Duration of qt interval Study guides, Class notes & Summaries

UCLA EKG Test Questions And Answers, All Verified 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 QT interval normal duration 0.36-0.44 Normal Sinus Rhythm (N...

Conduction System SA Node AV Node Bundle of His Right and Left bundle branches Purkinje Fibers SA Node primary pacemaker rate 60-100 Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen AV Node slightly delays impulse from atria to ventricles Bundle of His conducts impulses to left and right bundle branches Purkinje Fibers relay impulses to ventricular myocardium Depolarization ...

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

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...

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...

BKAT ICU Post Test Exam 2023 With 100% Correct Answers. Nitroprusside purpose - correct answer decreases preload and afterload by vasodilation (mainly afterload) Dobutamine mechanism of action - correct answer contractility Dopamine at a low-end dose "renal dose" - correct answer 0.5-4mcg/kg/min increases renal and mesentric perfusion Dopamine at a mid-range dose - correct answer 4-10mcg/kg/min increases contractility and heart rate Dopamine at a high-range dose - correct answer greate...

Exam 1: NSG223/ NSG 223 (New 2024/ 2025 Update) Med Surg 2 Exam| Questions and Verified Answers| 100% Correct| Graded A- Herzing QUESTION What is the PR Interval The PR interval is measured from the beginning of the P wave to the beginning of the QRS complex. It represents the time needed for sinus node stimulation, atrial depolarization, and conduction through the AV node before ventricular depolarization QUESTION What is the ST Segment Answer: The ST segment, w...

CPHON Exam 93 Questions with Verified Answers G1 - CORRECT ANSWER The first gap, or growth phase, of the cell cycle, consisting of the portion of interphase before DNA synthesis begins. Cell grows larger and produces ribosome and proteins. S - CORRECT ANSWER All 46 chromosomes are replicated in the cells nucleus G2 - CORRECT ANSWER The second gap, or growth phase, of the cell cycle, consisting of the portion of interphase after DNA synthesis occurs. DNA is condensed into rod form . (...

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 CORRECT ANSWER 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 bec...

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 - Answer 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...