EKG rhythms questions and answers 100% verified

EKG rhythms questions and answers 100% verified Normal Sinus Rhythm ✔✔Has an upright P wave identical throughout strip PR interval is

EKG rhythms questions and answers 100% verified Normal Sinus Rhythm ✔✔Has an upright P wave identical throughout strip PR interval is <0.20 second QRS complexes are identical & no longer than 0.12 second ST segment is flat RR interval is regular & heart rate is 60 to 100/min PAC's ✔✔Rate: depends on the rhythem Rhythm: irregular due to premature beat p waves: appear different from underlying rythem precedes QRS complex, may be lost in T wave of previous beat. QRS complexes: of normal duration and all look alike PR intervals: normal or shortned Sinus Tachycardia ✔✔Recognized when heart rate exceeds 100/min at rest Each QRS complex is preceded by P wave Sinus Bradycardia ✔✔Heart rate is less than 60/min Each QRS is preceded by P wave PR interval & QRS complex are normal Junctional/Nodal ✔✔P wave: inverted or absent. may follow QRS complex. PR: interval (short and less than 0.12 seconds) QRS: usually 0.06-0.10 seconds QRS complexes should be normal but they can be wide or unusual looking Accelerated Junctional ✔✔Rate: 40-60 BPM rhythm: regular P waves: inverted; may appear before QRS complex QRS complexes: of normal duration and all look alike PR intervals: if present will be shorter than normal Atrial Fib ✔✔Results when atrial muscle quivers in irregular pattern; no true P waves are seen Ventricular rate may be slow & irregular Atrial Flutter ✔✔Represents rapid depolarization of atria from ectopic focus (atrial rate 250 to 350/min) Causes characteristic sawtooth pattern; numerous P waves are present for each QRS First Degree Block ✔✔PR interval exceeds 0.20 second Each QRS complex is preceded by P wave Cardiac impulse from SA node is delayed in passing through AV node or bundle of His Typically, RR intervals are regular Second Degree Block Type I (Wenckebach or Mobitz type I) ✔✔recognized when PR interval gets progressively longer until one does not pass on to ventricles Second Degree Block Type 2 (Mobitz Type 1) ✔✔Seen as series of nonconducted P waves followed by P wave that conducts to ventricles Third Degree Block ✔✔*Occurs when conduction system between atria & ventricles is completely blocked *Atria & ventricles are paced independently & there is no relationship between P waves & QRS complexes *PR intervals & RR intervals remain regular with no correlation with one another Ventricular Tachycardia ✔✔*Represent run of 3 or more PVCs in a row *Easy to recognize as series of wide QRS complexes with no preceding P wave *Ventricular rate is usually 100 to 250/min Ventricular Fib ✔✔ECG shows grossly irregular fluctuations with zigzag pattern Asystole ✔✔absence of any cardiac activity Wandering Atrial Pacmaker Rhythm ✔✔Rate: usally normal Rythem: slightly irregular P waves: change in appearance, one precedes each QRS complex. At least three different p-wave configurations are needed to diagnose wandering atrial pacemaker. QRS complex: of normal duration and all look alike PR intervals: varies Couplet ✔✔two pvcs in a row Bigeminy ✔✔every other beat is a PVC Trigeminy ✔✔every third beat is a PVC Idioventricular (agonial rhythm) ✔✔Rate: 20-40 bpm rythem: regular p waves: are not visible QRS: are wide (greater the 0.12 seconds in duration) and bizzare in apperence pr intervals: are absent PVC'S ✔✔rate: depends on underlying rythem rhythem:irregular due to premature beat p-waves: of are not visable as they are hidden in the QRS complex QRS: of PVC's are wide (greater than 0.12 seconds in duration) and bizzare in apperence PR intervals: of PVC's are absent ventricular tachicardia ✔✔three or more PVC's in a row at a ventricular rate of at least 100 beats per minute. Ventricular Quadrigeminy ✔✔PVC every 4th beat SVT ✔✔Rate: greater than 100 BPM Rhythm: regular P Waves: may not be seen or abnormal QRS: normal