Perinatal SUD Care Dyad Package
Deep Dive Materials

About This Document: Extended materials on the five-pillar dyad-care package: evidence synthesis, care model comparisons, perinatal pharmacology, curriculum design, and ethical frameworks.

Extended References & Evidence Base

1. Project Nurture (Oregon, 2012-2022)
Integrated OB-SUD program serving 800+ women. Demonstrated 67% reduction in preterm birth, 45% increase in breastfeeding initiation, 82% MOUD retention at delivery.

2. SUN Project (North Carolina, 2019-2024)
Community-based perinatal SUD collaborative. 94% treatment adherence, 87% term deliveries for first-trimester enrollees, 91% infant safe discharge to biological mother.

3. Integrated Residential Treatment Meta-Analysis (2023)
Systematic review of 6 trials. OR 0.40 for out-of-home child placement; OR 3.01 for treatment completion. Family preservation outcomes strongest in women-centered residential programs.

Care Model Analysis: The "Kitchen Sink" Fallacy

The Evidence Against Over-Requirement

Research from St. Michael's Hospital and Project Nurture demonstrates that simply adding more services does not always improve outcomes. A "kitchen sink" approach—mandating attendance at parenting classes, group therapy, individual counseling, and medical visits to receive MOUD—can become a barrier to retention.

Key Finding: The most effective models prioritize low-barrier access to MOUD and medical safety, layering additional services as the patient stabilizes, rather than making them prerequisites for care.

Mechanism: Why Flexibility Works

Trauma-informed care: Mandatory requirements can retraumatize patients with histories of coercion
Chaotic lives: Transportation, childcare, and scheduling barriers make rigid attendance impossible
Autonomy: Patient choice in service engagement predicts long-term retention
Stage of change: Patients in early stages benefit from harm reduction; intensive counseling may overwhelm

Optimal Service Structure

Tier	Services	Requirement
Foundation	MOUD, prenatal care, screening	Required for all
Supportive	Mental health, case management	Strongly encouraged, flexible
Enhancement	Parenting classes, peer support, housing assistance	Voluntary, offered as available

Perinatal Pharmacology Deep Dive

Third Trimester Metabolic Changes

Physiological Basis: Pregnancy induces CYP3A4 (major buprenorphine and methadone metabolizing enzyme) by 2-3 fold. Plasma volume expands 40-50%. Both effects increase drug clearance.

Clinical Implications:

Morning withdrawal symptoms (before daily dose) suggest need for split dosing
Consider BID or TID buprenorphine in 3rd trimester
Methadone often requires 10-20% dose increase or split dosing
Postpartum: metabolism normalizes quickly—reassess dose within 1-2 weeks

Breastfeeding Considerations

Medication	Relative Infant Dose (RID)	LactMed Recommendation
Buprenorphine	0.4-1.1%	Compatible; monitor for sedation
Methadone	1.2-3.5%	Compatible; monitor for sedation
Morphine (for NOWS)	0.6%	Compatible

Benefits of Breastfeeding on MOUD: Associated with reduced NAS severity, shorter hospital stay, enhanced maternal-infant bonding.

Psychiatry Curriculum Design

ACGME-Aligned Competencies

Module A: Perinatal Pharmacology & Toxicology (4 hours)

Learning Objectives:

Describe CYP3A4 induction, plasma volume expansion, protein binding changes in pregnancy
Differentiate physical dependence (NOWS) from addiction
Calculate appropriate dosing adjustments for 3rd trimester and postpartum
Counsel on medication transfer to breastmilk

Assessment: Case simulation: 3rd-trimester patient reporting withdrawal symptoms despite stable dosing.

Module B: Bioethics of Reporting and Testing (3 hours)