PAUL M. ZOLL, M.D. Invasive Temporary Pacing
... in all the conditionsfor which temporarypacing has been used: in the emergency of asystolic arrestor symptomaticbradycardia;in overdrive suppressionor tennination of repetitiveventricular ectopy, tachycardia, and fibrillation; and in standby readiness during periods of increased risk of arrest. Asys ...
... in all the conditionsfor which temporarypacing has been used: in the emergency of asystolic arrestor symptomaticbradycardia;in overdrive suppressionor tennination of repetitiveventricular ectopy, tachycardia, and fibrillation; and in standby readiness during periods of increased risk of arrest. Asys ...
Participate in Work
... When is an AED used? 2. Irregular heart rhythms a. Cardiac arrhythmia is the disturbance of a normal heart rhythm. b. Ventricular fibrillation (V-Fib or VF) is an abnormal and potentially life threatening cardiac rhythm that occurs when no blood is pumped from the heart and all parts of the he ...
... When is an AED used? 2. Irregular heart rhythms a. Cardiac arrhythmia is the disturbance of a normal heart rhythm. b. Ventricular fibrillation (V-Fib or VF) is an abnormal and potentially life threatening cardiac rhythm that occurs when no blood is pumped from the heart and all parts of the he ...
Arrhythmia Surgery in Patients With and Without Congenital Heart
... to the tricuspid annulus; remaining lesions are standard for the right-sided maze procedure. These principles (Fig 1A) can be applied to all other natural and created obstacles; it is important to recognize that these principles do not apply to focal atrial tachycardias, which arise from discrete fo ...
... to the tricuspid annulus; remaining lesions are standard for the right-sided maze procedure. These principles (Fig 1A) can be applied to all other natural and created obstacles; it is important to recognize that these principles do not apply to focal atrial tachycardias, which arise from discrete fo ...
ECG-2 - Doctors2Be
... depolarization. As you recall when the ventricles depolarize (in a normal heart) the direction of current flows leftward and downward because most of the ventricular mass is in the left ventricle. We like to know the QRS axis because an abnormal axis can suggest disease such as pulmonary hypertensio ...
... depolarization. As you recall when the ventricles depolarize (in a normal heart) the direction of current flows leftward and downward because most of the ventricular mass is in the left ventricle. We like to know the QRS axis because an abnormal axis can suggest disease such as pulmonary hypertensio ...
Ventricular response during lungeing exercise in horses with lone
... propagate through the atria at a rate of approximately 300 to 500 pulses per min [2; 3]. The ...
... propagate through the atria at a rate of approximately 300 to 500 pulses per min [2; 3]. The ...
5- Normal electrocardiogram
... Because the body fluid is good conductors, algebraic sum of the action potentials of myocardial fibers can be recorded externally. The record of this potential fluctuation during cardiac cycle is called electrocardiogram (ECG). Most electrocardiograph machines record these fluctuations on moving str ...
... Because the body fluid is good conductors, algebraic sum of the action potentials of myocardial fibers can be recorded externally. The record of this potential fluctuation during cardiac cycle is called electrocardiogram (ECG). Most electrocardiograph machines record these fluctuations on moving str ...
New conduction defects and pacemaker implantation after heart
... patients during operation by implanting two atrial and two ventricular epicardial pace wires. A total of 100 patients (47.2%) experienced relative bradycardia requiring prolonged temporary pacing after transplantation during the first 24 hours of intensive care unit follow-up. Permanent pacemaker wa ...
... patients during operation by implanting two atrial and two ventricular epicardial pace wires. A total of 100 patients (47.2%) experienced relative bradycardia requiring prolonged temporary pacing after transplantation during the first 24 hours of intensive care unit follow-up. Permanent pacemaker wa ...
Atrial Fibrillation: Upstream Therapies
... evidence of symptomatic paroxysmal AF, no current antiarrhythmic therapy. – Rate control and/or anticoagulation therapy or no therapy is permitted. – Approximately 550 subjects (275 per treatment group) will be recruited ...
... evidence of symptomatic paroxysmal AF, no current antiarrhythmic therapy. – Rate control and/or anticoagulation therapy or no therapy is permitted. – Approximately 550 subjects (275 per treatment group) will be recruited ...
Chapter 15 Heart Physiology PPT
... •cardiac center regulates autonomic impulses to the heart ▪ parasympathetic impulses decrease heart action ▪ sympathetic impulses increase heart action ▪ concentration of various ions ▪ potassium and sodium decrease heart action ▪ calcium increases heart action • physical exercise increases heart ac ...
