Prolonged antepartum hospitalization: no time for rest

Association Between Antepartum Admission and Postpartum Depressive Symptoms: Short Title: Antepartum Hospital Admission and Postpartum Depressive Symptoms

BACKGROUND

Postpartum depression affects 14% of pregnant individuals and is a leading cause of preventable maternal mortality. Complications of pregnancy, such as preterm labor or pre-eclampsia, may require hospitalization for close monitoring and management. The impact of an antenatal hospitalization during pregnancy on postnatal depression remains understudied.

OBJECTIVE

To evaluate whether hospital admission during pregnancy was associated with postpartum depressive symptoms in individuals who were enrolled in a collaborative care model and to evaluate whether enrollment in the collaborative care model during pregnancy mitigated this association.

STUDY DESIGN

This secondary analysis of a prospective cohort study included perinatal people enrolled in a collaborative care model at a quaternary academic center between 2017-2021. The primary outcome was presence of moderately severe or severe postpartum depressive symptoms at 6 weeks postpartum defined as a score of 15 or greater on a PHQ-9. The prevalence of symptoms of this severity was compared between those who experienced an antepartum hospitalization and those who did not using bivariable and multivariable analyses. A Breslow Day test was used to evaluate whether any observed association between antepartum hospitalization and postpartum depressive symptoms differed based on timing of enrollment in the collaborative care model.

RESULTS

During the study period, 1897 individuals met inclusion criteria. Of these, 162 (8.5%) were admitted to the hospital during pregnancy. Of those with an antepartum hospitalization, 20 (12.4%) developed moderately severe to severe postpartum depressive symptoms compared to 136 (7.8%) of those who were not hospitalized (p=0.046). After adjustment for confounders identified through use of a directed acyclic graph, this difference did not persist in multivariable analysis (aOR 1.55, 95% CI [0.87-2.75]). A Breslow Day test demonstrated heterogeneity across enrollment timing, so subgroup analyses were performed for those enrolled during pregnancy (n=930) vs postpartum (n=967). Hospital admission was associated with higher rates of moderately severe to severe postpartum depressive symptoms in those enrolled in the collaborative care model postpartum (19.7% vs 10.6%, p=0.015, aOR 2.25, 95% CI [1.07-4.71]), but not those enrolled antenatally (5.8% vs 5.0%, p=0.735, aOR 1.09, 95% CI [0.38-3.19]).

CONCLUSIONS

Antepartum hospital admission was associated with higher rates of moderately severe to severe depressive symptoms. This association did not exist among individuals enrolled in collaborative care model during pregnancy, suggesting a potential protective effect afforded by engagement in a mental health support programming.

Pharmacologic venous thromboembolism prophylaxis for preterm prelabor rupture of membranes

BACKGROUND

Pregnant patients with preterm prelabor rupture of membranes (PPROM) may experience prolonged hospitalization, which is an indication for pharmacologic venous thromboembolism (VTE) prophylaxis according to certain international guidelines. The proportion of patients who deliver unexpectedly and within a period during which pharmacologic prophylaxis would be expected to impact coagulation is unknown.

OBJECTIVE

To estimate the proportion of patients with PPROM who would deliver within 12 hours of typical dosing of pharmacologic VTE prophylaxis if administered routinely for antepartum admissions >72 hours.

STUDY DESIGN

This is a retrospective cohort study from a database including patients admitted for expectant management of PPROM January 2011 to September 2020. The outcome of the study was the proportion of patients who remained undelivered 72 hours after admission and experienced an unplanned delivery potentially within 12 hours of enoxaparin administration. We evaluated patients undelivered after 72 hours due to international recommendations to initiate VTE prophylaxis in hospitalized patients after 72 hours. Unplanned delivery was defined as onset of spontaneous labor or other indication for immediate delivery. Timing of delivery was analyzed based on usual timing of enoxaparin administration daily at approximately 8 am and the recommendation to withhold regional anesthesia until 12 hours after a prophylactic dose.

RESULTS

1381 deliveries were identified as PPROM out of the 49,322 deliveries in our database. 139 cases were included after the following exclusions: delivery >35 weeks (N=641), rupture of membranes >34 weeks (N=145), delivery <72 hours after admission (N=409), insufficient data (N=35), and duplicates (N=12). Sixty of the 139 (43%) had an unplanned delivery, while 33 of these (24% of total) occurred within 12 hours of enoxaparin administration.

