Lecture:10 Contractility, Stroke volume and Heart Failure
... on SV. Contractility is increased in response to sympathetic stimulation and this is reflected by shifting the pressure volume-loop upward and to the left (positive inotropic effect). Changes in heart rate and rhythm also affect myocardial contractility. Measuring cardiac output using Fick’s princip ...
... on SV. Contractility is increased in response to sympathetic stimulation and this is reflected by shifting the pressure volume-loop upward and to the left (positive inotropic effect). Changes in heart rate and rhythm also affect myocardial contractility. Measuring cardiac output using Fick’s princip ...
A6 Chronic AA
... • All cause stroke rate with AF is 5% per year • AF – is an independent risk factor for stroke • ~5 fold increase in stroke risk • ~15% of all strokes caused by AF • Stroke risk increases with age • Stroke risk persists whether systematic or asymptomatic AF • A. Flutter stroke risk is not well chara ...
... • All cause stroke rate with AF is 5% per year • AF – is an independent risk factor for stroke • ~5 fold increase in stroke risk • ~15% of all strokes caused by AF • Stroke risk increases with age • Stroke risk persists whether systematic or asymptomatic AF • A. Flutter stroke risk is not well chara ...
Junctional Rhythms / A-V Nodal Rhythm
... Impulses conducted down AV – abnormal accessory pathway first. Then up through AV node itself retrogradely. Often results in broad complex with visible ‘delta wave’. ...
... Impulses conducted down AV – abnormal accessory pathway first. Then up through AV node itself retrogradely. Often results in broad complex with visible ‘delta wave’. ...
Cardiac Pathophysiology B
... • Systolic – decreased contraction leads to decreased output and poor perfusion of tissues ...
... • Systolic – decreased contraction leads to decreased output and poor perfusion of tissues ...
Arrhythmia During STEMI: Recognition and What to Do
... • Alternatives: beta-blockers >calcium channel blockers ...
... • Alternatives: beta-blockers >calcium channel blockers ...
Congestive heart failure in pediatrics age groups Congestive
... The digitalis group of drugs acts by the inhibition of Na- K ATPase which in turn leads to an increase in intracellular sodium which is exchanged for Ca by the sarcolemmal membrane resulting in better excitation-contraction coupling. Digoxin augments myocardial contractilty, reduces preload, afterlo ...
... The digitalis group of drugs acts by the inhibition of Na- K ATPase which in turn leads to an increase in intracellular sodium which is exchanged for Ca by the sarcolemmal membrane resulting in better excitation-contraction coupling. Digoxin augments myocardial contractilty, reduces preload, afterlo ...
Cardivascular Causes of Sudden Infant Death
... • Some proarrhythmic (new arrhythmia caused by antiarrhythmic drugs) antiarrhythmic drugs may also cause this complication. ...
... • Some proarrhythmic (new arrhythmia caused by antiarrhythmic drugs) antiarrhythmic drugs may also cause this complication. ...
Left ventricular assist devices as a part of heart transplant
... Heart transplantation (HTx) is the gold standard for a severe HF treatment but contraindications and lack of donors are ultimate hurdles for its widespread use. Heart replacement using durable mechanical circulatory support, dominantly continuous-flow left ventricular assist devices (LVAD), has grow ...
... Heart transplantation (HTx) is the gold standard for a severe HF treatment but contraindications and lack of donors are ultimate hurdles for its widespread use. Heart replacement using durable mechanical circulatory support, dominantly continuous-flow left ventricular assist devices (LVAD), has grow ...
The Heart Part Two
... (c) Second-degree heart block. (d) Ventricular fibrillation. These chaotic, grossly irregular ECG Some P waves are not conducted deflections are seen in acute through the AV node; hence more heart attack and electrical shock. P than QRS waves are seen. In this tracing, the ratio of P waves to QRS wa ...
