Heart As A Pump And Cardiac Cycle Mechanical events :
... The duration of one cardiac cycle is approximately 0.8 second, making a heart rate of 75 beats/minute, (we use these values for studying purposes, but they actually vary according to the heart rate which ranges between 60 – 100 beats/minute in normal cases). The mechanical events that happen during ...
... The duration of one cardiac cycle is approximately 0.8 second, making a heart rate of 75 beats/minute, (we use these values for studying purposes, but they actually vary according to the heart rate which ranges between 60 – 100 beats/minute in normal cases). The mechanical events that happen during ...
Arrhythmogenic Right Ventricular
... of QRS complex in leads V 1 –V 3 (Fig. 1). They are uncommonly seen in newly diagnosed patients with ARVC, but are a major diagnostic criterion. The usual differential diagnosis in patients suspected of ARVC who have PVCs or monomorphic VT arising from the RVOT is that of idiopathic VT. It is import ...
... of QRS complex in leads V 1 –V 3 (Fig. 1). They are uncommonly seen in newly diagnosed patients with ARVC, but are a major diagnostic criterion. The usual differential diagnosis in patients suspected of ARVC who have PVCs or monomorphic VT arising from the RVOT is that of idiopathic VT. It is import ...
Transposition of the great arteries associated with a - Heart
... great arteries has variously been defined as a reversal of the anteroposterior relation of the semilunar valves (Goor and Edwards, 1973), any alteration in the position of the great arteries (Abbot, 1927), and the presence of mitral-aortic valve discontinuity as a result of a subaortic conus (Van Pr ...
... great arteries has variously been defined as a reversal of the anteroposterior relation of the semilunar valves (Goor and Edwards, 1973), any alteration in the position of the great arteries (Abbot, 1927), and the presence of mitral-aortic valve discontinuity as a result of a subaortic conus (Van Pr ...
ARRHYTHMIAS in Adult Congenital Heart Disease
... Stanford Hospital and Clinics Palo Alto, California INTRODUCTION Symptomatic arrhythmias occur with increasing frequency for adult congenital heart disease (ACHD) as they move through adolescence and into adulthood. Arrhythmias are associated with increased hospital admissions resulting in significa ...
... Stanford Hospital and Clinics Palo Alto, California INTRODUCTION Symptomatic arrhythmias occur with increasing frequency for adult congenital heart disease (ACHD) as they move through adolescence and into adulthood. Arrhythmias are associated with increased hospital admissions resulting in significa ...
Cardiovascular Complications
... 1) Pulmonary stenosis Not usually progressive 2) Aortic stenosis rare; its outcome is bad 3) Marfan’s syndrome (genetic disorder) Myxomatous degeneration of the heart valves; mitral and cystic medial necrosis(囊性中层 坏死) of the aorta (aneurysms动脉瘤) death rate: 4%-50% ...
... 1) Pulmonary stenosis Not usually progressive 2) Aortic stenosis rare; its outcome is bad 3) Marfan’s syndrome (genetic disorder) Myxomatous degeneration of the heart valves; mitral and cystic medial necrosis(囊性中层 坏死) of the aorta (aneurysms动脉瘤) death rate: 4%-50% ...
Summer 2013
... not being managed by medication and an ablation was recommended. The ablation took 3 hours and in the end the doctor tapped me on the shoulder and said one section was ablated. He proceeded to inform me that I didn’t have RVOT, instead I had ARVC and I needed an ICD. It has been one year since being ...
... not being managed by medication and an ablation was recommended. The ablation took 3 hours and in the end the doctor tapped me on the shoulder and said one section was ablated. He proceeded to inform me that I didn’t have RVOT, instead I had ARVC and I needed an ICD. It has been one year since being ...
CONGENITAL HEART DEFECTS AND ASSOCIATED GENETIC DISORDERS The
... The complexity of cardiac embryology suggests that multiple genes are involved in directing development of the heart. Mutations in control and structural genes appear to result in the great variety of congenital malformations of the heart. ...
... The complexity of cardiac embryology suggests that multiple genes are involved in directing development of the heart. Mutations in control and structural genes appear to result in the great variety of congenital malformations of the heart. ...
new strategies for treatment of serious
... of clinical risk, clinical signs, and clinical management, high grade second degree AV block is managed in the same fashion as third degree AV block. With both arrhythmias, the QRS-T complexes may originate from ventricular or junctional tissue. Typically, these cardiac rhythms are due to primary pa ...
... of clinical risk, clinical signs, and clinical management, high grade second degree AV block is managed in the same fashion as third degree AV block. With both arrhythmias, the QRS-T complexes may originate from ventricular or junctional tissue. Typically, these cardiac rhythms are due to primary pa ...
