Exposure to Non-Steady-State Oxygen Is Reflected in Changes to Arterial Blood Gas Values, Prefrontal Cortical Activity, and Systemic Cytokine Levels.

Onboard oxygen-generating systems (OBOGSs) provide increased inspired oxygen (FiO2) to mitigate the risk of neurologic injury in high altitude aviators. OBOGSs can deliver highly variable oxygen concentrations oscillating around a predetermined FiO2 set point, even when the aircraft cabin altitude is relatively stable. Steady-state exposure to 100% FiO2 evokes neurovascular vasoconstriction, diminished cerebral perfusion, and altered electroencephalographic activity. Whether non-steady-state FiO2 exposure leads to similar outcomes is unknown. This study characterized the physiologic responses to steady-state and non-steady-state FiO2 during normobaric and hypobaric environmental pressures emulating cockpit pressures within tactical aircraft. The participants received an indwelling radial arterial catheter while exposed to steady-state or non-steady-state FiO2 levels oscillating ± 15% of prescribed set points in a hypobaric chamber. Steady-state exposure to 21% FiO2 during normobaria produced arterial blood gas values within the anticipated ranges. Exposure to non-steady-state FiO2 led to PaO2 levels higher upon cessation of non-steady-state FiO2 than when measured during steady-state exposure. This pattern was consistent across all FiO2 ranges, at each barometric condition. Prefrontal cortical activation during cognitive testing was lower following exposure to non-steady-state FiO2 >50% and <100% during both normobaria and hypobaria of 494 mmHg. The serum analyte levels (IL-6, IP-10, MCP-1, MDC, IL-15, and VEGF-D) increased 48 h following the exposures. We found non-steady-state FiO2 levels >50% reduced prefrontal cortical brain activation during the cognitive challenge, consistent with an evoked pattern of neurovascular constriction and dilation.

Mothers' Decision Making Concerning Safe Sleep for Preterm Infants: What Are the Influencing Factors?

BACKGROUND: Parental decisions regarding infant sleep practices vary widely, resulting in a lack of adherence to the American Academy of Pediatrics safe sleep recommendations (SSR) and consequently an increased risk of sudden infant death syndrome (SIDS). Preterm infants are among those at a highest risk for SIDS, yet few studies focus on parental decision-making surrounding sleep practices for preterm infants. PURPOSE: The purpose of this study was to identify factors influencing decisions concerning infant sleep practices of mothers of preterm infants. METHODS: This study used a mixed-methods design. Recruitment was through social media messaging by 2 parent support organizations. An online survey was used to assess factors influencing mothers' decisions regarding sleep practices for preterm infants. FINDINGS/RESULTS: Survey participants (n = 98) were from across the United States. Mothers of preterm infants (mean gestational age at birth = 29.42 weeks) most often reported positioning infants on their back to sleep (92.3%) and a low (15.4%) use of a pacifier at sleep time. Three themes emerged for the decisions made: adherence to SSR; nonadherence to SSR; and infant-guided decisions. Regardless of the decision, mothers indicated that anxiety over the infant's well-being resulted in a need for sleep practices that facilitated close monitoring of the infant. IMPLICATIONS FOR PRACTICE AND RESEARCH: The findings of this study indicate the need for understanding the underlying anxiety preventing mothers from adhering to SSR despite knowing them, along with tailoring infant sleep messaging and education to improve safety of sleep practices for preterm infants. Research is needed to examine decision making in more diverse populations.

Care Coordination for Children with Special Healthcare Needs Anticipating Transition: A Program Evaluation.

PURPOSE: Nearly 20% of U.S. children have special healthcare needs (CSHCN). Difficulties experienced with navigating the array of services for these children has highlighted the value of care coordination to improve care, reduce costs and increase satisfaction. This study evaluated the services delivered within a care coordination program at a transition consultation center for CSHCN. It also compared the advancement of youth by age group toward graduation criteria. DESIGN AND METHODS: Using a program evaluation method, data were collected via a retrospective chart review. The convenience sample included clinical records from 100 patients aged 11-22 who had a chronic disease or disability. RESULTS: The comparison of services for those with diagnoses of autism spectrum disorder, cerebral palsy and Down syndrome were uniformly high in supporting primary care and health care financing. Medicaid waiver assistance was provided more frequently to younger adolescents while older adolescents more commonly received support in all other graduation criteria, including primary and specialty care, healthcare financing and decision-making supports. CONCLUSIONS: Youth served in a transition care coordination program receive a high volume and broad array of services. There are some variations in the types of services by diagnosis and level of support need. Older youth show greater advancement toward graduation criteria. PRACTICE IMPLICATIONS: This in-depth chart review provides a valuable description of the activities of care coordinators serving CSHCN enduring transition. It enables development of targeted strategies for building care coordination programming and sets an example for the design of future research studies on this topic.