CONCLUSION

A quarter of patients admitted for PPROM had an unplanned delivery within 12 hours of typical enoxaparin dosing. This cohort may experience harm (ineligibility for regional anesthesia, risks of general anesthesia, increased risk of bleeding) if given routine pharmacologic VTE prophylaxis. Risk/benefit considerations should be discussed with patients in considering pharmacologic versus mechanical prophylaxis during prolonged hospitalization for PPROM.

Evaluation of Sleep in Pregnant Inpatients Compared With Outpatients

OBJECTIVE

To evaluate whether antepartum hospitalization was associated with differences in sleep duration or disrupted sleep patterns.

METHODS

This was a prospective cohort study with enrollment of pregnant people aged 18-55 years with singleton gestations at 16 weeks of gestation or more between 2021 and 2022. Each enrolled antepartum patient was matched by gestational age to outpatients recruited from obstetric clinics at the same institution. Participants responded to the ISI (Insomnia Severity Index) and wore actigraph accelerometer watches for up to 7 days. The primary outcome was total sleep duration per 24 hours. Secondary outcomes included sleep efficiency (time asleep/time in bed), ISI score, clinical insomnia (ISI score higher than 15), short sleep duration (less than 300 minutes/24 hours), wakefulness after sleep onset, number of awakenings, and sleep fragmentation index. Outcomes were evaluated with multivariable generalized estimating equations adjusted for body mass index (BMI), sleep aid use, and insurance type, accounting for gestational age correlations. An interaction term assessed the joint effects of time and inpatient status.

RESULTS

Overall 58 participants were included: 18 inpatients and 40 outpatients. Inpatients had significantly lower total sleep duration than outpatients (mean 4.4 hours [SD 1.6 hours] inpatient vs 5.2 hours [SD 1.5 hours] outpatient, adjusted β=-1.1, 95% CI, -1.8 to -0.3, P =.01). Awakenings (10.1 inpatient vs 13.8, P =.01) and wakefulness after sleep onset (28.3 inpatient vs 35.5 outpatient, P =.03) were lower among inpatients. There were no differences in the other sleep outcomes, and no interaction was detected for time in the study and inpatient status. Inpatients were more likely to use sleep aids (39.9% vs 12.5%, P =.03).

CONCLUSION

Hospitalized pregnant patients slept about 1 hour/day less than outpatients. Fewer awakenings and reduced wakefulness after sleep onset among inpatients may reflect increased use of sleep aids in hospitalized patients.

Physical activity among pregnant inpatients and outpatients and associations with anxiety

OBJECTIVE

Physical activity is linked to lower anxiety, but little is known about the association during pregnancy. This is especially important for antepartum inpatients, who are known to have increased anxiety yet may not be able to achieve target levels of physical activity during hospitalization. We compared physical activity metrics between pregnant inpatients and outpatients and explored correlations with anxiety.

MATERIALS AND METHODS

This was a prospective cohort between 2021 and 2022 of pregnant people aged 18-55 years carrying singleton gestations ≥ 16 weeks. Three exposure groups were matched for gestational age: 1) outpatients from general obstetric clinics; 2) outpatients from high-risk Maternal-Fetal Medicine obstetric clinics; and 3) antepartum inpatients. Participants wore Actigraph GT9X Link accelerometer watches for up to 7 days to measure physical activity. The primary outcome was mean daily step count. Secondary outcomes were metabolic equivalent tasks (METs), hourly kilocalories (kcals), moderate to vigorous physical activity (MVPA) bursts, and anxiety (State-Trait Anxiety Inventory [STAI]). Step counts were compared using multivariable generalized estimating equations adjusting for maternal age, body-mass index, and insurance type as a socioeconomic construct, accounting for within-group clustering by gestational age. Spearman correlations were used to correlate anxiety scores with step counts.

