Echelon quiz questions

Echelon quiz questions When the sympathetic nerve fibers are stimulated, the heart rate is ____________. Ans- elevated Electrode location sites should be rotated _______________ or when the pt is sweaty or has had a bath. Ans- q24h What method is used to calculate atrial and ventricular rate for irregular rhythms? Ans- 6 second rule T or F: The qrs complex in MCL1 can be negative and still be normal. Ans- T A wave form is a movement ______________ the isoelectric line in either a positive or negative direction. Ans- away from Lead II is helpful in detecting.... Ans- sinus node and atrial arrhythmias What affects preload: volume in the veins, pressure in the arteries or ventricles, or volume of blood in the ventricles? Ans- volume in the veins Along with Lead II, lead III is most helpful in monitoring changes in what part of the heart? Ans- Inferior wall MI What are the best areas to place electrodes? Ans- on soft tissue The ekg produces an upright pattern on the paper in response to electrical activity in the heart flowing towards a Ans- positive electrode The QT interval represents Ans- total ventricular activity What are the AV valves? Ans- mitral and tricuspid What part of the EKG reflects the refractory period? Ans- The QRS to the peak of the T wave 5 large EKG strip boxes totals how much time? Ans- 1 second The PRI is considered abnormal or prolonged if it is Ans- 0.20 secs What is the most common cause for an alarm sounding? Ans- a loose lead wire Which lead is the most useful for routine monitoring and monitoring the sinus node? Ans- Lead II Which lead is helpful in monitoring atrial rhythms and hemiblocks? Ans- Lead I What is the normal measurement of a QRS complex? Ans- 0.04-0.10 What are EKG artifacts? Ans- false cardiac waveforms What is the first step in preparing a pt for an EKG? Ans- reassuring the pt and maintaining privacy What are the factors that impact afterload? Ans- arterial contractility, pressure, and resistance What is released when the parasympathetic nerve fibers are stimulated? Ans- acetylcholine Which lead is helpful in assessing bundle branch defects and confirming pacemaker wire placement? Ans- MCL1 Normal Sinus rhythm has a HR of Ans- 60-100 Afib, Aflutter, and ____________ are examples of SVT Ans- junctional tachycardia What rhythm shows a normal rate, normal QRS and PRI durations, and an absent beat or beats? Anssinus pause What wave might not be visible if the pt presents w/ sinus tachycardia? Ans- t wave In sinus arrhythmia, which interval remains regular Ans- PRI What is the most common type of rhythm in SVT? Ans- paroxysmal SVT You would not see a normal _______________ interval on an EKG strip with SVT. Ans- PR When you have a regular atrial and ventricular rhythm and a normal QRS and PRI and the atrial and ventricular rate is between 100-150 bpm, this rhythm would be ID'd as Ans- sinus tachycardia What is the appropriate tx for a stable pt with afib and a controlled ventricular response? Ans- admin anticoagulants and antiarrhythmics What is the heart's electrical activity dominated by? Ans- the sa node In sinus bradycardia, the atrial and ventricular rate is Ans- 40-60 bpm A pt is ID'd as having an uncontrolled ventricular rate when aflutter is accompanied by a ventricular rate ________________ Ans- 100 What rhythm is initiated by the SA node and transmitted through the atria, AV junction, bundle branches, and purkinje fibers? Ans- Sinus Sinus tachycardia is defined as sinus rhythm at a rate of Ans- 100-150 bpm When atropine is ineffective for sinus bradycardia, what would be your next intervention? Anstranscutaneous pacing