Dysrhythmia Flex Education STUDY GUIDE |100% Correct|

Dysrhythmia Flex Education STUDY GUIDE |100% Correct| ___ ___ is the amount of blood pumped by the LV with each contraction or beat. *Ans*stroke volume ___ ___ is the number of times the LV contracts in 1 minute; the normal rate is 60-100 *Ans*heart rate ___ ___ occurs before normal firing of SA node usurping the normal pacemaker and can originate from atrial, junction, or ventricles. *Ans*premature beat (PAC, PJC, PVC) ___ ___ occurs from one of the lower pacemaker sites due to a default of the natural pacemaker. *Ans*escape beats ___ ___ occurs in a downward manner from atria to ventricles *Ans*antegrade conduction ___ ___ returns backwards through the conduction system *Ans*retrograde conduction ____ carry blood to the heart. *Ans*Veins ____ may lead to decreased cardiac output leading to decreased )2 delivery to the brain causing syncope, lightheadedness, or dizziness. *Ans*tachycardias _____ carry blood Away from the heart *Ans*arteries # P > # QRS =? *Ans*second degree AVB #p =# QRS=? *Ans*NSR #p< # QRS =? *Ans*junctional A NSR with a premature beat is called what? *Ans*Premature atrial contraction A strip with a rhythm of irregular-irregular and a P wave with multiple, dissimilar, unable identify at 400 bpm, and a not measurable PRI is what? *Ans*Atrial fib A strip with a saw tooth appearance is what and what is the rhythm? *Ans*Atrial flutter; reg or irreg A total lack of oxygen is known as? *Ans*hypoxia Aortic Valve connects? *Ans*LV and aorta As the LV contracts, the mitral valve closes and ___ ___ opens. *Ans*aortic valve Cardiac ischemia often causes chest pain known as? *Ans*angina pectoris (angina) CO is the amount of blood pumped by the LV in ___ minutes? *Ans*1 minute Each big box is equal to how many millivolts? *Ans*0.5 mV Each small square is equal to how many millivolts? *Ans*0.1 mV Graph paper for the strips is divided into small squares that are ___ in height and width. *Ans*1 mm in height and width Graph paper is divided into darker lines at every ___ square? *Ans*5th How big is each big box? *Ans*5 mm high and 5 mm wide How is the PRI measured? *Ans*where the P wave begins to the beginning of the QRS complex. How is the QRS interval measured? *Ans*from end of PRI to end of S wave. How is the QT interval measured? *Ans*from beginning of the QRS complex to end of the T wave. how is the ST segment evaluated? *Ans*elevated or depressed (usually elevated) How much time is each big box equal to? *Ans*0.20 sec How much time is each small square equal to? *Ans*0.04 sec If the A and V simultaneous conduct, what will happen to the P wave? (junction) *Ans*hidden in QRS (junction) If the conduction occurs in the atria after the ventricles, what happens to the p wave? *Ans*inverted P following QRS If the P wave is normal in size and shape, it is assumed to be of what origin? *Ans*sinus If the P wave is s/r and upright, where is the origin of the impulse? *Ans*SA node If the QRS complex is wide, there is no P waves, and the T wave is opposite, where is the origin of the impulse? *Ans*venticular If the rhythm is Junctional Escape Beat, what is the rhythm and rate? *Ans