... (c) Second-degree heart block. (d) Ventricular fibrillation. These chaotic, grossly irregular ECG Some P waves are not conducted deflections are seen in acute through the AV node; hence more heart attack and electrical shock. P than QRS waves are seen. In this tracing, the ratio of P waves to QRS wa ...
Systolic and diastolic heart failure: similarities and
... different heart disease has been changed. The mortality from acute myocardial infarction has significantly decreased — patients survive, but they often have the residual left ventricular dysfunction and the subsequent development of HF syndrome. Also, the overall life expectancy has become increasin ...
... different heart disease has been changed. The mortality from acute myocardial infarction has significantly decreased — patients survive, but they often have the residual left ventricular dysfunction and the subsequent development of HF syndrome. Also, the overall life expectancy has become increasin ...
Your Heart and How it works
... nails. In mild forms children may look ruddy or dusky, whereas in severe cyanosis the child may look dark blue. ...
... nails. In mild forms children may look ruddy or dusky, whereas in severe cyanosis the child may look dark blue. ...
Digitalis (cardiac glycoside) poisoning
... Fab fragments be given to patients with digitalis toxicity and any of the following: Life-threatening arrhythmia (eg, ventricular tachycardia; ventricular fibrillation; asystole; complete heart block; Mobitz II heart block; symptomatic bradycardia) Evidence of end-organ dysfunction (eg, renal fa ...
... Fab fragments be given to patients with digitalis toxicity and any of the following: Life-threatening arrhythmia (eg, ventricular tachycardia; ventricular fibrillation; asystole; complete heart block; Mobitz II heart block; symptomatic bradycardia) Evidence of end-organ dysfunction (eg, renal fa ...
Electrical signals from the heart
... right atrium in a tiny area called sinus node or Sino-atrial node (SA-node), is a collection of specialized muscle fibers with the ability to produce rhythmic electrical impulses. It is known as the pacemaker of the heart. SA node fire at regular intervals of about 70 to 80 /min; however, the rate o ...
... right atrium in a tiny area called sinus node or Sino-atrial node (SA-node), is a collection of specialized muscle fibers with the ability to produce rhythmic electrical impulses. It is known as the pacemaker of the heart. SA node fire at regular intervals of about 70 to 80 /min; however, the rate o ...
Drugs for Heart Failure
... potential when used regularly- no use in the longterm management of CHF. ...
... potential when used regularly- no use in the longterm management of CHF. ...
N155 Assessment of the Heart, Great vessels of the neck, and
... o Pulsations o Symmetry of movement o Lifts/heaves o Apical Impulse (PMI) (assess location) Locate Fifth ICS, MCL. Visualized in about 50% adults. • More visible in children and patients with thin chest walls. o Retractions o Heaves or lifts (a lifting in the cardiac area; a strong outward thrus ...
... o Pulsations o Symmetry of movement o Lifts/heaves o Apical Impulse (PMI) (assess location) Locate Fifth ICS, MCL. Visualized in about 50% adults. • More visible in children and patients with thin chest walls. o Retractions o Heaves or lifts (a lifting in the cardiac area; a strong outward thrus ...
File - Ms. Zhong`s Classes
... • It is the amount of blood pumped out by each side of the heart (actually each ventricle) in 1 minute • It is the product of heart rate (HR) and Stroke volume (SV): CO = HR X SV • Stroke volume is the volume of blood pumped out by a ventricle with each heartbeat: - In general, stroke volume increas ...
... • It is the amount of blood pumped out by each side of the heart (actually each ventricle) in 1 minute • It is the product of heart rate (HR) and Stroke volume (SV): CO = HR X SV • Stroke volume is the volume of blood pumped out by a ventricle with each heartbeat: - In general, stroke volume increas ...
File - Groby Bio Page
... fifty to sixty times a minute. The impulses that control a steady heartbeat, are blocked, delayed, or slowed down. It can occur as a result of age, AVN or SVN problems, metabolic disturbances, as a result of taking certain medications, drug abuse, or as a result of a pre-existing heart disease. Trai ...
