Quiz 2 Flashcards
What analgesics activate the mu receptors and exert a weak activation of kappa receptors:
Opioids: morphine/codeine; controlled substances
Activation of what receptor will lead to respiratory depression, euphoria, sedation, analgesia:
mu receptors
Activation of what receptor leads to sedation and analgesia:
Kappa receptors
What are the two isomers that opioids have:
levo and dextro
what isomer has an analgesia effect
levo
What isomer has an antitussive effect:
levo and dextro
Which isomer causes physical dependence:
levo
What are the characteristics of opioid isomers:
3 A: analgesia, antitussive (medulla), antidiarrheal; suppressed RR (medulla)
What is given to treat moderate/severe acute/chronic pain; pre-op; or dyspnea d/t ventricular failure and PE:
opioids (indications)
Would you give opioids to pts w/head injuries:
No
Would you give opioids to asthmatic pts:
No
Would you give opioids to pts w/hypotension:
No
Would you give opioids to pts in labor or delivery of pre-mis:
No
Would you give opioids to renal or hepatic impairment pts:
No
What are the side effects d/t opioids:
orthostatic hypotension; N/V/constipation; Drowsiness/sedation/confusion; and urinary retention
What is a S/S of opioids toxicity:
pupillary constriction
What are the ADVERSE effects d/t opioids:
RR depression (<10); hypotension, P. constriction; tolerance/physical dependance; withdrawal syndrome
What drugs can increase the effect of opioids:
EtOH; sedative-hypnotics; antipsychotic; muscle relaxants
What are the nemonics for common opioids:
Drugs ending w/ONE (phone/done), MFM: morphine, fentanyl, meperidine
What is the onset of morphine sulfate when given parenterally:
Rapid especially if it’s IV
What is the duration of morphine sulfate:
3-5 hrs
What is the duration of morphine sulfate controlled release:
8-12 hr
If a pt has severe pain, how is morphine sulfate given:
IV
What are the pharmocokinetics of morphine sulfate:
liver metabolizes; sm amount crosses BBB; 90% is excreted = short half-life; crosses placenta/breast milk