Neurovascular and cortical responses to hyperoxia: enhanced cognition and electroencephalographic activity despite reduced perfusion.

KEY POINTS: Extreme aviation is accompanied by ever-present risks of hypobaric hypoxia and decompression sickness. Neuroprotection against those hazards is conferred through fractional inspired oxygen ( FI,O2 ) concentrations of 60-100% (hyperoxia). Hyperoxia reduces global cerebral perfusion (gCBF), increases reactive oxygen species within the brain and leads to cell death within the hippocampus. However, an understanding of hyperoxia's effect on cortical activity and concomitant levels of cognitive performance is lacking. This limits our understanding of whether hyperoxia could lower the brain's threshold of tolerance to physiological stressors inherent to extreme aviation, such as high gravitational forces. This study aimed to quantify the impact of hyperoxia upon global cerebral perfusion (gCBF), cognitive performance and cortical electroencephalography (EEG). Hyperoxia evoked a rapid reduction in gCBF, yet cognitive performance and vigilance were enhanced. EEG measurements revealed enhanced alpha power, suggesting less desynchrony, within the cortical temporal regions. Collectively, this work suggests hyperoxia-induced brain hypoperfusion is accompanied by enhanced cognitive processing and cortical arousal. ABSTRACT: Extreme aviators continually inspire hyperoxic gas to mitigate risk of hypoxia and decompression injury. This neuroprotection carries a physiological cost: reduced cerebral perfusion (CBF). As reduced CBF may increase vulnerability to ever-present physiological challenges during extreme aviation, we defined the magnitude and duration of hyperoxia-induced changes in CBF, cortical electrical activity and cognition in 30 healthy males and females. Magnetic resonance imaging with pulsed arterial spin labelling provided serial measurements of global CBF (gCBF), first during exposure to 21% inspired oxygen ( FI,O2 ) followed by a 30-min exposure to 100% FI,O2 . High-density EEG facilitated characterization of cortical activity during assessment of cognitive performance, also measured during exposure to 21% and 100% FI,O2 . Acid-base physiology was measured with arterial blood gases. We found that exposure to 100% FI,O2 reduced gCBF to 63% of baseline values across all participants. Cognitive performance testing at 21% FI,O2 was accompanied by increased theta and beta power with decreased alpha power across multiple cortical areas. During cognitive testing at 100% FI,O2 , alpha activity was less desynchronized within the temporal regions than at 21% FI,O2 . The collective hyperoxia-induced changes in gCBF, cognitive performance and EEG were similar across observed partial pressures of arterial oxygen ( PaO2 ), which ranged between 276-548 mmHg, and partial pressures of arterial carbon dioxide ( PaCO2 ), which ranged between 34-50 mmHg. Sex did not influence gCBF response to 100% FI,O2 . Our findings suggest hyperoxia-induced reductions in gCBF evoke enhanced levels of cortical arousal and cognitive processing, similar to those occurring during a perceived threat.

Clinical Outcomes in Preterm Infants Following Institution of a Delayed Umbilical Cord Clamping Practice Change.