Transposition of the Great Arteries (D-TGA)
... Surgical options are determined based on individual anatomy. Please see Rastelli Procedure, Arterial Switch Operation, and Nikaidoh Procedure. Your child’s cardiologist will discuss surgical options and timing with you. Life-long cardiology follow up is necessary. Following arterial switch operation ...
... Surgical options are determined based on individual anatomy. Please see Rastelli Procedure, Arterial Switch Operation, and Nikaidoh Procedure. Your child’s cardiologist will discuss surgical options and timing with you. Life-long cardiology follow up is necessary. Following arterial switch operation ...
Chapter 19: The Heart
... Long absolute refractory period prevents summation and tetanus, promotes pumping. (E) Electrocardiogram = ECG Electrical currents generated in heart spread to skin. -1- P Wave: atrial depolarization -2- QRS Complex: ventricular depolarization. -3- T Wave: ventricular repolarization. IV. Blood Flow, ...
... Long absolute refractory period prevents summation and tetanus, promotes pumping. (E) Electrocardiogram = ECG Electrical currents generated in heart spread to skin. -1- P Wave: atrial depolarization -2- QRS Complex: ventricular depolarization. -3- T Wave: ventricular repolarization. IV. Blood Flow, ...
H5 THE TRANSPORT SYSTEM
... increases in 0.1s. The pressure remains high for the next 0.2s and the volume of the ventricle goes from 100% to almost 0%. During diastole, the ventricle also fills up with blood so its volume increases. The pressure remains low until atrial systole forces blood into the ventricle which also sharpl ...
... increases in 0.1s. The pressure remains high for the next 0.2s and the volume of the ventricle goes from 100% to almost 0%. During diastole, the ventricle also fills up with blood so its volume increases. The pressure remains low until atrial systole forces blood into the ventricle which also sharpl ...
3/10/2009 1 4. The two inferior chambers of the heart are known as
... (AV) node, Bundle of His, bundle branches, and Purkinje fibers. 6.Pulmonary circuit oxygen poor blood is pumped from the right side the heart to the lungs. Systemic circuit – the left side of the heart pumps oxygen rich blood out to the ...
... (AV) node, Bundle of His, bundle branches, and Purkinje fibers. 6.Pulmonary circuit oxygen poor blood is pumped from the right side the heart to the lungs. Systemic circuit – the left side of the heart pumps oxygen rich blood out to the ...
Chapter 7 Body Systems - Silver Cross Emergency Medical Services
... A dysrhythmia intermediary between VT and VF A type of polymorphic VT associated with a prolonged QT interval French for “twisting of the points” QRS changes shape, amplitude, and width Appears to “twist” around the isoelectric line, resembling a spindle ...
... A dysrhythmia intermediary between VT and VF A type of polymorphic VT associated with a prolonged QT interval French for “twisting of the points” QRS changes shape, amplitude, and width Appears to “twist” around the isoelectric line, resembling a spindle ...
Unit K Notes #1 Heart Structure Fill In - Mr. Lesiuk
... - Left: Collects blood from ___________________________________ Left and Right ____________________– _________________ -____________: Sends blood __________________ via the ____________________ --> Pulmonary arteries. -___________: More muscular wall because more force must be exerted to send blood ...
... - Left: Collects blood from ___________________________________ Left and Right ____________________– _________________ -____________: Sends blood __________________ via the ____________________ --> Pulmonary arteries. -___________: More muscular wall because more force must be exerted to send blood ...
Arrhythmogenic Right Ventricular Dysplasia
... CMR imaging is a valuable diagnostic tool in the evaluation of ARVD. Not commonly performed in all patients with suspicion of ARVD, especially if other tests have led to definite diagnosis of ARVD. However, when other means are non-diagnostic, CMR should be performed. It identifies global and region ...
... CMR imaging is a valuable diagnostic tool in the evaluation of ARVD. Not commonly performed in all patients with suspicion of ARVD, especially if other tests have led to definite diagnosis of ARVD. However, when other means are non-diagnostic, CMR should be performed. It identifies global and region ...
Heartbeat
... • Contraction phase is called systole • Relaxation phase is called diastole • Average adult at rest completes 75 cardiac cycles per minute or 0.8 seconds per cycle ...
... • Contraction phase is called systole • Relaxation phase is called diastole • Average adult at rest completes 75 cardiac cycles per minute or 0.8 seconds per cycle ...
Irregular Heart Beats/Palpitations
... References: 1. Choi G, Kopplin LJ, Tester DJ, et al. Spectrum and frequency of cardiac channel defects in swimming-triggered arrhythmia syndromes. Circulation. 2004;110:2119-2124. 2. Priori SG, Napolitano C, Memmi M, et al. Clinical and molecular characterization of patients with catecholaminergic p ...
