Health - SynCardia
... have been dim had it not been for his transition on an artificial heart. But this astounding device is hardly the only implant giving seriously ill heart patients a second chance at life. From defibrillators to implants called LVADs, there are a variety of tiny machines that click, whirl and pump in ...
... have been dim had it not been for his transition on an artificial heart. But this astounding device is hardly the only implant giving seriously ill heart patients a second chance at life. From defibrillators to implants called LVADs, there are a variety of tiny machines that click, whirl and pump in ...
Androgenic-Anabolic Steroid (Boldenone) Abuse as a Cause of Dilated Cardiomyopathy
... Boldenone undecylenate is a testosterone analogue used in veterinary medicine as an anabolic steroid. Trade names include Equipoise, Parenabol, Equigan and Ultragan [7]. It is used to improve the growth and food conversion in food-producing animals. In most countries worldwide, this anabolic steroid ...
... Boldenone undecylenate is a testosterone analogue used in veterinary medicine as an anabolic steroid. Trade names include Equipoise, Parenabol, Equigan and Ultragan [7]. It is used to improve the growth and food conversion in food-producing animals. In most countries worldwide, this anabolic steroid ...
Index of T-wave Variation as a Predictor of Sudden Cardiac Death in
... ventricular activity, reflected on the T wave of the electrocardiogram (ECG), is commonly used to diagnose and assess SCD risk. Ventricular response during AF is highly irregular, mainly influenced by the properties of the atrioventricular (AV) node and atrial electrophysiology. Consequently, this m ...
... ventricular activity, reflected on the T wave of the electrocardiogram (ECG), is commonly used to diagnose and assess SCD risk. Ventricular response during AF is highly irregular, mainly influenced by the properties of the atrioventricular (AV) node and atrial electrophysiology. Consequently, this m ...
Tachyarrhythmias
... Impulses invade the AV node retrogradely and anterogradely, creating physiologic “interference” and block. Under the right conditions, some anterograde impulses may slip through. This phenomenon is not equivalent to third degree AV block ...
... Impulses invade the AV node retrogradely and anterogradely, creating physiologic “interference” and block. Under the right conditions, some anterograde impulses may slip through. This phenomenon is not equivalent to third degree AV block ...
Myocardial infarction after an electric shock
... after electrical shock is clinically relevant. Echocardiography can be beneficial in determining the presence of myocardial injury and its severity after electrical shock. It may reveal diffuse hypokinesia of myocardium, as well as regional hypokinesia. Echocardiographic findings may markedly improv ...
... after electrical shock is clinically relevant. Echocardiography can be beneficial in determining the presence of myocardial injury and its severity after electrical shock. It may reveal diffuse hypokinesia of myocardium, as well as regional hypokinesia. Echocardiographic findings may markedly improv ...
Chapter # 5 Irregular Heartbeats
... minute this is known as bradycardia. This may occur if you have a heart block. ...
... minute this is known as bradycardia. This may occur if you have a heart block. ...
New notes
... which reinforces the myocardium, supports the heart valves and provides electrical insulation between areas of the heart. 3. The endocardium lines the chambers of the heart and is continuous with the endothelial linings of the vascular system. D. Chambers and Associated Great Vessels (p. 662; Fig. 1 ...
... which reinforces the myocardium, supports the heart valves and provides electrical insulation between areas of the heart. 3. The endocardium lines the chambers of the heart and is continuous with the endothelial linings of the vascular system. D. Chambers and Associated Great Vessels (p. 662; Fig. 1 ...
Addendum to the Guideline on antiarrhythmics on atrial fibrillation
... If the arrhythmia terminates spontaneously, recurrent AF is designated paroxysmal; when sustained beyond 7 days, it is termed persistent. Termination with pharmacological therapy or direct-current cardioversion does not alter the designation. First-detected AF may be either paroxysmal or persistent ...
... If the arrhythmia terminates spontaneously, recurrent AF is designated paroxysmal; when sustained beyond 7 days, it is termed persistent. Termination with pharmacological therapy or direct-current cardioversion does not alter the designation. First-detected AF may be either paroxysmal or persistent ...
Cardiac MR Imaging in Mice
... constraints gradient echo based CINE imaging techniques are used. Since cardiac MRI is not a real time imaging modality data acquisition is propagated over a series of heart beats which requires synchronization with the cardiac cycle. For this purpose ECG is commonly used for cardiac gating. ECG bei ...
... constraints gradient echo based CINE imaging techniques are used. Since cardiac MRI is not a real time imaging modality data acquisition is propagated over a series of heart beats which requires synchronization with the cardiac cycle. For this purpose ECG is commonly used for cardiac gating. ECG bei ...
dysrhythmias
... he does not need emergency treatment. This is true of bradyrhythms as well as tachyrhythms. What is normal for one person may be fatal to another. 2. Documentation of dysrhythmias is extremely important. Field treatment of a dysrhythmia may be life-saving, but long-term treatment requires knowing wh ...
... he does not need emergency treatment. This is true of bradyrhythms as well as tachyrhythms. What is normal for one person may be fatal to another. 2. Documentation of dysrhythmias is extremely important. Field treatment of a dysrhythmia may be life-saving, but long-term treatment requires knowing wh ...
Sudden cardiac death and variant angina
... • without irreversible damage to the CNS and hemodynamic stability: diagnostic testing ...
... • without irreversible damage to the CNS and hemodynamic stability: diagnostic testing ...
Heart - WordPress.com
... Cardiac myocytes are autorhythmic- depolarize spontaneously at at regular time intervals Some myocytes lose the ability to contract and become specialized for generating action potentials forming the cardiac conduction system- coordinates action of all four chambers. Conduction system componen ...
