic electrogram recorded on two consecutive beats; (4) Cycle length stability, defined as the difference between the cycle length of the last beat and the ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.