PMHNP Exam : 300 Practice Questions & Rationales | Guaranteed Pass | Psychiatry Mental Health Nurse Practitioner Certification Review

PMHNP Exam : 300 Practice Questions & Rationales | Guaranteed Pass | Psychiatry Mental Health Nurse Practitioner Certification Review Are you preparing for the Psychiatric-Mental Health Nurse Practitioner (PMHNP) board exam and feeling overwhelmed? This comprehensive 300-question practice exam is your ultimate study companion, designed to mirror the actual certification test format and challenge your clinical knowledge across all key domains. PMHNP EXAM 2026/2027: A Review 300 Comprehensive Multichoice Practice Questions and Solutions with Rationales| Guaranteed Pass ________________________________________ TABLE OF CONTENTS SECTION 1: PHARMACOLOGY & PSYCHOPHARMACOLOGY (Questions 1-50) SECTION 2: NEUROBIOLOGY & NEUROANATOMY (Questions 51-80) SECTION 3: PSYCHIATRIC DISORDERS & DIAGNOSIS (Questions 81-130) SECTION 4: ASSESSMENT & SCREENING TOOLS (Questions 131-165) SECTION 5: PSYCHOTHERAPY & THERAPEUTIC MODALITIES (Questions 166-190) SECTION 6: ETHICS, LEGAL & PROFESSIONAL ISSUES (Questions 191-220) SECTION 7: RESEARCH & EVIDENCE-BASED PRACTICE (Questions 221-245) SECTION 8: CULTURAL CONSIDERATIONS (Questions 246-265) SECTION 9: LIFESPAN & DEVELOPMENTAL CONSIDERATIONS (Questions 266-285) SECTION 10: SPECIAL POPULATIONS & COMORBIDITIES (Questions 286-300) ________________________________________ MULTICHOICE SECTION 1: PHARMACOLOGY & PSYCHOPHARMACOLOGY Question 1: A patient is taking Tegretol (carbamazepine) and Lamictal (lamotrigine). The PMHNP should be aware that Tegretol will have what effect on Lamictal? A) Increase Lamictal levels by 200% B) Decrease Lamictal levels C) No effect on Lamictal levels D) Increase Lamictal levels by 50% Answer: B) Decrease Lamictal levels Rationale: Tegretol (carbamazepine) is a CYP450 inducer. Inducers speed up metabolism of other drugs, leading to decreased serum levels. Therefore, Tegretol will lower the dose of Lamictal. The question states "Tegretol is an inducer → will lower dose of Lamictal and BCP's." ________________________________________ Question 2: A female patient is taking oral contraceptives (BCPs) and Lamictal. The PMHNP should be aware that BCPs will have what effect on Lamictal? A) Increase Lamictal levels B) No effect on Lamictal C) Decrease Lamictal levels D) Cause toxicity Answer: C) Decrease Lamictal levels Rationale: Oral contraceptives (BCPs) are inducers of the CYP450 system. They will lower the dose of Lamictal. The question notes "BCP's are inducers - will lower dose of Lamictal." ________________________________________ Question 3: A patient is prescribed erythromycin while taking Trileptal (oxcarbazepine). What action should the PMHNP take? A) Increase the Trileptal dose B) Decrease the Trileptal dose C) No change needed D) Discontinue the erythromycin Answer: B) Decrease the Trileptal dose Rationale: Trileptal is an inducer while erythromycin is an inhibitor. When an inhibitor is added to a drug that is an inducer, the level of the inducer will increase. Therefore, the PMHNP would need to decrease the Trileptal level. The question states "Trileptal (inducer) and erythromycin is an inhibitor" - you will need to decrease the level. ________________________________________ Question 4: Which of the following atypical antipsychotics can be used in adolescents at low doses? A) Clozapine, Risperdal, Geodon B) Zyprexa, Abilify, Seroquel C) Latuda, Invega, Saphris D) Only Risperdal and Abilify Answer: B) Zyprexa, Abilify, Seroquel Rationale: Three atypical antipsychotics that can be used with teens at low doses are Zyprexa (olanzapine), Abilify (aripiprazole), and Seroquel (quetiapine). Clozapine is typically reserved for treatment-resistant cases with close monitoring. ________________________________________ Question 5: What is the primary risk of using Tramadol in psychiatric patients? A) Respiratory depression B) Serotonin Syndrome C) Cardiac arrhythmias D) Hepatotoxicity Answer: B) Serotonin Syndrome Rationale: Tramadol is very serotonergic and carries a significant risk of Serotonin Syndrome, especially when combined with other serotonergic agents like SSRIs, SNRIs, or MAOIs. ________________________________________ Question 6: Which of the following medications is associated with the HLB-1502 allele increasing the risk of Stevens-Johnson Syndrome (SJS) in Asian populations? A) Lamictal B) Tegretol C) Lithium D) Zyprexa Answer: B) Tegretol Rationale: The HLB-1502 allele seen in Asians increases the risk of SJS, particularly with Tegretol (carbamazepine), Trileptal, and other AEDs. Genetic screening is recommended in at-risk populations before initiating these medications. ________________________________________ Question 7: A patient on Tegretol (carbamazepine) develops a fever and sore throat. What lab value should the PMHNP be most concerned about? A) Serum sodium B) Absolute Neutrophil Count (ANC) C) Liver function tests D) Serum potassium Answer: B) Absolute Neutrophil Count (ANC) Rationale: Tegretol carries a risk of agranulocytosis. The PMHNP should monitor ANC and WBC. If ANC 1000, the medication should be stopped and the lab repeated. Normal ANC is mm³. Also monitor for hyponatremia. ________________________________________ Question 8: When a patient is on Depakote (valproate) and Lamictal (lamotrigine) together, what is the interaction? A) Both are CYP450 inducers of the other, lowering levels of both B) Both are CYP450 inhibitors, increasing levels of both C) Depakote increases Lamictal levels by 200% D) No significant interaction exists Answer: C) Depakote