Lithium in the Prevention of Postpartum Recurrence of Mood Disorders: A Systematic Review and Meta-Analysis.
Verinder Sharma, Emily L Dietrich, Boseok Cha et al.
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In 30 seconds
This systematic review and random-effects meta-analysis assessed postpartum mood-disorder recurrence among women with bipolar I or II disorder, comparing those who received prophylactic lithium with those who did not. Eight studies involving 554 women contributed data on lithium prophylaxis; two additional studies examined discontinuation. Pooled recurrence proportions were 0.21 (95% CI 0.15-0.29) in lithium-treated patients and 0.41 (95% CI 0.33-0.50) in untreated patients. The authors interpreted the findings as suggesting a preventive effect, while cautioning that confounding by indication and limited evidence constrain interpretation.
Key findings
- Pooled postpartum recurrence was 0.21 (95% CI 0.15-0.29) among lithium-treated patients.
- Pooled postpartum recurrence was 0.41 (95% CI 0.33-0.50) among lithium-untreated patients.
- Eight studies with 554 women informed the prophylaxis analysis; two studies assessed lithium discontinuation.
Why it matters
Postpartum recurrence is an important concern for women with bipolar disorder. The lower pooled recurrence proportion among lithium-treated patients supports consideration of prophylaxis as a relevant topic in perinatal mood-disorder care. However, the evidence does not establish a causal treatment effect, so the findings should be interpreted alongside the review’s stated concerns about confounding and the limited literature.
What to keep in mind
The authors caution that confounding by indication and limited literature constrain interpretation; the discontinuation evidence was indirect.