AND ANSWERS GRADED A+
◉Supraventricular Tachycardia (SVT). Answer: § regular but fast
rhythm
§ rate 150-250
§ P wave merged with T wave
§ PRI variable & difficult to measure
§ QRSa typically narrow
§ Common causes: stimulants, electrolyte imbalance, hypoxia
◉Atrial Fibrillation (A-Fib). Answer: § irregular rhythm
§ absent P waves and PRI
§ QRS normal unless there are conduction delays
§ atrial "rate" fast 350- 450/ min, but ventricular rate (QRS) is
variable depending upon a fast or slow ventricular response
o Greater than 100= a fib with RVR
o Less than 100= slow
◉Atrial flutter (a-flutter). Answer: § regular or irregular rhythm
,§ Fast rate 250-350 for atrial, but ventricular rate is slower
§ P waves not present but does have saw-toothed flutter waves with
2:1 or 3:1 QRS ratio
§ PRI not measurable
§ QRSa <0.12 seconds
§ Commonly secondary to structural heart disease or infiltrative
disease (sarcoidosis/ amyloidosis), COPD
◉Idioventricular. Answer: § regular rhythm
§ rate 20-40 bpm
§ absent P waves
§ PRI not measurable
§ wide QRS with bizarre appearance
§ Typical prior to asystole
◉Junctional. Answer: § regular rhythm (irregular when PJC occurs)
§ rate 40-60 bpm (can be variable depending on underlying rhythm)
§ P wave present before but hiding after QRS
§ unmeasurable PRI
§ normal QRS
§ Common etiologies= acute MI, dig toxicity, cardiac surgery
, ◉junctional rhythm rate. Answer: 40-60 bpm
◉Junctional Bradycardia Rate. Answer: < 40 bpm
◉Accelerated Junctional Rhythm Rate. Answer: 60-100 bpm
◉Junctional Tachycardia Rate. Answer: >100 bpm
◉Ventricular tachycardia (vtach). Answer: § regular rhythm
§ rate fast 100-250bpm
§ absent P wave
§ non-measurable PRI
§ wide bizarre QRS
§ causes: complication of MI, dilated cardiomyopathy, reperfusion
phenomenon, hypoxemia, cocaine, potassium alterations, stimulants
◉Ventricular fibrillation (vfib):. Answer: § highly irregular rhythm
§ unmeasurable rate
§ absent P wave
§ unmeasurable PRI
§ no QRS
§ looks like a wavy line