BACKGROUND: Evidence supports a significant reduction in the incidence of intraventricular hemorrhage (IVH) in preterm infants receiving delayed umbilical cord clamping (DCC). PURPOSE: This study evaluated clinical feasibility, efficacy, and safety outcomes in preterm infants (<36 weeks' gestational age) who received DCC following a practice change implementation intended to reduce the incidence of IVH. METHODS: Infants receiving DCC (45-60 seconds) were compared with a sample of infants receiving immediate umbilical cord clamping (<15 seconds) in a retrospective chart review (N = 354). The primary outcome measure was the prevalence of IVH. Secondary safety outcome measures of 1- and 5-minute Apgar scores, axillary temperature on neonatal intensive care unit admission, and initial 24-hour bilirubin level were also evaluated. Gestational age was examined for its effect on outcomes. RESULTS: Although the small number of infants with IVH precluded the ability to detect statistical significance, our raw data suggest DCC is efficacious in reducing the risk for IVH. For infants 29 or less weeks' gestational age, admission axillary temperature was significantly higher in those who received DCC. No differences were found in 1- and 5-minute Apgar scores, 24-hour bilirubin level, or hematocrit level between the two groups. Infants more than 29 weeks' gestational age who received DCC had significantly higher 1-minute Apgar scores, temperature, and 24-hour bilirubin level. IMPLICATIONS FOR PRACTICE: Clinicians should advocate for the implementation of DCC as part of the resuscitative process for preterm neonates. IMPLICATIONS FOR RESEARCH: Future studies are needed to evaluate the effect of DCC on other clinical outcomes and to investigate umbilical cord milking as an alternative approach to DCC.

Caring about Preemies' Safe Sleep (CaPSS): An Educational Program to Improve Adherence to Safe Sleep Recommendations by Mothers of Preterm Infants.

Preterm infants born before 37 weeks' gestation die of sudden infant death syndrome (SIDS) at a rate more than double that of term infants. There is a need for SIDS prevention programs tailored to the specific needs of parents of high-risk infants. The purpose of this study was to pilot test an online educational module addressing SIDS risk-reduction recommendations (RRRs) for parents of preterm infants. This study was conducted in a 44-bed transitional care unit at a level IV NICU in the Midwest. A repeated-measures design was used. Two weeks before discharge, mothers completed a survey, addressing knowledge and plans for caring for their baby at home. Mothers then viewed the 5-section Caring about Preemies' Safe Sleep (CaPSS) education module and completed the postmodule evaluation. A discharge survey was completed 4 weeks postdischarge. Fifteen mothers, mean age 26.4 years, participated; 8 (53%) returned the postdischarge survey. Module evaluation rated clarity and completeness of information high. Mothers' ratings of SIDS knowledge were significantly higher after viewing the module (P = .000) and 4 weeks after discharge home (P = .012). Mothers found the use of a pacifier at sleep times to be new information and changed their plans for caring for their infant, with 28.6% of mothers always offering a pacifier before sleep after discharge compared with the 6.7% who had planned to do this before discharge. However, only 71% of infants slept in parents' room after discharge and only 41% were receiving at least some breast milk, which are not consistent with SIDS RRRs.

Adherence to Safe Sleep Recommendations by Families With Higher-order Multiples.

BACKGROUND: More than 95% of higher-order multiples are born preterm and more than 90% are low birth weight, making this group of infants especially vulnerable to sudden infant death syndrome (SIDS). Emerging evidence suggests that families with twins face challenges adhering to the American Academy of Pediatrics (AAP) recommendations to reduce SIDS risks. Adherence to the AAP recommendations in families with higher-order multiples has not been described. PURPOSE: This study describes SIDS risk reduction infant care practices for higher-order multiples during the first year of life. METHODS: Mothers caring for higher-order multiple-birth infants were recruited from an online support group. An online survey was used to assess infant care practices when the infants were first brought home from the hospital as well as at the time of the survey. RESULTS: Ten mothers of triplets and 4 mothers of quadruplets responded. Less than 80% of the mothers practiced "back to sleep" immediately postdischarge. Supine sleep positioning decreased over time, particularly during daytime naps. Only 50% of the infants shared the parents' bedroom and approximately 30% bed-shared with their siblings. Sleep-time pacifier use was low. IMPLICATIONS FOR PRACTICE: Safe sleep education must include specific questions regarding home sleeping arrangements, encouragement of breast milk feedings, supine positioning, and pacifier use at every sleep for higher-order multiple infants well before discharge in order for parents to plan a safe sleep environment at home. IMPLICATIONS FOR RESEARCH: Prospective studies to identify barriers and facilitators can inform future strategies supporting adherence to safe sleep practices for higher-order multiple infants.

Safe Sleep Infant Care Practices Reported by Mothers of Twins.