... •cardiac center regulates autonomic impulses to the heart ▪ parasympathetic impulses decrease heart action ▪ sympathetic impulses increase heart action ▪ concentration of various ions ▪ potassium and sodium decrease heart action ▪ calcium increases heart action • physical exercise increases heart ac ...
4. conclusions
... CVD accounts for 26.6% of total recorded deaths in Brazil ranking as the first place when considering only those over 50 years. In recent years, there is an increasing in patient survival because of the possibilities of early and late bypass surgery, of percutaneous coronary intervention and thrombo ...
... CVD accounts for 26.6% of total recorded deaths in Brazil ranking as the first place when considering only those over 50 years. In recent years, there is an increasing in patient survival because of the possibilities of early and late bypass surgery, of percutaneous coronary intervention and thrombo ...
BUNDLE BRANCH BLOCK
... called heart block , refers to conditions that cause an interruption to the passage of these electrical impulses, leading to heart beat abnormalities. Bundle branch blocks are fairly common conditions with about 1% of the population affected. Different pumping abnormalities emerge, depending on the ...
... called heart block , refers to conditions that cause an interruption to the passage of these electrical impulses, leading to heart beat abnormalities. Bundle branch blocks are fairly common conditions with about 1% of the population affected. Different pumping abnormalities emerge, depending on the ...
Radiofrequency ablation on veno-arterial extracorporeal life support
... Tachycardia recommenced following cannulation and continued even after an 8 mcg/kg loading dose of digoxin, esmolol 200 mcg/ kg/min and amiodarone 5 mg/kg followed by an infusion of 15 mcg/ kg/min. Direct current cardioversion on this combination of drugs restored sinus rhythm. However, tachycardia ...
... Tachycardia recommenced following cannulation and continued even after an 8 mcg/kg loading dose of digoxin, esmolol 200 mcg/ kg/min and amiodarone 5 mg/kg followed by an infusion of 15 mcg/ kg/min. Direct current cardioversion on this combination of drugs restored sinus rhythm. However, tachycardia ...
The QT interval on the ECG is measured from the beginning of the
... should be repeatable. [Remark 1] This issue is important when the heart rate is less than 50 bpm or more than 120 bpm. In addition, accurate measurement of the QT interval is important in athletes and children who have significant beat-to-beat variability of the R–R interval. In such cases, prolonge ...
... should be repeatable. [Remark 1] This issue is important when the heart rate is less than 50 bpm or more than 120 bpm. In addition, accurate measurement of the QT interval is important in athletes and children who have significant beat-to-beat variability of the R–R interval. In such cases, prolonge ...
2 nd degree AV Block, TYPE II
... until a QRS complex is dropped; P wave appears on time, but no QRS follows RR interval: irregular owing to drop beats causing the QRS complex to appear clustered together (narrow) “Grouped Beating” PP: constant ...
... until a QRS complex is dropped; P wave appears on time, but no QRS follows RR interval: irregular owing to drop beats causing the QRS complex to appear clustered together (narrow) “Grouped Beating” PP: constant ...
T The Basics of Neonatal EKG Interpretation C
... normal heart’s dominant pacemaker (Figure 6). It generally initiates the impulse wave ofdepolarization. This wave proceeds outward from the SA node, and both atria are stimulated to contract.’ The normal P wave of the cardiac impulse represents the depokuization and contraction of the atria (Figure ...
... normal heart’s dominant pacemaker (Figure 6). It generally initiates the impulse wave ofdepolarization. This wave proceeds outward from the SA node, and both atria are stimulated to contract.’ The normal P wave of the cardiac impulse represents the depokuization and contraction of the atria (Figure ...
1 1. CONTRACTILITY OF THE MYOCARDIUM The performance of
... Plot both active and passive tension against increments of muscle length. What structures in the tissue are responsible for the passive tension? Print a copy of the overlayed responses for each member of the group. Effect of stimulation frequency. When the heart is stimulated repetitively at a given ...
... Plot both active and passive tension against increments of muscle length. What structures in the tissue are responsible for the passive tension? Print a copy of the overlayed responses for each member of the group. Effect of stimulation frequency. When the heart is stimulated repetitively at a given ...
Use of Genetics in the Clinical Evaluation and Management of Cardiac Disease
... Paroxysmal nocturnal dyspnea (dyspnea caused by lung congestion, occurring suddenly at night) Reduced cardiac output Fatigue Dyspnea on exertion (shortness of breath which occurs with effort) Arrhythmias and/or conduction system disease Occasionally, some patients may have muscle weakness or d ...
... Paroxysmal nocturnal dyspnea (dyspnea caused by lung congestion, occurring suddenly at night) Reduced cardiac output Fatigue Dyspnea on exertion (shortness of breath which occurs with effort) Arrhythmias and/or conduction system disease Occasionally, some patients may have muscle weakness or d ...
