Sa node rate 60 100 bpm - Study guides, Class notes & Summaries

NYU ECG Exam Questions & Answers 2024/2025 sympathetic autonomic innervation of the heart - ANSWERSreleases epi, increases hr, CO and BP, Increased firing of the SA node Automaticity electrical heart cells - ANSWERSCells ability to spontaneously generate impulses p wave - ANSWERSatrial depolarization QRS complex - ANSWERSventricular depolarization pr interval - ANSWERStime from sa node to av node t wave - ANSWERSventricular repolarization sa node impulse rate - ANSWERS60-1...

Normal Conduction System -ANSWER -SA Node = Primary Pacemaker of the Heart, rate of 60-100 bpm -Internodal Pathways = Pathways connecting SA Node and AV Node -AV Node = Backup pacemaker, rate of 40-60 bpm -Bundle of His = splits nerve fibers down Left & Right Sides, His-Purkinje is conduction system of heart -L & R Bundle Brancehs = lead to left & right of the myocardium -Purkinje Fibers / Network = ends of the muscle, last escape pacemaker sites rate of 14-40 Tele Strip Paper -ANSWER ...

depolarization - ANS - inside of cell becomes positive, outside negative - contraction - na+ channel opens - ELECTRICAL repolarization - ANS movement of cells = inside is negative again - na+ channels close, k+ channels open - MECHANICAL p wave qrs wave t wave - ANS - (p) atrial depolarization - (qrs) ventricular depolarization - (t) ventricular repolarization refractory period - ANS per of time where cardiac cells cannot respond to stimulus absolute refractor...

3 pacemakers of the heart - 1. SA node 2. AV node 3. bundle branch intrinsic rate of SA node - 60-100 bpm intrinsic rate of AV node - 40-60 bpm intrinsic rate of bundle branches - 20-40 bpm electrical pathway through the heart - 1. normal conduction impulse originates in the *SA Node* 2. impulse travels to *AV Node* causing atrial depolarization (contraction)

normal specific gravity correct answers 1.010-1.030 polyuria correct answers 2,500 mL/24hr Oliguria correct answers <400mL/24hr Anuria correct answers <100mL/24hr Serum Creatinine (SCr) correct answers 0.6-1.2 mg/dL somewhere around 1 Normal Urea correct answers 10-20mg/dL Normal BUN correct answers 10-20 mg/dL Normal BUN:Creatinine ratio correct answers 6-25 normal BUN is 10-20 normal creatinine is 0.6-1.40 so 10-20:0.6-1.40 is the ratio I think. so either 10...

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P wave - ANSWER Depolarization of the atria PR interval - ANSWER -Normal is 0.12 to 0.2 seconds - onset of atrial depolarization until onset of ventricular polarization QRS complex - ANSWER -Normal is 0.06 to 0.11 seconds -Ventricular depolarization -systole T wave - ANSWER -appears after QRS complex - Ventricular repolarization -Spiked T-wave occurs with hyperkalemia U wave - ANSWER - repolarization of the purkinje fibers - seen in patients with hypokalemia SA node - ANSWER...

Normal Conduction System -ANSWER -SA Node = Primary Pacemaker of the Heart, rate of 60-100 bpm -Internodal Pathways = Pathways connecting SA Node and AV Node -AV Node = Backup pacemaker, rate of 40-60 bpm -Bundle of His = splits nerve fibers down Left & Right Sides, His-Purkinje is conduction system of heart -L & R Bundle Brancehs = lead to left & right of the myocardium -Purkinje Fibers / Network = ends of the muscle, last escape pacemaker sites rate of 14-40 Tele Strip Paper -ANSWER -S...

SA Node Rate 60-100 BPM AV Node Rate 40-60 BPM Bundle of His/Perkinjie Rate >40 BPM Flow of blood through the heart from the body superior and inferior vena cavas right atrium tricuspid valve right ventricle semilunar valve pulmonary artery lungs pulmonary veins left atrium bicuspid valve left ventricle semilunar valve aorta to the body Inotropic Beats Harder Chronotropic Beats Faster Dromotropic Improved contractility "P" Wave the P wave represents t...

Where are Beta 1 receptors found? - Answer Heart and Kidneys Stimulation of Beta 1 receptors result in an increase of what? - Answer Heart: Inotropy, Chronotropy, Dromotropy Kidneys: Renin-Angiotensin-Aldosterone System = Vasoconstriction = Increase blood pressure Which node is located at the junction of the superior vena cava and the right atrium, is typically supplied by the Right Coronary artery, and fires at a rate of 60-100 bpm. - Answer SA Node Atrial depolarization characterized b...