Opioid & non-opioid analgesics 2 Flashcards
How do opioids affect RR and tidal volume?
decrease RR, increased tidal volume
With opioids, we may see an increase in __________ if ventilation is not maintained
PaCO2
What effects do opioids have on SSEPs?
minimal effects
What is the reason behind miosis with opioids?
Edinger Westphal nucleus stimulation–> increased PNS stimulation of ciliary ganglion and oculomotor nerve CN3
With morphine and meperidine, we may see a decrease in __________
BP as a result of histamine
Is the baroreceptor reflex affected with opioids?
no
Is myocardial contractility affected with opioids?
no; myocardial depression can occur if combined with N2O
What causes the lowest increase in biliary pressure and contraction of sphincter of Oddi?
meperidine
What are the effects that opioid has on gastric emptying and peristalsis?
prolonged
slows peristalsis–> constipation
How do opioids affect thermoregulation?
resets hypothalamic temperature set point–> reduced core body temperature
What are the classifications of opioids?
naturally occurring
semisynthetic
synthetic
____________ is the standard by which all other opioids are compared
Morphine
Opioids ordered from most to least potent are
Sufentanil> fentanyl=remifentanil>alfentanil>hydromorphone>morphine>meperidine
____________ occurs when a person taking a drug will go through withdrawal upon discontinuation of that drug
Dependence
_____________ occurs when a patient requires higher doses of a drug to achieve a given effect
Tolerance
____________ is a disease; If a person cannot stop using a drug despite negative consequences from using that drug.
Addiction
Tolerance develops to nearly all the side effects associated with opioids with the exception of
miosis and constipation
Patients who are physically dependent on opioid agonists will experience
s/sx of withdrawal upon discontinuation of these drugs