Sa node pace - Study guides, Class notes & Summaries

Basic Dysrhythmias Part I & II Questions & Answers A+ 1 / 29 Pacemakers of the Heart P wave AV node conduction AV Valves QRS complex Sinoatrial (SA) node Atrioventricular (AV) node Bundle of His Bundle Branches Purkinje Fibers -SA node: p wave -SA node to AV node: PR segment -Impulse travels from Bundle of His to Bundle branches and then to Purkinje fibers: QRS complex -Repolarization of ventricles: T wave sinoatrial node (SA node) starts an im￾pulse, as the wave of depolari...

Electrophysiology - ACCURATE ANSWERS 1. Automaticity - ability to create electrical impulse spontaneously - every cell contains 2. Excitability - ability to respond to outside stimulus - ready to transmit/contract 3. Conductivity - receive impulse, conduct to nearby cells 4. Contractility - ability to shorten, or contract Polarization - ACCURATE ANSWERS alive and ready for signal - inta/extra cellular ions aligned Depolarization - ACCURATE ANSWERS ions shift, creating wave as it ...

NURA 2500 CARDIO TEST QUESTIONS AND ANSWERS What are the symptoms of an AV block? - Answer--fainting/syncope -heart failure -cardiac arrest and death -hypotension This is the mildest form of the heart blocks and is rarely symptomatic. There are very few times this rhythm will receive treatment. - Answer-first degree heart block In first degree heart block the electrical signals from the atria to the ventricles are - Answer-delayed, causing long PR intervals In a first degree heart ...

What are the 6 parts of the cardiac conduction cycle? correct answer: -SA node -Internodal pathways -AV node -Bundle of His -R and L bundle branches -Purkinje fibers What is the SA node? correct answer: -Small cluster of cells located in the upper R atrium *-Pacemaker of the heart* What are internodal pathways? correct answer: Impulses sent by the SA node that travel through the atrial muscle fibers via the intra-atrial pathways Allows for simultaneous depolarization and contra...

Critical Care Exam 1 Questions and Answers 100% Pass P wave - Correct Answer ️️ -Depolarization of the atria PR interval - Correct Answer ️️ --Normal is 0.12 to 0.2 seconds - onset of atrial depolarization until onset of ventricular polarization QRS complex - Correct Answer ️️ --Normal is 0.06 to 0.11 seconds -Ventricular depolarization -systole T wave - Correct Answer ️️ --appears after QRS complex - Ventricular repolarization -Spiked T-wave occurs with hyperkalemia U...

BIO 392 Exam 3 | Questions with Verified Answers Left ventricular pressure is higher than pressure in the aorta during A. ventricular systole only. B. atrial systole and ventricular systole C. ventricular diastole only. D. atrial systole only. E. All of the answers are correct. During ventricular systole, blood is entering the ventricles. A. the atria are contracting. B. the AV valves are closed. C. the ventricles are relaxed. D. the pressure in the ventricles declines. Which blood vessels re...

Nitroprusside purpose - Answer- decreases preload and afterload by vasodilation (mainly afterload) Dobutamine mechanism of action - Answer- contractility Dopamine at a low-end dose "renal dose" - Answer- 0.5-4mcg/kg/min increases renal and mesentric perfusion Dopamine at a mid-range dose - Answer- 4-10mcg/kg/min increases contractility and heart rate Dopamine at a high-range dose - Answer- greater than 10mcg/kg/min vasoconstriction and increases BP Dopamine and Levophed inf...

What are the 3 R's of EKG correct answers Rhythm Rate Regularity How long is the strip that you need to look at correct answers six seconds What is the normal heart pacemaker correct answers SA node Where is SA node correct answers high in the right atrium Where is the AV node correct answers low in the right atrium What is electricle conduction pathway correct answers SA AV BUndle of His Bundle Branches Purkinje BUndle branch composition correct answers Right and left b...

DPT-772: ECG LECTURE EXAM QUESTIONS AND ANSWERS VERIFIED LATEST UPDATE SOLUTIONS VERIFIED how much fluid is in the parietal pericardial space 10-20 mL of fluid in the cavity what is endocarditis inflammation of inner lining, can lead to bad consequences L main coronary artery has more branches than the R since the L side of the heart if more muscular where does deoxygenated myocardium blood return to deoxygenated blood from myocardium goes back to R atrium via coronary veins what happe...

Sinus Arrhythmia - ️️Rate: increases on inspiration, decreases on expiration Rhythm: *Always has irregular rhythm* P waves?: yes PR interval: normal QRS: normal Significance: usually a normal finding and usually is *not treated* Sinus Tachycardia - ️️Rate is >100/min (usually below 160) Rhythm is regular P wave present PR interval: normal 0.12-0.20 QRS complex:normal 0.6-0.10 Interpretation: correct the underlying cause, adminster beta blockers or calcium channel blockers....