Mirtazapine in pregnancy and lactation: data from a case series.

Depression is a common disorder in pregnancy and associated with adverse effects for both mother and neonate. Pharmacological treatment and prevention options include mirtazapine. In a series of 56 cases, we investigated neonatal outcome after intrauterine exposure to mirtazapine and exposure through lactation in the first days postpartum.No increase in any neonatal complication was observed. None of the infants exposed to mirtazapine in the first trimester were born with a major malformation. Of the 54 infants exposed to mirtazapine in the third trimester, 14 were diagnosed with poor neonatal adaptation syndrome (PNAS). This incidence (25.9%) is similar to the incidence of PNAS after intrauterine exposure to other antidepressants. The incidence of PNAS after exposure to mirtazapine was significantly diminished in children who were partially or fully breastfed (18.6% versus 54.5%, P = 0.024).

Risk factors for poor neonatal adaptation after exposure to antidepressants in utero.

AIM: Infants exposed to antidepressants in utero are at risk of developing poor neonatal adaptation (PNA). This study identified risk factors for PNA. METHODS: In this cohort study, data on mothers and infants admitted to the maternity ward of a general hospital between 2007 and 2012 were analysed. All infants were exposed to an antidepressant during the last trimester of foetal life. The main outcome measure was PNA, defined as at least one Finnegan scores of four or more during admission. Risk factors analysed for their possible association with PNA included type of feeding, type and dosage of antidepressant, prematurity and maternal smoking, anxiety and depression. RESULTS: We included 247 infants in the study and 157 (64%) developed PNA. Formula feeding was associated with an increased risk of PNA compared to breastfeeding or mixed feeding (OR 3.16 95% CI 1.40-7.13 p = 0.003). Selective serotonin reuptake inhibitors (SSRIs) were associated with an increased risk of PNA compared to serotonin and noradrenaline reuptake inhibitors (OR 2.52 95% CI 1.07-5.95 p = 0.04). Dosage did not influence the risk of PNA (OR 1.50 95% CI 0.89-2.52 p = 0.13). CONCLUSION: Formula feeding and exposure to SSRIs were associated with development of PNA, but dosage was not.

Adapted Finnegan scoring list for observation of anti-depressant exposed infants.

OBJECTIVE: The Finnegan scoring list (FSL) is widely used to screen for poor neonatal adaptation in infants exposed to anti-depressants in utero. However, the large number of FSL-items and differential weighing of each item is time consuming. The aim of this study was to shorten and simplify the FSL yet preserving its clinimetric properties. METHODS: This observational study examined infants exposed to an anti-depressant during pregnancy admitted for at least 72 h on a maternity ward. Trained nurses completed the FSL three times daily. Items for the adapted FSL were selected through forward analysis whereby the number of selected items was based on the area under the curve (AUC). Internal validity was assessed by cross-validation. RESULTS: 183 infants met the inclusion criteria. By forward analysis eight equally-weighed items resulted in an AUC of 0.91. In cross-validation, the mean AUC was 0.89 for 8 items. This adapted FSL had a sensitivity of 97.7% and specificity of 37.0% and a sensitivity of 41.9% and specificity of 86.2% regarding a cut-off of, respectively, 1 and 2. CONCLUSIONS: An adapted FSL with eight equally-weighed items has acceptable clinimetric properties and can serve as an easy to apply screening tool in infants exposed to anti-depressants during pregnancy.

[Withdrawal in newborns after exposure to psychotropic medications during pregnancy]. / Ontwenning bij de pasgeborene na blootstelling aan psychofarmaca tijdens de zwangerschap.

The use of psychotropic medications during pregnancy causes withdrawal symptoms in 20-30% of the newborns. The literature on withdrawal symptoms is not unanimous concerning their recognition and treatment. A search of PubMed and Embase revealed 198 articles in which potential withdrawal symptoms in newborns were described following exposure to psychotropic medications during pregnancy. Commonly occurring withdrawal symptoms are mostly mild, including restlessness and sleeping and feeding difficulties. Severe symptoms such as convulsions are rare. It can sometimes be difficult to differentiate between symptoms of intoxication and symptoms of withdrawal. The Finnegan scale is widely used to recognise withdrawal from psychotropic medication. An observation period of at least 48 h post-partum is advised. Recognition of withdrawal is important to prevent needless additional tests. In withdrawal symptoms supportive measures such as feeding on demand and swaddling are usually sufficient. If withdrawal symptoms are severe, phenobarbital is a therapeutic option.