... fifty to sixty times a minute. The impulses that control a steady heartbeat, are blocked, delayed, or slowed down. It can occur as a result of age, AVN or SVN problems, metabolic disturbances, as a result of taking certain medications, drug abuse, or as a result of a pre-existing heart disease. Trai ...
Powerpoint
... Romano-Ward (RW) syndrome resulting from autosomal-dominant heterozygous mutations, nomenclature is considered historical because of low average QTc penetrance of ≈60%;148 mechanism-based classification by protein dysfunction is preferable.¶LQTS- and CPVT1causing mutations probably account for ≈10% ...
... Romano-Ward (RW) syndrome resulting from autosomal-dominant heterozygous mutations, nomenclature is considered historical because of low average QTc penetrance of ≈60%;148 mechanism-based classification by protein dysfunction is preferable.¶LQTS- and CPVT1causing mutations probably account for ≈10% ...
Cardiac Dysrhythimia and Code Management
... 2. A surgical patient on a general nursing unit has just been successfully defibrillated with the use of an AED by the nursing staff. He is being manually ventilated with a BVD. Identify the current nursing priorities and their rationales. The code team still needs to respond and assume responsibili ...
... 2. A surgical patient on a general nursing unit has just been successfully defibrillated with the use of an AED by the nursing staff. He is being manually ventilated with a BVD. Identify the current nursing priorities and their rationales. The code team still needs to respond and assume responsibili ...
Ventricular Tachycardia
... What Causes Ventricular Tachycardia? Your heart rate is controlled by electrical signals transmitted across the heart muscle. When something goes wrong and signals are sent too rapidly, tachycardia can occur. Most often, ventricular tachycardia is caused by other heart problems such as coronary arte ...
... What Causes Ventricular Tachycardia? Your heart rate is controlled by electrical signals transmitted across the heart muscle. When something goes wrong and signals are sent too rapidly, tachycardia can occur. Most often, ventricular tachycardia is caused by other heart problems such as coronary arte ...
The Heart Part Two
... (c) Second-degree heart block. (d) Ventricular fibrillation. These chaotic, grossly irregular ECG Some P waves are not conducted deflections are seen in acute through the AV node; hence more heart attack and electrical shock. P than QRS waves are seen. In this tracing, the ratio of P waves to QRS wa ...
... (c) Second-degree heart block. (d) Ventricular fibrillation. These chaotic, grossly irregular ECG Some P waves are not conducted deflections are seen in acute through the AV node; hence more heart attack and electrical shock. P than QRS waves are seen. In this tracing, the ratio of P waves to QRS wa ...
Pharmacology 9a – Drugs of the Heart
... Given intravenously to terminate superventricular tachyarrhythmias (SVT). Its actions are short-lived (20-30s) and it is consequently safer than verapamil. Mode of Action It acts of A1 (adenosine) receptors on the cardiac muscle tissue causing them to hyperpolarise and therefore slow the conduction ...
... Given intravenously to terminate superventricular tachyarrhythmias (SVT). Its actions are short-lived (20-30s) and it is consequently safer than verapamil. Mode of Action It acts of A1 (adenosine) receptors on the cardiac muscle tissue causing them to hyperpolarise and therefore slow the conduction ...
Unit One: Introduction to Physiology: The Cell and General Physiology
... • Aortic Stenosis and Aortic Regurgitation--the net stroke volume is reduced (stenosis: ventricle fails to empty and in regurgitation: blood flows backward into the ventricle a. Compensation by: 1. Hypertrophy of the left ventricle 2. Increase in blood volume b. Eventual failure of the left ventricl ...
... • Aortic Stenosis and Aortic Regurgitation--the net stroke volume is reduced (stenosis: ventricle fails to empty and in regurgitation: blood flows backward into the ventricle a. Compensation by: 1. Hypertrophy of the left ventricle 2. Increase in blood volume b. Eventual failure of the left ventricl ...