R waves irregular - Study guides, Class notes & Summaries

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...

The ECG of a client with a single-chamber atrial pacemaker should display o :## a pacemaker spike before the P wave. On an electrocardiogram (ECG), o :## the P wave represents atrial depolarization and the QRS complex represents ventricular depolarization. The ECG of a client with a singlechamber atrial pacemaker should display a pacemaker spike before the P wave. occurs when a blood clot becomes lodged in a vein. Clinical manifestations include unilateral edema, localized pain, tende...

Along what axis is time measured in an EKG paper? - Answer-across a horizontal axis What does each small square on an EKG strip represent? - Answer-1 mm in length 0.04 seconds What does each large square on an EKG strip represent? - Answer-5 mm in length 0.2 seconds How can a regular rhythm be calculated on an EKG strip? - Answer-when the rhythm is regular, the heart rate is 250 divided by the number of large squares between the QRS complexes I.e. 3 large squares between regular Q...

Which of the following is a dysrhythmia that arises from the SA node? a. Wandering atrial pacemaker b. Sinus arrest c. Junctional escape d. Ventricular tachycardia o :## b Key characteristics of sinus rhythms are: a. Upright and wide QRS complexes b. Normal P waves c. PRI within normal duration of 0.12-0.20 seconds and varying with each beat d. Both b and c o :## b During normal heart activity, the ______ is the primary pacemaker. a. Bundle of His b. SA node c. AV node d. AV junc...

NEU NRSG 3420 EKG EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED RATED 100% PASS Atrial Fibrillation "irregularly irregular" -R-R is widened -No effective atrial contraction -Erratic p-waves and QRS waves Ventricular rate usually 120-200 bpm -apical and radial pulse deficit (slower radial) -20-25% LOSS OF ATRIAL KICK -risk of stroke, CVA TX: Warfarin, may give b-blocker for decreased CO and Dig for severe = cardio version Atrial Flutter -Saw tooth shape -rapid, ...

CASAL II OA Exam Questions with All Correct Answers SA node - Answer-pacemaker, 60-100bpm,Depolarization R atria, p wave, AV node - Answer-Gatekeeper, intraseptal, Allows delay for blood so no back up, 40-60 bpm Bundle of His - Answer-Intraventricular, 40-60bpm, sends to purkinje fibers for ventricular depolarization L and R bundle branches - Answer-20-40bpm, Purkinje fibers - Answer-20-40bpm, ventricular depolarization (QRS) complex Preload - Answer-LVEDP determined by LVEDV ...

NURS 480 Week 2 Test 1 Study Guide 2024 A+ Graded. Nurs 480: Week 2, Test 1 Study Guide 1. Characteristics of V- Fib and Vtach VFIB • no pulse • not breathing • HR is not measurable • Rhythm is irregular and chaotic • The P wave is not visible and the P-R interval and the QRS interval are not measurable VTach • Rate: 150-250 beats/minute • can have a pulse or may not o FIRST THING TO DO: CHECK FOR A PULSE o if no pulse get the defib right away (PICK DEFIB RATHER THAN C...

What does each square of an ECG represent? 0.20 seconds. inside the box is smaller boxes that are 0.04 seconds of time. P wave first electrical signal saw. the atria is squeezing after receiving a signal from the SA node. The atrial kick is 20-30% of cardiac output. Loss of atrial kick will affect bp and pump performance Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Brainpower Read More PR Interval SA (atrial) node dro...

Normal Sinus Characteristics o :## Regular Rhythm with a rate between 60-100, a P wave before each QRS complex, PR interval <0.20, QRS <0.12 Sinus Bradycardia Characteristics o :## Regular Rhythm with a rate <60, a P wave before each QRS complex, PR interval <0.20, QRS < 0.12 Sinus Tachycardia Characteristics o :## Regular rhythm with a rate >100, a P wave before each QRS complex, PR interval <0.20, QRS < 0.12 Sinus Arrhythmia Characteristics o :## Irregular ...

Cardiac- Telemetry Exam Questions and Answers 100% Verified along what axis is time measured in an EKG paper? - Answer-across a horizontal axis what does each small square on an EKG strip represent? - Answer-1 mm in length 0.04 seconds what does each large square on an EKG strip represent? - Answer-5 mm in length 0.2 seconds how can a regular rhythm be calculated on an EKG strip? - Answer-when the rhythm is regular, the heart rate is 250 divided by the number of large squares between the...