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### 17 Cards in this Set

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 horizontal time small square equals0.04 large square .020 one min equals 300 large boxes 1500 small boxes vertical boxes equal voltage 2 large boxes equals 1 mv what is systamatic anaylisis general observation is there a p-wave b4 evrey qrs segment' are there any extra beats early beats rythmn regular or irregular after genearal observation determine hr pri interval\qrs interval 3 ways to determine heart rate count large boxes between r waves divide by 300 count number of r waves in a 6 sec strip multiply by 10 count small number of boxes between r waves divide by 1500 pri interval between beginning of b wave to beginning of q qrs complex space between q and the start of t wave normal range of pri interval ..12-.20 sec normal range for qrs interval .o4-.10 sec if pri is above normal range means a heart block 2 types of heart block 1 st degree or av block p wave gradually prelonged (wenckebach) 2nd degree p wave prelonged and qrs drops (morep waves than qrs waves if qrs is above normal range meand there is a bbb 2 types if rabbit ears are present equals rt heart block any other above normal qrs range equals left bundle branch block normal sinus rhythm hr-60-100 regularity regular wave form p wave for evrey qrs pr intervla .12-.20 qrs interval .04 to .10 sinus bradycardia hr below 60 r to r regular pri interval .12-.20 qrs interval .04 to .10 wave form p wave for evrey qrswave sinus tachycardia hr 100 to 180 wave form p b4 qrs ryhthm regular pri interval .12 to .20 qrs intrval .04 to .10 sinus arrythmia hr 60-100 wave form p b4 qrs rhythm ireggular pri interval .12 to .20 qrs interval .04 to .10