Substance Abuse/Addictive Flashcards
(79 cards)
How long can amphetamines be detected on UDS for?
1-3 days, but LOW Se/Sp
How long can cocaine be detected on UDS for?
2-4 days
How long can PCP be detected on UDS for?
4-7 days
How long can opioids be detected on UDS for?
1-3 days
How long can THC/cannabinoids be detected on UDS for?
3days - 4weeks (released from adipose stores)
How long can barbiturates be detected on UDS for? Specifically pentobarbital vs phenobarbital?
PENTObarbital = short-acting - 24hrs PHENObarbital = long-acting - 3wks
How long can benzodiazepines be detected on UDS for? Specifically lorazepam vs diazepam
Lorazepam = short-acting - 5days Diazepam = long-acting - 30days
ALCOHOL: What are the supposed mechanisms of EtOH?
ACTIVATES GABA, dopamine, 5-HT/Ser
INHIBITS GLU, voltage-gated Ca
ALCOHOL: What are the components of a CIWA protocol?
ANXIETY/AGITATION AH/VH/TH (formication) HA/ORIENTATION TREMOR/PAROXYSMAL SWEATS N/V
ALCOHOL: What is the short-term treatment for EtOH withdrawal?
BZ taper - CHLORDIAZEPOXIDE (librium), LORAZEPAM (Ativan) moreso than DIAZEPAM (Valium - Longer acting)
ALCOHOL: What is the course of EtOH withdrawal sx?
Onset: 6hrs and can last up to 2-7days
1) Generalized tonic clonic seizures (GTC) - 12-48hrs, peaks at 12-24hrs
2) Delirium tremens (DT) only occurs in 5% of population - have associated sx, peaks at 48-96hrs
ALCOHOL: What electrolyte abnormality predisposes to alcohol withdrawal-related GTCs?
HYPOMAGNESIUM
ALCOHOL: What are the 3 risk factors that predisposes to alcohol withdrawal-related DTs?
Medical illness, age>30yo, prior DT
ALCOHOL: What is in the BANANA BAG for actively withdrawing from alcohol pts?
THIAMINE/VIT B1 + FOLATE + MULTIVITAMIN
Mainly to prevent Wernicke’s
ALCOHOL: What are the 2 1ST LINE MEDICATIONS used for LONG-TERM ALCOHOL USE DISORDER?
1) NALTREXONE (Oral Revia, IM-Vivitrol) - ACTIVELY drinking
2) ACAMPROSATE (Campral) - ABSTINENT maintenance
ALCOHOL: 1st LINE: How does NALTREXONE work for ALCOHOL USE DISORDER? Contra-indicated in which pts?
Opioid antagonist that decreases “cravings” or the “high” associated with EtOH
Contra-indicated in pts w/ physiologic dependence to opioids + ACUTE LIVER FAILURE/hepatitis
ALCOHOL: 1st LINE :How does ACAMPROSATE work for ALCOHOL USE DISORDER? Can it be used in pts with severe liver dz or severe renal dz?
Modulates (Decreases) GABA transmission - Started POST-DETOX to prevent relapses?
YES, can be used for LIVER Dz
NO, can NOT be used for RENAL Dz pts
ALCOHOL: What are the 2 2ND LINE MEDICATIONS used for LONG-TERM ALCOHOL USE DISORDER?
1) DISULFURAM (Antabuse)
2) TOPIRAMATE (Topamax)
ALCOHOL: 2nd LINE: How does DISULFURAM work for ALCOHOL USE DISORDER? Contra-indications?
Blocks ALDEHYDE DEHYDROGENASE in liver -> Causes aversive rxn to EtOH (flushing/HA/N/V/palpitations/SOB)
CONTRA-INDICATIONS: Pregnancy + Psychosis + Severe cardiac dz
ALCOHOL: 2nd LINE: How does TOPIRAMATE work for ALCOHOL USE DISORDER?
Potentiates GABA, Inhibits Glu -> Reduces cravings and decreases EtOH use
ALCOHOL: In managing alcohol withdrawal pts with altered mental status (AMS), what is critical about the order of treatment?
Give THIAMINE/VITB1 BEFORE Glc infusion
If Glc is given first, will precipitate Wernicke-Korsakoff encephelopathy bec any limited VitB1 leftover will immediately be utilized with Glc by carbohydrate metabolism -> Acute neuronal damage
ALCOHOL: What are the 2 LONG-TERM COMPLICATIONS of ALCOHOL USE DISORDER?
1) WERNICKE ENCEPHELOPATHY - Confusion + Broad-based ataxia + Ophthalmoplegia (horizontal nystagmus, gaze palsy)
2) KORSAKOFF SYNDROME - Impaired recent memory + Chronic amnesia, anterograde amnesia + Compensatory confabulation
ALCOHOL: What is the cause of Wernicke Encephalopathy? Is this reversible?
ALCOHOLISM -> Decreased nutrition -> DECREASED VITB1/THIAMINE
YES, Reversible with VITB1 therapy
ALCOHOL: Is Korsakoff syndrome reversible?
MORESO IRREVERSIBLE
Reversible in only 20% of patients