... References: 1. Choi G, Kopplin LJ, Tester DJ, et al. Spectrum and frequency of cardiac channel defects in swimming-triggered arrhythmia syndromes. Circulation. 2004;110:2119-2124. 2. Priori SG, Napolitano C, Memmi M, et al. Clinical and molecular characterization of patients with catecholaminergic p ...
Signal-Averaged Electrocardiography
... and colleagues (2001) conducted a meta-analysis to examine the utility of various tests for risk stratification. The analysis included 44 studies that evaluated the accuracy of signal-averaged electrocardiography, heart rate variability, severe ventricular arrhythmia on ambulatory electrocardiograph ...
... and colleagues (2001) conducted a meta-analysis to examine the utility of various tests for risk stratification. The analysis included 44 studies that evaluated the accuracy of signal-averaged electrocardiography, heart rate variability, severe ventricular arrhythmia on ambulatory electrocardiograph ...
The Cardiovascular System: Part 1
... 1) Describe the structures of the heart that are responsible for regulating the movement of blood from one chamber to the next. 2) The pathway by which action potentials from the sinoatrial node travel through the heart is important for the normal function of the heart. Describe the conduction pathw ...
... 1) Describe the structures of the heart that are responsible for regulating the movement of blood from one chamber to the next. 2) The pathway by which action potentials from the sinoatrial node travel through the heart is important for the normal function of the heart. Describe the conduction pathw ...
Clinical Approach & Management Of CHF
... Act on both arteriolar & venous beds ACE inhibitors, nitroprusside & prazosin ACEIs have additional beneficial effects on cardiac structure & function that may be independent of their effect on afterload ...
... Act on both arteriolar & venous beds ACE inhibitors, nitroprusside & prazosin ACEIs have additional beneficial effects on cardiac structure & function that may be independent of their effect on afterload ...
High grade B-cell lymphoma causing severe right heart failure
... for management of heart failure. She was in cardiogenic shock associated with multi-organ dysfunction. TTE was suboptimal but suggested the presence of an intraventricular thrombus, and the patient was scheduled for surgery. A central venous pressure (CVP) line was placed before anesthetic induction ...
... for management of heart failure. She was in cardiogenic shock associated with multi-organ dysfunction. TTE was suboptimal but suggested the presence of an intraventricular thrombus, and the patient was scheduled for surgery. A central venous pressure (CVP) line was placed before anesthetic induction ...
Ventricular Septal Defect-Moderate to Large
... A ventricular septal defect is the most common congenital heart defect. A congenital defect means that it is present at birth. This type of defect is a hole in the wall (septum) between the right and left ventricles. This hole allows blood to flow across from the left side, where the pressure is hig ...
... A ventricular septal defect is the most common congenital heart defect. A congenital defect means that it is present at birth. This type of defect is a hole in the wall (septum) between the right and left ventricles. This hole allows blood to flow across from the left side, where the pressure is hig ...
Tachycardia-Induced Cardiomyopathy
... How common is it? Tachycardia-induced cardiomyopathy can occur at any age. The incidence of tachycardia-induced cardiomyopathy is unknown. In selected studies of patients with atrial fibrillation, approximately 25% to 50% of those with LV dysfunction had some degree of tachycardiainduced cardiomyopa ...
... How common is it? Tachycardia-induced cardiomyopathy can occur at any age. The incidence of tachycardia-induced cardiomyopathy is unknown. In selected studies of patients with atrial fibrillation, approximately 25% to 50% of those with LV dysfunction had some degree of tachycardiainduced cardiomyopa ...
Arrhythmogenic right ventricular dysplasia
Arrhythmogenic right ventricular dysplasia (ARVD), also called arrhythmogenic right ventricular cardiomyopathy (ARVC) or arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C), is an inherited heart disease.ARVD is caused by genetic defects of the parts of heart muscle (also called myocardium or cardiac muscle) known as desmosomes, areas on the surface of heart muscle cells which link the cells together. The desmosomes are composed of several proteins, and many of those proteins can have harmful mutations.The disease is a type of nonischemic cardiomyopathy that involves primarily the right ventricle. It is characterized by hypokinetic areas involving the free wall of the right ventricle, with fibrofatty replacement of the right ventricular myocardium, with associated arrhythmias originating in the right ventricle.ARVD can be found in association with diffuse palmoplantar keratoderma, and woolly hair, in a autosomal recessive condition called Naxos disease, because this genetic abnormality can affect also the integrity of the superficial layers of the skin most exposed to pressure stress.ARVC/D is an important cause of ventricular arrhythmias in children and young adults. It is seen predominantly in males, and 30-50% of cases have a familial distribution.