Ch. 13
... o Sinoatrial node (SA node): The main _________________________ It initiates action potentials and generates a higher beat frequency than AV node It makes cells in AV node go to refractory period o Backup system: Atrioventricular node (AV node); Bundle of His and Purkinje fibers Control of the H ...
... o Sinoatrial node (SA node): The main _________________________ It initiates action potentials and generates a higher beat frequency than AV node It makes cells in AV node go to refractory period o Backup system: Atrioventricular node (AV node); Bundle of His and Purkinje fibers Control of the H ...
Atropine-induced non-sustained polymorphic ventricular tachycardia
... The exact mechanism responsible for the production of ventricular irritability after atropine administration is not entirely clear. Atropine induced tachycardia leading to an increase in myocardial oxygen demand appears to be one possible explanation especially in an ischemic myocardium. The fibrill ...
... The exact mechanism responsible for the production of ventricular irritability after atropine administration is not entirely clear. Atropine induced tachycardia leading to an increase in myocardial oxygen demand appears to be one possible explanation especially in an ischemic myocardium. The fibrill ...
Sudden Cardiac Arrest Fact Sheet
... body. The lack of blood to the brain causes the person to lose consciousness quickly. If the person does not receive immediate treatment with defibrillation, brain damage and death can occur. 1 The chances of surviving SCA decrease by 7-10 percent with every minute that passes without a life-saving ...
... body. The lack of blood to the brain causes the person to lose consciousness quickly. If the person does not receive immediate treatment with defibrillation, brain damage and death can occur. 1 The chances of surviving SCA decrease by 7-10 percent with every minute that passes without a life-saving ...
Peri-operative Cardiac Arrhythmias
... Before discussing arrhythmias and their implications for the anaesthetist, it is worth revisiting a normal ECG and the myocardial conduction pathways. This will provide a point of reference to help recognise an arrhythmia and understand the origin of pathology of that arrhythmia. The normal ECG cons ...
... Before discussing arrhythmias and their implications for the anaesthetist, it is worth revisiting a normal ECG and the myocardial conduction pathways. This will provide a point of reference to help recognise an arrhythmia and understand the origin of pathology of that arrhythmia. The normal ECG cons ...
1 CARDIOLOGY FOR PRIMARY CARE Lois E Brenneman, MSN
... Cell with the fastest rate of spontaneous depolarization becomes become pacemaker for rest of heart - SA node in the normal heart (in right atrium) Other myocardial cells capable of becoming pacemaker (spontaneous depolarization) in certain circumstances (usually abnormal i.e. arrhythmias) ...
... Cell with the fastest rate of spontaneous depolarization becomes become pacemaker for rest of heart - SA node in the normal heart (in right atrium) Other myocardial cells capable of becoming pacemaker (spontaneous depolarization) in certain circumstances (usually abnormal i.e. arrhythmias) ...
PDF - Circulation: Arrhythmia and Electrophysiology
... that is, varying coupling intervals of the ectopic focus, mathematically related interectopic intervals and the presence of fusion beats.16 The original assumption of total independence (protection) of parasystolic focus from extraneous beats is no longer considered true. It is now evident that any ...
... that is, varying coupling intervals of the ectopic focus, mathematically related interectopic intervals and the presence of fusion beats.16 The original assumption of total independence (protection) of parasystolic focus from extraneous beats is no longer considered true. It is now evident that any ...
Control of heart rate An overview of how the heart
... result from changes in carbon dioxide concentration. (In solution CO2 forms an acid) ...
... result from changes in carbon dioxide concentration. (In solution CO2 forms an acid) ...
L-2 heart sounds
... or Atrial Sound • It occurs at the last one third of Diastole (just before S1) • Cause of Fourth heart sound – Due to Atrial contraction which causes rapid flow of blood from Atria to Ventricle and vibration in the blood. • Frequency: < 20 Htz Note: • Third and Fourth heart sound are low pitched sou ...
... or Atrial Sound • It occurs at the last one third of Diastole (just before S1) • Cause of Fourth heart sound – Due to Atrial contraction which causes rapid flow of blood from Atria to Ventricle and vibration in the blood. • Frequency: < 20 Htz Note: • Third and Fourth heart sound are low pitched sou ...
Afib - Ronna
... AF : Rx Beta blockers (cont.) ƒ Esmolol –rapid acting : half-life a few minutes –loading dose 500 mcg / kg over 1 min. – maintenance infusion 50 mcg / kg / min. –loading dose can be repeated after 5 min. –maintenance dose can be increased to 100 mcg /kg / min. as needed –effects dissipate within mi ...
... AF : Rx Beta blockers (cont.) ƒ Esmolol –rapid acting : half-life a few minutes –loading dose 500 mcg / kg over 1 min. – maintenance infusion 50 mcg / kg / min. –loading dose can be repeated after 5 min. –maintenance dose can be increased to 100 mcg /kg / min. as needed –effects dissipate within mi ...
