Duration of qt interval - Study guides, Class notes & Summaries

Pt on Vtach, HR 135, RR 32, BP 90/48, conscious but c/o dizziness, recent K+ lvl is 3.4. What action would you do first? a. emergent defib b. amio 300mg IVP c. emergent cardioversion d. hang 10 mEq KCL/50mL D5W - ️️C The nurse notes the following when analyzing a patient's telemetry strip: HR, 65/min and regular; PR interval, 0.22 seconds; QRS complex, 0.10 seconds; QTc, 0.52 seconds. Which of the following dysrhythmias is the patient at risk for? A. Atrial fibrillation because th...

NURS 3000 FINAL EXAM QUESTIONS AND ANSWERS UPDATED (VERIFIED) What are the normal serum sodium levels? - ANSWER 135-145 mmol/L What are the normal serum potassium levels? - ANSWER 3.5-5 mmol/L what is normal glucose levels? - ANSWER 4-7 What is the normal pH of blood? - ANSWER 7.35-7.45 what is the normal PaCO2 value? - ANSWER 35-45 PaO2 normal range - ANSWER 75-100 mmHg What is the normal HCO3 value? - ANSWER 22-26 what is the normal level of hematocrit? - ANSWER Men- 41%-50% Women- 36...

Pt on Vtach, HR 135, RR 32, BP 90/48, conscious but c/o dizziness, recent K+ lvl is 3.4. What action would you do first? a. emergent defib b. amio 300mg IVP c. emergent cardioversion d. hang 10 mEq KCL/50mL D5W - Accurate AnswerC The nurse notes the following when analyzing a patient's telemetry strip: HR, 65/min and regular; PR interval, 0.22 seconds; QRS complex, 0.10 seconds; QTc, 0.52 seconds. Which of the following dysrhythmias is the patient at risk for? A. Atrial fibrillation b...

Pt on Vtach, HR 135, RR 32, BP 90/48, conscious but c/o dizziness, recent K+ lvl is 3.4. What action would you do first? a. emergent defib b. amio 300mg IVP c. emergent cardioversion d. hang 10 mEq KCL/50mL D5W - C The nurse notes the following when analyzing a patient's telemetry strip: HR, 65/min and regular; PR interval, 0.22 seconds; QRS complex, 0.10 seconds; QTc, 0.52 seconds. Which of the following dysrhythmias is the patient at risk for? A. Atrial fibrillation because the PR in...

P wave: PR interval: QRS complex: (ST segment) T wave: QT interval: correct answers • P wave - atrial depolarization and contraction • PR interval - time of travel from the SA node to AV node (.12-.2) • QRS - ventricular depolarization and contraction (.08-.12) - Note: Atrial repolarization occurs during this time, but cannot be seen on EKG • T wave - ventricular repolarization • QT interval - start of ventricular contraction to end of relaxation Systematic Approach to ana...

78 year old who is hemodynamically unstable with altered level of consciousness ventricular hear rate- 50 PR interval- 0.20 QRS duration- 0.08 QT interval- 0.40 - Answer-sinus bradycardia Sinus Bradycardia nursing interventions - Answer-Vitals Attach AED Obtain EKG Notify MD Atropine (0.5 mg adult) Transcutaneous pacing 67 year old patient who is hemodynamically unstable with a weak, thready pulse, feeling "lightheaded" ventricular hear rate- 150 PR interval- n/a QRS duration- n/...

_________defined as conjunction with initial deflection >500msec - Answer-Slow rolling eye movements _____is the most powerful zeitgeber and regulates the circadian system. - Answer-light ____measured from trough to trough - Answer-duration A bipolar derivation utilizes which of the following? a. One electrode that overlies an electrically active area b. Two electrodes that overlie an electrically active area c. One electrode over an active and one over an inactive area d. Two electrod...

Which of the EKG findings is most likely indicative of Acute Myocardial Infarction (AMI) in a patient presenting with acute chest pain? A. Wide and bizarre QRS complexes in the EKG B. ST segment changes (STEMI or NSTEMI) in the EKG C. A saw-toothed pattern in the EKG saw-toothed pattern in the EKG D. Flat line in the EKG - Answer- B. ST segment changes (STEMI or NSTEMI) in the EKG To determine whether there is a delay in impulse conduction through the atria, the nurse will measure the len...

UCLA EKG Test Questions And Correct Answer AV node rate 40-60 bpm SA node rate 60-100 bpm Purkinje fibers rate 20-40 bpm PR interval is from _ to _? beginning of P wave to beginning of Q wave QRS interval is from _ to _? beginning of Q to end of S QT interval is from _ to _? beginning of Q to end of T PR interval normal duration 0.12-0.20 s QRS normal duration 0.04-0.12 s

Electrocardiogram (ECG) correct answer: Since you can't see the heart beating we use a ECG to provide a picture that replicates the actual cardiac issue. Myocardial Infraction (MI) correct answer: Heart Attack -Have abnormal rhythms. -Death of cardiac muscle due to ischemia Doe the ECG machine monitor or control the hearts rhythm? correct answer: Only monitors Straight line when machine is turned on but not connected to the patient correct answer: Isoelectric = no current ...