Review for CET Practice Test 100% Solved 2024

Review for CET Practice Test 100% Solved 2024 0.04 sec - Answer- Small boxes on grid - horizontal 1mm - Answer- Small boxes on grid- vertical 25mm/sec - Answer- Normal paper speed U waves - Answer- Normal, large ________ indicate decreased potassium Sinus rhythm - Answer- -P wave upright and rounded and before every QRS -narrow QRS < 0.12 sec, -rate: 60-100 -PR interval - 0.12 to 0.20 sec Somatic tremors - Answer- Can be caused by muscle movement/seizures Wandering baseline - Answer- This almost always represents the patient's respiration, but can also be caused by movement, dirty leads/electrodes and loose electrodes. An easy way to eliminate this is to move limb leads to wrists and ankles. 60 cycle interference - Answer- Electric interference caused by cell phones/non- grounded appliances/frayed wire making the baseline of the ECG appear wavy, bumpy, or tremulous; Dry electrodes may also cause this problem because of poor contact lead III - Answer- What Lead is created between left arm and left leg? Einthoven's triangle - Answer- Holter monitoring - Answer- Records EKG over 24 hours, using 5 leads; wear loose fitting clothes to reduce artifact, patient presses "event" button if they experience spontaneous symptoms, should carry on normal activities but record exercise, can't get wet, only technician can replace loose leads, tobacco products can be used up to 2 to 3 hours prior to the exam; erectile dysfunction drugs/caffeine products should be avoided for 24 hr. before the test Stress Test - Answer- Checks the patient's radial pulse; must check BP every 3 minutes; If patient is hyperventilating, check respiratory rate. Stop test when patient reaches target HR or if symptomatic. (Uses 12 lead, but RL & LL on torso to min movement) Sinus arrhythmia - Answer- Varying R-R intervals, usually with respirations (common in children) Atrial Flutter tracing - Answer- Absence of p waves, saw-tooth pattern between QRS; most commonly 2:1 Atrial Fibrillation tracing - Answer- Absence of p waves, irregularly irregular rhythm, ventricular rate of 60-100 Accelerated idioventricular rhythm - Answer- presence of wide QRS Ventricular Tachycardia tracing - Answer- Notify the physician for proper assessment and treatment Ventricular fibrillation tracing - Answer- Begin CPR and call for help; defibrillate ASAP Heart Blocks - Answer- Impaired or absent conduction between atria and ventricles: includes first degree, second degree, and third degree First degree (heart block) - Answer- Prolonged PR interval Second degree (heart block) - Answer- type I:progressive prologation of PR interval unti QRS is "dropped" type II: some p waves not followed by QRS Third degree (heart block) - Answer- Complete heart block