Exam (elaborations)
Med Surg Exam 2- cardiac dysrhythmias (1).
- Course
- College Algebra
- Institution
- College Algebra
Med Surg Exam 2- cardiac dysrhythmias (1).
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Med Surg Exam 2- cardiac dysrhythmias60-100 - ANS-how many times per minute does the SA node fire
40-60 - ANS-how many times per minute does the AV node fire
0.12-0.20 seconds - ANS-normal PR interval
.04 -.12 seconds - ANS-QRS interval
0.2 seconds (5 mm) - ANS-how many seconds does the space between darkened lines on
standard EKG paper represent
0.04 seconds (1 mm) - ANS-how many seconds does the space between small dotted lines on
standard EKG paper represent
ischemia of cardiac cells
MI - ANS-what does and elevated ST segment indicate (starts above baseline)
hypoxia
likely to be fixed by cath lab procedure - ANS-what does depression of the ST segment indicate
one p wave per QRS
QRS evenly spaced
60-100 BPM - ANS-normal sinus rhythm
one p wave per QRS
QRS evenly spaces
assess for physical symptom: pain, hympvol, fever - ANS-sinus tach
one p wave per QRS
QRS evenly spaced
this is OK if pt is stable
assess for: signs of low perfusion, chest pain, decreased BP
*give ATROPINE if not getting good perfusion* - ANS-sinus brady
regular rhythm, but NO p wave
LOW HR, *paced by AV node*
depressed ST
*key: absence of p waves, low HR because SA node is failing* - ANS-junctional
no p wave, irregular rhythm *need apical pulse*
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