The Impact of Verapamil on Catecholamine Polymorphic Ventricular
... occurrence of malignant ventricular arrhythmia in response to exercise, isoproterenol infusion or any form of adrenergically-mediated stimulation.1,3 The characteristics of CPVT include normal QT-interval and bidirectional morphology of ventricular premature ectopic beats. There were some case repor ...
... occurrence of malignant ventricular arrhythmia in response to exercise, isoproterenol infusion or any form of adrenergically-mediated stimulation.1,3 The characteristics of CPVT include normal QT-interval and bidirectional morphology of ventricular premature ectopic beats. There were some case repor ...
Intraoperative Detection of Rate Dependent Left Bundle Branch Block
... She was being medicated with calcium channel blocker and beta ...
... She was being medicated with calcium channel blocker and beta ...
Advanced Cardiac Care in the Streets Understanding EKGs
... Cardiac Cycle - represents the actual time sequence between ventricular contraction and ventricular relaxation. ...
... Cardiac Cycle - represents the actual time sequence between ventricular contraction and ventricular relaxation. ...
The effects of dobutamine-ivabradine combination and omecamtiv
... Acute diastolic failure in ischemic cardiogenic shock is associated with a grave prognosis. ...
... Acute diastolic failure in ischemic cardiogenic shock is associated with a grave prognosis. ...
Physical therapy evaluation for cardiovascular disorders
... What do we care about chest X-ray: Lubes of the lung Any presence of pleural effusion Any hypertrophy or change in size of heart ...
... What do we care about chest X-ray: Lubes of the lung Any presence of pleural effusion Any hypertrophy or change in size of heart ...
File
... respiratory cycle and up to 30% during deep respiration Premature atrial contractions: Occasional shortened intervals between one contraction and succeeding, frequently occurs in healthy people ...
... respiratory cycle and up to 30% during deep respiration Premature atrial contractions: Occasional shortened intervals between one contraction and succeeding, frequently occurs in healthy people ...
Cardiac arrhythmias and conduction
... infants whose mothers are antibody-positive develop CHB [20]. The risk of recurrence is 10 times higher in the following pregnancies [21]. CHB is usually permanent (despite steroid therapy), and can be isolated or associated with other structural heart diseases. Incomplete heart block is often rever ...
... infants whose mothers are antibody-positive develop CHB [20]. The risk of recurrence is 10 times higher in the following pregnancies [21]. CHB is usually permanent (despite steroid therapy), and can be isolated or associated with other structural heart diseases. Incomplete heart block is often rever ...
Atrial Fibrillation
... This procedure slows the ventricular rate in some people who have atrial fibrillation or flutter. If this procedure is not successful, radiofrequency ablation is used to destroy the entire atrioventricular node, completely stopping conduction from the atria to the ventricles. In such cases, a perman ...
... This procedure slows the ventricular rate in some people who have atrial fibrillation or flutter. If this procedure is not successful, radiofrequency ablation is used to destroy the entire atrioventricular node, completely stopping conduction from the atria to the ventricles. In such cases, a perman ...
3. Treatment of CHF
... Therapeutic Uses of Digitalis Glycosides Treatment of congestive heart failure ...
... Therapeutic Uses of Digitalis Glycosides Treatment of congestive heart failure ...
Cardiac implantable devices - Royal Academy of Engineering
... ventricular fibrillation and tachycardias. Ventricular fibrillation is the fast chaotic heart activity which results in no pumping activity from the heart. This can cause sudden cardiac death. Tachycardia is where the heart goes into an unnatural fast heart rate, normally classed as above 100 beats ...
... ventricular fibrillation and tachycardias. Ventricular fibrillation is the fast chaotic heart activity which results in no pumping activity from the heart. This can cause sudden cardiac death. Tachycardia is where the heart goes into an unnatural fast heart rate, normally classed as above 100 beats ...
The Heart
... • Heart is two pumps that work together, right and left half • Repetitive contraction (systole) and relaxation (diastole) of heart chambers • Blood moves through circulatory system from areas of higher to lower pressure. – Contraction of heart produces the pressure ...
... • Heart is two pumps that work together, right and left half • Repetitive contraction (systole) and relaxation (diastole) of heart chambers • Blood moves through circulatory system from areas of higher to lower pressure. – Contraction of heart produces the pressure ...
ventricular septal defect (vsd)
... A VSD is the most common type of congenital heart problem. They occur in about 2 in ...
... A VSD is the most common type of congenital heart problem. They occur in about 2 in ...
arrhythmias following cardiac surgery
... post-operative week, the remainder do so in the third to sixth post-operative week. The atrial rate varies between 250 and 375 per minute with an heart. average of 294 per minute. All patients were It is our usual practice to start quinidine during taking digitalis when atrial flutter occurred. As w ...
... post-operative week, the remainder do so in the third to sixth post-operative week. The atrial rate varies between 250 and 375 per minute with an heart. average of 294 per minute. All patients were It is our usual practice to start quinidine during taking digitalis when atrial flutter occurred. As w ...