ACLS review
106. Describe the ECG characteristic of 2nd degree heart block type II
Atrial rate is greater than the ventricular rate
Presence of extra or non-conducted P waves not followed by QRS complexes
PR interval is normal or prolonged but remains the same on conducted beats
QRS complex is usually narrow < .12 sec
Atrial rate is regular, Ventricular rate is irregular.
107. How do you perform a “quick look” with the defibrillator paddles?
Change the lead selector to paddles mode
Apply conduction gel or gel pads to the paddles
Apply the paddles to the patient’s bear chest with one paddle over the apex of the heart and the other over the right sternal border
Observe the rhythm on the monitor
108. Name 5 causes common causes of bradycardia.
Hypoxia, hypothermia, heart blocks, head injury, heart medications, high vagal tone
109. How do you differentiate between sinus tachycardia and SVT?
ST is a nonspecific clinical sign. The causes include hypoxemia, hypovolemia, hyperthermia, metabolic stress, toxins, pain, and anxiety. Heart rate varies with activity. P waves present/normal. Rate is usually below 150.
SVT is usually sustained and unrelated to activity or the above clinical causes. P waves are usually absent. The rate is over 150 bpm.
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