P wave Study guides, Class notes & Summaries

GCSE COMBINED SCIENCE: TRILOGY 8464/P/2H Physics Paper 2H Version: 1.0 Final *JUN238464P2H01* IB/M/Jun23/E8 8464/P/2H For Examiner’s Use Question Mark 1 2 3 4 5 6 7 TOTAL Friday 16 June 2023 Morning Time allowed: 1 hour 15 minutes Materials For this paper you must have: • a protractor • a ruler • a scientific calculator • the Physics Equations Sheet (enclosed). Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. ...

Excitability - Answer- the ability of non-pacemaker heart cells to respond to an electrical impulse that begins in pacemaker cells. Depolarization - Answer- occurs when the normally negatively charged cells within the heart muscle develop a positive charge. Conductivity - Answer- the ability to send an electrical stimulus from cell membrane to cell membrane. As a result, excitable cells depolarize in rapid succession from cell to cell until all cells have depolarized. Ex: the wave of depolarizat...

Which of the following EKG machine functions should an EKG technician use to control and regulate the height of EKG waveforms on the tracing? a. Speed b. Output display c. Artifact filter d. Gain - Answer- d. Gain Which of the following methods should a EKG technician use when removing hair from electrode placement sites for telemetry monitoring? a. Dry shave b. Wet shave c. Tape d. Clippers - Answer- d. Clippers An EKG technician notes periods of sinus arrest on a patient's EKG t...

Resting membrane potential is created by differences between the inside and outside of the cell in ion concentrations of 1. K+ 2. K+ and Ca++ 3. K+, Na+ and Cl- 4. Na+, Ca++ and Cl- - Answer- K+, Na+, and Cl- Excitation of the postsynaptic neuron is caused by the neurotransmitter 1. gamma amino butyric acid 2. glycine 3. para amino butyric acid 4. glutamate - Answer- Glutamate Wave III of the BAER is generated by the 1. superior olivary complex 2. inferior colliculus 3. la...

A patient has a transcutaneous pacemaker. Which action should the nurse implement when a pacemaker spike occurs but is not followed by ventricular complex? Assess the heart rate Increase the mA Increase the mV Assess the ECG lead placement - Answer Increase the mA A patient has a transvenous temporary pacemaker in place. Pacemaker spikes are noted on the ECG, but they are not followed by a P wave or QRS complex. Which is initially indicated? Reposition patient on the right side In...

Unit 1,2,3,4 & 5: MN 566/ MN566 (Latest 2024/ 2025 Update) Questions and Verified Answers| 100% Correct| Grade A Unit 5 Q: Which of the following medications can cause hyperlipidemia? A. High Dose Diuretics B. Exercising 30 minutes every day C. Hyperthyroidism D. Angiotensin II Receptor Blocker Answer: A. High Dose Diuretics Q: In which patient do premature ventricular contractions NOT need to be treated? A. Kelly, a 25-year-old female with an allergy to bee stings B. Mary, ...

What lab level should be checked for a possible MI? correct answer: Troponin What indicates metabolic acidosis? correct answer: Low bicarb and low pH What signs would be expected for sustained blood loss? correct answer: Hypotension and a weak, thready pulse What does the P wave indicate on a rhythm strip? correct answer: Atrial depolarization before the QRS What is a possible reason for lower extremity edema and what lab is used to diagnose? correct answer: R sided heart failur...

Normal sinus rhythm - EKG Regular Rate: 60-100 P Wave: Present, upright PR Interval: 0.12-0.20 sec QRS: <0.12 sec Sinus Bradycardia - EKG Regular Rate: <60 P Wave: Present, upright PR Interval: 0.12-0.20 sec QRS: <0.12 sec Sinus Tachycardia - EKG Regular Rate: 100-150 P Wave: Present, upright PR Interval: 0.12-0.20 sec QRS: <0.12 sec Premature Atrial Contraction - EKG IRREGULAR Rate: depends on underlying rhythm P wave: Present or hidden in T wave PR Interva...

Normal Sinus Rhythm 60-100 bpm all complexes normal and evenly spaced (P, QRS, T) Sinus Arrest - SA node doesn't fire - notice absence of P-wave for a complete cycle (a missed cycle) 00:0201:28 Sinus arrhythmia all complexes normal but rhythmically irreg - normal finding (esp in young pts) that has to do with breathing (rate: inhale-increase, exhale- decrease)

dysrhythmia aka arrhythmia - Correct answer - abnormal cardiac rhythms which can cause disturbances of: rate, rhythm, or both rate and rhythm how are dysrhythmias identified? - Correct answer Electrographic Waveform Analysis (ECG) what controls the rate and rhythm of the heartbeat? - Correct answer the heart's electrical system explain the heart's electrical system - Correct answer Each electrical signal (impulse) begins in a group of cells called the sinus node or sinoatrial (SA...