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CLINICAL SYNTHESISFull Access

Quick Reference for Psychosomatic Medicine

Published Online:https://doi.org/10.1176/foc.3.2.203

Important Drug Interactions
Drug InteractionsEffect
Antipsychotics
    AlcoholIntensifies CNS depression
    AmphetaminesAntagonizes efficacy
    AntacidsDecreases neuroleptic absorption
    AnticholinergicsAdditive anticholinergic effects
    AntihypertensivesaHypotension
    BarbituratesDecreases neuroleptic levels
    EpinephrineaHypotension
    LevodopaAntagonizes levodopa efficacy
    LithiumIncreases neurotoxicity
    MAOIsaHypotension
    TCAsIncreases TCA plasma levels
BZs
    Alcohol (and other CNS depressants)Intensifies CNS depression
    Alcohol (acute)Increases BZ levels
    Alcohol (chronic)Decreases BZ levels
    AntacidsDecreases BZ levels
    CimetidinebIncreases BZ levels
    DisulfirambIncreases BZ levels
    SSRIsIncreases BZ levels
    IsoniazidbIncreases BZ levels
    Oral contraceptivesbIncreases BZ levels
    RifampinbDecreases BZ levels
    Tobacco/nicotinebDecreases BZ levels
Carbamazepine (induces CYP450 3A3/3A4)
    AlprazolamDecreases alprazolam levels
    CimetidineIncreases carbamazepine levels
    ClonazepamDecreases clonazepam levels
    Diltiazem, verapamilIncreases carbamazepine levels
    ErythromycinIncreases carbamazepine levels
    IsoniazidIncreases carbamazepine levels
    PhenobarbitalDecreases carbamazepine levels
    PhenytoinDecreases carbamazepine levels
    PrimidoneDecreases carbamazepine levels
    PropoxypheneIncreases carbamazepine levels
    SSRIsIncreases carbamazepine levels
    ValproateDecreases valproate levels
Lithium
    AcetazolamideDecreases lithium levels
    AntipsychoticsIncreases neurotoxicity
    Beta-blockersDecreases tremor
    CarbamazepineIncreases lithium effects
    Captopril, enalaprilIncreases lithium levels
    CyclosporineMarkedly increases lithium levels
    Diltiazem, verapamilIncreases lithium toxicity
    MethyldopaIncreases lithium toxicity
    Potassium iodideEnhances hypothyroid effects
    TetracyclineIncreases lithium levels
    Thiazide diureticsIncreases lithium levels
SSRIs
    BZsbIncreases BZ levels
    CarbamazepineIncreases carbamazepine levels
    AntipsychoticsIncreases neuroleptic levels
    TCAsIncreases TCA levels
MAOIs
    AlcoholAdditive CNS depression
    ClomipramineSerotonin syndrome
    SSRIsSerotonin syndrome
    MeperidineSerotonin syndrome
    PhenothiazineHypotension
    SuccinylcholineProlongs muscle relaxation
    TyraminePotential hypertensive crisis
    Sympathomimetic drugs (amphetamine, cocaine, dopamine, ephedrine, epinephrine, metaraminol, norepinephrine, phenylpropanolamine, phenylephrine)Potential hypertensive crisis
TCAs
    AlcoholAdditive CNS depression
    AnticholinergicsAdditive anticholinergic effects
    Antihypertensives (guanethidine, clonidine, debrisoquin)Increases hypertension
    AntipsychoticsIncreases TCA plasma levels
    BZsAdditive CNS depression
    Class I antiarrhythmics (disopyramide, lidocaine, quinidine, procainamide)Prolongs cardiac conduction
    LiothyronineEnhances antidepressant action

CNS=central nervous system; MAOI=monoamine oxidase inhibitor; TCA=tricyclic antidepressant; BZ=benzodiazepine; SSRI=selective serotonin reuptake inhibitor; CYP450=cytochrome P450

a Phenothiazines (chlorpromazine, thioridazine, and mesoridazine)

b Except oxazepam, lorazepam, alprazolam, and temazepam

Source: Rundell JR, Wise MG: Concise Guide to Consultation Psychiatry, 3rd ed, Washington, DC, American Psychiatric Press, 2000, pp 176–178

Important Drug Interactions
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Pain Assessment Instruments for Acute and Chronic Pain
Acute PainRecurrent/Chronic Pain
Visual analog scale or numeric rating scaleVisual analog scale, McGill Pain Questionnaire
Medication useMedication use
Observer ratingObserver rating
 Pain diary
 West Haven–Yale Multidimensional Pain Inventory
 Psychological measures

Source: Leo RJ: Concise Guide to Pain Management for Psychiatrists, Washington, DC, American Psychiatric Press, 2003, p 50

Pain Assessment Instruments for Acute and Chronic Pain
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Pain Assessment Instruments

Source: Leo RJ: Concise Guide to Pain Management for Psychiatrists, Washington, DC, American Psychiatric Publishing, 2003, p 52

Role of Psychiatrists in Pain Management (Biopsychosocial Approach)
Assess pain
Assess intervening variables that affect pain
Prognosticate (consider factors that might influence pain, treatment compliance, and effects of treatment)
Determine problem areas for the patient
Establish a treatment approach
Delineate goals of treatment
Reassess treatment efficacy
Make modifications in the treating plans as necessary

Source:Leo RJ: Concise Guide to Pain Management for Psychiatrists, Washington, DC, American Psychiatric Press, 2003, p 8

Role of Psychiatrists in Pain Management (Biopsychosocial Approach)
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Depression Screening Tool

Common Consent Options for Patients Who Lack the Mental Capacity for Health Care Decisions
Proxy consent of next of kin
Adjudication of incompetence; appointment of a guardian
Institutional administrators or committees
Treatment review panels
Substituted consent of the court
Advance directives (living will, durable power of attorney, health care proxy)
Statutory surrogates (spouse or court-appointed guardian)a

a Medical statutory surrogate laws (when treatment wishes of the patient are unstated)

Source: Simon RI, Schindler BA, Levenson JL: Legal issues, in The American Psychiatric Publishing Textbook of Psychosomatic Medicine. Edited by Levenson JL. Washington, DC, American Psychiatric Publishing, 2005, p 43

Common Consent Options for Patients Who Lack the Mental Capacity for Health Care Decisions
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Helpful Questions for Domestic Abuse Screening by Clinicians
1. Do you and your partner argue a lot? Does it ever get physical? Has either one of you hit the other? Has either one of you injured the other?
2. Do you ever feel unsafe at home?
3. Has anyone hit you or tried to injure you in any way?
4. Has anyone ever threatened you or tried to control you?
5. Have you ever felt afraid of your partner?
6. Is there anything particularly stressful going on now? How are things at home?
7. I see patients in my practice who are being hurt or threatened by someone they love. Is this happening to you? Has this ever happened to you?

Source:Onyike CU, Lyketsos CG: Aggression and violence, in The American Psychiatric Publishing Textbook of Psychosomatic Medicine. Edited by Levenson JL. Washington, DC, American Psychiatric Publishing, 2005, p 184

Helpful Questions for Domestic Abuse Screening by Clinicians
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