increases Lamictal levels by 200% Rationale: Depakote inhibits the metabolism of Lamictal, leading to significantly increased Lamictal levels. The question states "Depakote to Lamictal - Increase Lamictal 200%." Therefore, when prescribing Lamictal with Depakote, the starting dose of Lamictal must be reduced. ________________________________________ Question 9: A patient on Lithium is prescribed an NSAID for arthritis. What should the PMHNP monitor? A) Decreased Lithium levels B) Increased Lithium levels and toxicity C) No change in Lithium levels D) Decreased renal function only Answer: B) Increased Lithium levels and toxicity Rationale: NSAIDs can cause Lithium levels to increase, leading to toxicity. Lithium and NSAIDs compete for renal excretion, and NSAIDs reduce renal clearance of Lithium. ________________________________________ Question 10: A patient taking Lithium presents with dehydration. What effect will this have on Lithium levels? A) Decrease Lithium levels B) Increase Lithium levels C) No effect D) Cause arrhythmias Answer: B) Increase Lithium levels Rationale: Dehydration leads to increased Lithium levels because the kidneys conserve sodium and water, which also causes increased reabsorption of Lithium. Similarly, decreased sodium intake will also increase Lithium levels. Conversely, drinking a lot of water will decrease Lithium levels. ________________________________________ Question 11: Which of the following is a risk of using Lithium in combination with ACE inhibitors? A) Decreased Lithium levels B) Increased Lithium levels C) No interaction D) Increased risk of serotonin syndrome Answer: B) Increased Lithium levels Rationale: ACE inhibitors can increase Lithium levels by reducing renal clearance. This combination requires close monitoring of Lithium levels and renal function. ________________________________________ Question 12: What lab test should be ordered before starting Depakote (valproate) in a female of childbearing age? A) Pregnancy test (HCG levels) B) Liver function tests C) Serum ammonia D) CBC with differential Answer: A) Pregnancy test (HCG levels) Rationale: Depakote is teratogenic and causes neural tube defects, including spina bifida. It is Pregnancy Category D. A pregnancy test should be performed before initiation in females of childbearing age. ________________________________________ Question 13: Clozapine (Clozaril) requires monitoring of which lab value? When should it be discontinued? A) WBC 3000; discontinue if ANC 2000 B) WBC 2500; discontinue if ANC 1000 C) WBC 3000; discontinue if ANC 1500 D) WBC 3500; discontinue if ANC 1200 Answer: B) WBC 2500; discontinue if ANC 1000 Rationale: Clozapine requires monitoring of WBC and ANC due to risk of agranulocytosis. If WBC is 2500 or ANC is 1000 (or 950), the medication should be discontinued. Clozapine requires REMS program monitoring. ________________________________________ Question 14: A patient on Latuda (lurasidone) should be instructed to take the medication: A) On an empty stomach B) With food C) At bedtime only D) With grapefruit juice Answer: B) With food Rationale: Both Latuda (lurasidone) and Geodon (ziprasidone) should be taken with food to maximize absorption. The question notes "Latuda and Geodon - Take with food." ________________________________________ Question 15: What is the CYP450 interaction between Tegretol and macrolide antibiotics? A) Macrolides decrease Tegretol levels B) Macrolides increase Tegretol levels C) No interaction D) Macrolides have no effect Answer: B) Macrolides increase Tegretol levels Rationale: When Tegretol and macrolides (erythromycin, clarithromycin) are mixed, macrolides inhibit CYP450 enzymes, leading to increased Tegretol levels and potential toxicity. ________________________________________ Question 16: Which of the following medications is the drug of choice for Heart Failure and Hypertension in psychiatric patients? A) Beta-blockers B) ACE Inhibitors C) Calcium channel blockers D) Diuretics Answer: B) ACE Inhibitors Rationale: ACE inhibitors are the drug of choice for Heart Failure and Hypertension. They provide mortality benefit in heart failure patients. ________________________________________ Question 17: A patient develops muscle pain and red urine with elevated leukocyte esterase. What lab should be ordered? A) Microalbumin B) CKMB with isoenzymes C) Myoglobinuria D) Urine culture Answer: C) Myoglobinuria Rationale: Muscle pain with red/cherry-colored urine suggests rhabdomyolysis. The PMHNP should order myoglobinuria testing. This can occur with antipsychotics, statins, or traumatic injury. ________________________________________ Question 18: What are the 3 CK muscle enzyme tests, and which one indicates cardiac muscle damage? A) CKBB, CKMM, CKMB; CKMB indicates cardiac damage B) CKMM, CKMB, CKBB; CKMM indicates cardiac damage C) CKMB, CKBB, CKMM; CKBB indicates cardiac damage D) CKMT, CKMB, CKMM; CKMT indicates cardiac damage Answer: A) CKBB, CKMM, CKMB; CKMB indicates cardiac damage Rationale: The three CK muscle enzyme tests are CKBB (brain), CKMM (muscle), and CKMB (cardiac). CKMB is related to cardiac muscle damage. Normal CKMB is 0.3 mcg/L. Elevated levels may indicate polymyositis or rhabdomyolysis. ________________________________________ Question 19: What psychiatric side effects can occur with leukotriene receptor agonists (Singulair, Accolate, Zyflo)? A) Sedation and weight gain B) Agitation, aggression, anxiety, hallucinations, depression, insomnia, SI, tremor C) Mania and psychosis D) Cognitive impairment only Answer: B) Agitation, aggression, anxiety, hallucinations, depression, insomnia, SI, tremor