... Cardiac myocytes are autorhythmic- depolarize spontaneously at at regular time intervals Some myocytes lose the ability to contract and become specialized for generating action potentials forming the cardiac conduction system- coordinates action of all four chambers. Conduction system componen ...
summary / samenVattInG Louis BW.indd 125 06-05-10 11:21
... Unfortunately, no definite cure exists. Nevertheless, in the last decade several new drugs were introduced for the treatment of PH that selectively lowers the pulmonary vascular resistance, thereby secondarily improving right heart function, resulting in significant clinical improvement. However, ev ...
... Unfortunately, no definite cure exists. Nevertheless, in the last decade several new drugs were introduced for the treatment of PH that selectively lowers the pulmonary vascular resistance, thereby secondarily improving right heart function, resulting in significant clinical improvement. However, ev ...
ANATOMY AND PHYSIOLOGY TEST: THE HEART
... Freshly oxygenated blood enters the heart through the ______________, and is pumped out what artery? _____________. A. right atrium; aorta B. left atrium; aorta C. right ventricle; pulmonary arteries D. left ventricle; pulmonary arteries Blood drains from the vena cava into the _______________ of th ...
... Freshly oxygenated blood enters the heart through the ______________, and is pumped out what artery? _____________. A. right atrium; aorta B. left atrium; aorta C. right ventricle; pulmonary arteries D. left ventricle; pulmonary arteries Blood drains from the vena cava into the _______________ of th ...
Reading the Holter ECG Report
... drawn each 5-minutes. It is called a 3D Power Graph. From left to right the frequency range is 0 to 50 Hz. The bottom 25% of the 3D shows mostly flat (low) power. And then you see lots of hills (more power) for the remaining 75%. The numbers and narrative to both sides of the 3D show that medication ...
... drawn each 5-minutes. It is called a 3D Power Graph. From left to right the frequency range is 0 to 50 Hz. The bottom 25% of the 3D shows mostly flat (low) power. And then you see lots of hills (more power) for the remaining 75%. The numbers and narrative to both sides of the 3D show that medication ...
7 - Cardiac Emergencies
... Cardiac Contraction Cycles • Atrial Excitation – This occurs when the SA node sends out an electrical impulse through the right and left atria. – This action creates the “P” wave on an EKG Rhythm. ...
... Cardiac Contraction Cycles • Atrial Excitation – This occurs when the SA node sends out an electrical impulse through the right and left atria. – This action creates the “P” wave on an EKG Rhythm. ...
Drugs for Heart Failure
... KCl - K+ tends to antagonize digitalis induced enhanced automaticity. K+ is contraindicated if higher degree of A-V block is present, because complete A-V block and ventricular asystole may be precipitated. For ventricular arrhythmias Lidocaine i.v. repeated as required is the drug of choice. Fo ...
... KCl - K+ tends to antagonize digitalis induced enhanced automaticity. K+ is contraindicated if higher degree of A-V block is present, because complete A-V block and ventricular asystole may be precipitated. For ventricular arrhythmias Lidocaine i.v. repeated as required is the drug of choice. Fo ...
Heart Failure Associate Professor Rob Doughty Dept of Medicine
... • Biventricular pacing (cardiac resynchronisation therapy, CRT) – Pace right and left ventricle (via lead in coronary sinus) – Improved cardiac output in severe HF – Improved quality of life – Improved survival ...
... • Biventricular pacing (cardiac resynchronisation therapy, CRT) – Pace right and left ventricle (via lead in coronary sinus) – Improved cardiac output in severe HF – Improved quality of life – Improved survival ...
Pediatric Cardiovascular Assessment
... Link abnormal physical exam findings to cardiovascular pathophysiology Identify a plan of care for a child with congenital heart defect ...
... Link abnormal physical exam findings to cardiovascular pathophysiology Identify a plan of care for a child with congenital heart defect ...
Blood - IS MU
... w Systole—contraction phase during which the chambers expel blood (QRS to T wave)—38% of cycle duration ...
... w Systole—contraction phase during which the chambers expel blood (QRS to T wave)—38% of cycle duration ...
Resting and Action Potential of the Heart Resting cell potential is a
... fibers, this maintains a prolonged period of depolarization, causing the plateau in the action potential. Further more the calcium ions that inter during this plateau phase activate the muscle contractile process. Immediately after the onset of the action potential, the permeability of the cardiac m ...
... fibers, this maintains a prolonged period of depolarization, causing the plateau in the action potential. Further more the calcium ions that inter during this plateau phase activate the muscle contractile process. Immediately after the onset of the action potential, the permeability of the cardiac m ...
Complete heart block in Acute Rheumatic fever
... Discussion Disturbances in cardiac conduction and rhythm are common during the acute phase of rheumatic fever. Almost 40% to 60% of patients exhibit a delay in AV conduction, which is manifested by a prolonged PR interval.2,4 Besides first-degree AV block, other disturbances encountered in acute rhe ...
... Discussion Disturbances in cardiac conduction and rhythm are common during the acute phase of rheumatic fever. Almost 40% to 60% of patients exhibit a delay in AV conduction, which is manifested by a prolonged PR interval.2,4 Besides first-degree AV block, other disturbances encountered in acute rhe ...
Cardiovascular2
... w Systole—contraction phase during which the chambers expel blood (QRS to T wave)—38% of cycle duration ...
... w Systole—contraction phase during which the chambers expel blood (QRS to T wave)—38% of cycle duration ...
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.