Mutations affecting the formation and function of the cardiovascular
... tubes, the inner endocardium and outer myocardium (Fig. 1A,B). cloche (clo) deletes the endocardial cells. In this mutant, the myocardial layer forms in the absence of the endocardial cells but is dysmorphic: the ventricle is reduced in size and the walls of the atrium are distended. The clo heart a ...
... tubes, the inner endocardium and outer myocardium (Fig. 1A,B). cloche (clo) deletes the endocardial cells. In this mutant, the myocardial layer forms in the absence of the endocardial cells but is dysmorphic: the ventricle is reduced in size and the walls of the atrium are distended. The clo heart a ...
Silent and Malignant Early Repolarization Syndrome Mimicking
... with reciprocal changes at leads I and aVL (Figure 1B). Hyper-acute ST elevation myocardial infarction was then suspected. However, emergency coronary angiography showed an absence of significant coronary artery lesions, and laboratory data revealed that electrolytes were within normal range. Slight ...
... with reciprocal changes at leads I and aVL (Figure 1B). Hyper-acute ST elevation myocardial infarction was then suspected. However, emergency coronary angiography showed an absence of significant coronary artery lesions, and laboratory data revealed that electrolytes were within normal range. Slight ...
- South African Heart Association
... Indeed, poor outcomes and biomarkers were highlighted at the congress with more than 8 poster sessions, 2 abstract sessions and one special how-to-session on “Biomarkers ...
... Indeed, poor outcomes and biomarkers were highlighted at the congress with more than 8 poster sessions, 2 abstract sessions and one special how-to-session on “Biomarkers ...
Sudden cardiac death: prevention and treatment
... patients remain unclear. Certain ECG abnormalities can help to identify patients at increased risk for sudden cardiac death. These include the presence of atrioventricular block or intraventricular conduction defects and QT prolongation, an increase in resting heart rate to higher than 90 beats per ...
... patients remain unclear. Certain ECG abnormalities can help to identify patients at increased risk for sudden cardiac death. These include the presence of atrioventricular block or intraventricular conduction defects and QT prolongation, an increase in resting heart rate to higher than 90 beats per ...
Chapter 19 *Lecture PowerPoint The Circulatory
... • Myocardial infarction—sudden death of a patch of myocardium resulting from long-term obstruction of coronary circulation – Atheroma (blood clot or fatty deposit) often obstructs coronary arteries – Cardiac muscle downstream of the blockage dies – Heavy pressure or squeezing pain radiating into the ...
... • Myocardial infarction—sudden death of a patch of myocardium resulting from long-term obstruction of coronary circulation – Atheroma (blood clot or fatty deposit) often obstructs coronary arteries – Cardiac muscle downstream of the blockage dies – Heavy pressure or squeezing pain radiating into the ...
Correlation between Heart Rate Variability and Left Ventricular
... interval acquired for 3-5minutes. Heart Rate: heart rate at rest is known as basal heart rate. Basal heart rate of a normal healthy person is 60 beats per minute. Heart rate goes on increasing with age. Diabetic subjects are observed to have resting tachycardia causing extra load on the heart. The a ...
... interval acquired for 3-5minutes. Heart Rate: heart rate at rest is known as basal heart rate. Basal heart rate of a normal healthy person is 60 beats per minute. Heart rate goes on increasing with age. Diabetic subjects are observed to have resting tachycardia causing extra load on the heart. The a ...
Progress toward controlling in vivo fibrillating sheep
... complex systems, some research has focused on cardiac arrhythmias that are well-characterized by a low-dimension mathematical description and hence should be amenable to control. Taking this approach, Hall et al.10 demonstrated that an adaptive controller can suppress atrio-ventricular nodal conduct ...
... complex systems, some research has focused on cardiac arrhythmias that are well-characterized by a low-dimension mathematical description and hence should be amenable to control. Taking this approach, Hall et al.10 demonstrated that an adaptive controller can suppress atrio-ventricular nodal conduct ...
Anatomy and myoarchitecture of the left ventricular wall in normal
... normal hearts have reported an incidence of 55 and 62%.1,2 On echocardiography they may be mistaken for ruptured chords of the valve apparatus or vegetations. In contrast, the outlet portion of the septum is relatively smooth whereas relatively thick muscle bundles line the anterosuperior, postero-i ...
... normal hearts have reported an incidence of 55 and 62%.1,2 On echocardiography they may be mistaken for ruptured chords of the valve apparatus or vegetations. In contrast, the outlet portion of the septum is relatively smooth whereas relatively thick muscle bundles line the anterosuperior, postero-i ...