RESULTS

58 participants were analyzed. Compared to outpatients, inpatients had significantly lower mean daily steps (primary outcome, adjusted beta -2185, 95 % confidence interval [CI] -3146, -1224, p < 0.01), METs (adjusted beta -0.18, 95 % CI -0.23, -0.13, p < 0.01), MVPAs (adjusted beta -38.2, 95 % CI -52.3, -24.1, p < 0.01), and kcals (adjusted beta -222.9, 95 % CI -438.0, -7.8, p = 0.04). Over the course of the week, steps progressively decreased for inpatients (p-interaction 0.01) but not for either of the outpatient groups. Among the entire cohort, lower step counts correlated with higher anxiety scores (r = 0.30, p = 0.02).

CONCLUSION

We present antenatal population norms and variance for step counts, metabolic equivalent tasks, moderate to vigorous physical activity bursts, and kcals, as well as correlations with anxiety. Antepartum inpatients had significantly lower physical activity than outpatients, and lower step counts correlated with higher anxiety levels. These results highlight the need for physical activity interventions, particularly for hospitalized pregnant people.

Activity Restriction and Hospitalization in Pregnancy: Can Bed-Rest Exercise Prevent Deconditioning? A Narrative Review

Evidence suggests that exercise during pregnancy is beneficial to both parent and fetus. However, there are high-risk pregnancy conditions that may warrant hospitalization. In our narrative review, we first describe the clinical implications for activity restriction in pregnancy, the effects of hospitalization, and the impact of bed rest on non-pregnant individuals. We provide examples of a 30 min bed-rest exercise program for hospitalized pregnant patients using the principal of suggested frequency, intensity, time (duration) of activity, and type of activity (FITT) using a resistance tool while in bed. If the individual is able to ambulate, we recommend short walks around the ward. Every minute counts and activity should be incorporated into a program at least 3 times per week, or every day if possible. As in all exercise programs, motivation and accountability are essential. Flexibility in timing of the exercise intervention is important due to the scheduling of medical assessments that may occur throughout the day for these hospitalized patients. Evidence suggests that by improving physical and emotional health through a bed-rest exercise program during a hospitalized pregnancy may help the individual resume demanding daily activity in the postpartum period and improve quality of life once birth has occurred. More research is necessary to improve the health of those individuals who are hospitalized during pregnancy, with follow up and support into the postpartum period.

Prevalence of Depression or Anxiety During Antepartum Hospitalizations for Obstetric Complications: A Systematic Review and Meta-analysis

OBJECTIVE

To systematically review the prevalence of antenatal depression and anxiety in women hospitalized in an antepartum unit for obstetric complications.

DATA SOURCES

We searched PubMed, EMBASE, CINAHL, PsycINFO, and ClinicalTrials.gov for English-language articles published from database inception through March 2020.

METHODS OF STUDY SELECTION

We included cross-sectional, cohort, case-control, quasi-experimental, and randomized controlled studies from any country that reported the proportion of pregnant women with an elevated depression or anxiety screening scale or diagnostic interview during antepartum hospitalization of any duration and at any gestational age.

TABULATION, INTEGRATION, AND RESULTS

We identified 8,799 articles and reviewed 79, 39 of which were included in a systematic review and 18 in meta-analysis of the primary outcome. Two raters independently assessed quality of individual studies using a 14-question tool. A random effects meta-analysis model was used to estimate prevalence and 95% CI of depression or anxiety. Heterogeneity was examined with the I2 test, and funnel plots were used to assess publication bias. After meta-analysis, the estimated prevalence of depression was 34% (95% CI 27-41%) and of anxiety 29% (95% CI 16-43%). There was expected substantial clinical and methodologic heterogeneity between studies that persisted even after planned a priori subgroup analyses and meta-regression. Even so, the direction of effect was consistent across studies. No publication bias was found.

CONCLUSION

The current meta-analysis suggests that one in three women hospitalized during pregnancy for obstetric complications report clinical levels of depression or anxiety symptoms, twice the reported prevalence of antenatal depression or anxiety in the general obstetric population.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO, CRD42020172111.

Maternal activity restriction to reduce preterm birth: Time to put this fallacy to bed

Activity restriction has traditionally been recommended to pregnant women, especially high-risk patients, to reduce preterm birth. However, there is no scientific evidence that bed-rest reduces preterm birth and, in many studies, women on bed-rest had higher rates of delivering preterm. Bed-rest in pregnancy is associated with significant physiological and psychosocial sequelae and reduced neonatal birth weight and be cannot be endorsed, even in women with a short cervix. The practice of prescribing bed-rest in pregnancy is outdated and should be abandoned.