E8.10

The Pregnant Patient

Two patients, modified prescribing, urgent treatment of severe illness, postpartum planning. Untreated illness is not safe.

Encounter card

Setting

Pregnancy planning, prenatal psychiatry, postpartum care.

Opening move

Frame as risk-benefit (untreated illness vs medication exposure). Coordinate with OB. Choose agents with most pregnancy/lactation data. Plan postpartum monitoring carefully — relapse risk is high.

Sample language

"I want to think about this with you — both for you and the baby. Untreated illness has real risks too. Let's walk through the options."
"For pregnancy, sertraline has the most data among SSRIs. Lithium is doable with monitoring. We'd avoid valproate."
"We need to plan postpartum carefully — that's actually the highest-risk period."

Listen for

Patient's preferences and concerns. Partner/family involvement. OB coordination. Plan for postpartum changes.

Common pitfalls

Stopping all medications because of pregnancy ("safer to be off"). Failing to coordinate with OB. Failing to plan postpartum. Missing peripartum-onset depression.

Red flags / escalate: Severe psychiatric illness in pregnancy. Active suicidality. Postpartum psychosis (medical emergency). IPV in pregnancy.

Documentation

Risk-benefit discussion. Specific medications discussed. OB coordination. Postpartum plan.

Real-world reality: Pregnancy psychiatric care requires coordination with OB — time the EMR doesn't allocate but the patient needs.

Pregnancy doesn't suspend the need for treatment. It modifies the approach.

Warm grey-tinted clinical notebook page, dusty rose accent. The risk-benefit frame in pregnancy — untreated illness vs medication exposure. Margin clusters on the framing.

The pregnant psychiatric patient requires a modified clinical approach that maintains rather than suspends treatment. The fundamental principle: untreated psychiatric illness in pregnancy is not safe. Untreated depression carries fetal and maternal risks. Untreated bipolar disorder carries substantial relapse and decision-making risk. Untreated psychotic illness threatens safety of both mother and child. The question is what to treat with, not whether to treat.

Risk-benefit framing grounds the conversation. "Both untreated illness and medication exposure have risks. Let's think about which combination is safest for both you and the baby." Honest acknowledgment of trade-offs builds the alliance that makes shared decision-making possible. The patient deserves the full picture, not a curated version.

Preferred agents: sertraline (most extensive SSRI pregnancy data); lamotrigine for bipolar maintenance (with dose adjustment because pregnancy alters clearance); older antipsychotics with extensive data (haloperidol) or specific atypicals (olanzapine has substantial registry data, with metabolic considerations); lithium with careful management (small Ebstein's anomaly risk requires fetal echocardiogram).

Avoided when alternatives exist: valproate (substantial teratogenicity — neural tube defects, cognitive impairment); paroxetine (cardiac malformation signal); benzodiazepines (first-trimester cleft palate signal; third-trimester floppy baby and withdrawal). For the woman of childbearing potential, plan medication choices with possible pregnancy in mind, not just current pregnancy.

OB coordination from the start. Share medication decisions and rationale with the OB team. Fetal echocardiogram if on lithium. Adjusted dosing during pregnancy as physiology changes. Joint planning for delivery and immediate postpartum period.

Postpartum is the highest-risk period for relapse. Plan for it during pregnancy. Prophylactic strategies for bipolar disorder. Close monitoring for depression in the first weeks. Specific watch for postpartum psychosis (medical emergency, often requiring hospitalization). The transition from pregnancy to postpartum is when most relapses occur; don't wait for them to plan.

Brexanolone and zuranolone are FDA-approved specifically for postpartum depression with rapid onset — major new tools for this period.

Postpartum planning — highest-risk period; prophylactic strategies; monitoring plan; postpartum psychosis emergency. Margin notes on each.

The anchor

Pregnancy modifies prescribing without suspending it. Frame risk-benefit, choose well-studied agents, coordinate with OB, plan postpartum carefully.

Coordination with OB — shared decision, shared monitoring, fetal echo for lithium, postpartum visit handoff. Margin clusters on the coordination.

Prove it

A 30-year-old patient with bipolar I tells you she's 8 weeks pregnant — she had stopped lithium 2 months ago when she discovered the pregnancy. She's now experiencing prodromal manic symptoms. What do you do?

This connects to

R11.1

Pregnancy & Lactation Prescribing (V3)

The pharmacology framework.

E7.7

Prescribing in Special Situations

The general framework.

Locked concepts unlock as you reach them on the path.