BACKGROUND: The high prevalence of prematurity and low birth-weight places twin infants at increased risk for sudden unexpected infant death (SUID) and/or sudden infant death syndrome (SIDS). Risk for these SUID and SIDS is affected by a combination of nonmodifiable intrinsic risk factors and modifiable extrinsic stressors including infant care practices related to sleep. Although adherence to the full scope of American Academy of Pediatrics (AAP) 2011 recommendations is intended to decrease risk, these recommendations are aimed at singleton infants and may require tailoring for families with multiple infants. PURPOSE: The study describes infant care practices reported by mothers of twins in the first 6 months postpartum. METHODS: Mothers caring for twin infants (N = 35) were surveyed online both longitudinally (at 2, 8, 16, and 24 weeks after infant hospital discharge) and cross-sectionally. AAP recommendations (2011) guided survey content. RESULTS: The degree of adherence to AAP recommendations varied over time. For example, mothers of twins reported 100% adherence to placing twins supine for sleep initially, but many reported putting babies on their stomachs for naps as twins became older. Sharing a parent's bedroom decreased over time as did frequency of crib sharing. Fewer than half of mothers offered a pacifier most or all of the time for sleep. IMPLICATIONS FOR PRACTICE: Opportunities exist for development of an educational program geared specifically for postpartum parents of twins. IMPLICATIONS FOR RESEARCH: Barriers affecting adherence to AAP recommendations and effectiveness of educational programs addressing needs of this unique population need further exploration.

Neonatal nurses' beliefs, knowledge, and practices in relation to sudden infant death syndrome risk-reduction recommendations.

BACKGROUND: Sudden infant death syndrome (SIDS) remains the third leading cause of infant death in the United States and the leading cause of death beyond 1 month of age. In 2011, the American Academy of Pediatrics (AAP) released the newest SIDS risk-reduction recommendations, which address healthcare providers in neonatal intensive care units (NICUs). Little is known about neonatal nurses' SIDS prevention strategies since the release of these newest recommendations. PURPOSE: To assess neonatal nurses' beliefs, knowledge, and practices regarding SIDS prevention in both the NICU and step-down transitional care unit (TCU). METHODS: A prospective-descriptive design was used. The 33-item SIDS Risk-Reduction Questionnaire was distributed to a convenience sample of nurses in a level III NICU/TCU in the Midwest. RESULTS: Two hundred questionnaires were distributed; 96 (48%) were returned completed. Fifty-three percent of nurses strongly agreed that SIDS recommendations make a difference in preventing SIDS and 20% strongly believed that parents model SIDS prevention practices employed by staff. A majority of nurses correctly identified 2011 recommendations. Sixty-three percent of nurses often or always gave parents verbal information and 28% often or always gave parents written information regarding SIDS. Differences were seen between NICU and TCU nurses concerning beliefs and practices, suggesting that TCU nurses more consistently follow SIDS recommendations. IMPLICATIONS FOR PRACTICE: Increased neonatal nursing and parental education regarding SIDS prevention and updated hospital policies promoting safe sleep are paramount. IMPLICATIONS FOR RESEARCH: Larger multicenter studies in level II/III NICUs are needed to provide further data on SIDS attitudes and practices.

Web recruitment and internet use and preferences reported by women with postpartum depression after pregnancy complications.

Nearly one million women each year have pregnancy complications that cause antepartum and postpartum anxiety and depression. This exploratory study determined 1) feasibility of using social media to recruit women with depressive symptoms following high risk pregnancy, 2) women's barriers to treatment, 3) use of online resources for assistance with PPD, and 4) preferences for internet treatment. Among a national sample of 53 women, nearly 70% had major depression. Common barriers were lack of time and stigma. Over 90% of women would use the internet to learn coping strategies for PPD. Women expressed interest in web-based PPD treatment and identified desired characteristics of an intervention.

Evaluation of the Relationship of Sleep Disturbances to Severity and Common Behaviors in Autism Spectrum Disorder.

Background: Autism spectrum disorder (ASD) is one of the most puzzling disorders of childhood. Recent research of comorbidities that accompany ASD and are commonly attributed to the diagnosis, indicate that they may contribute to the severity of behavioral symptoms of the disorder.Disturbed sleep in all children can decrease cognition, decrease focus, increase performance problems, and alter mood and behavior. Children with ASD experience an increased sensitivity to disturbed sleep that may increase the severity of the disorder. Disturbed sleep patterns, such as increased sleep latency, nighttime waking and early arousal, have been identified in up to 80% of children with ASD. This study explored the relationship of disturbed sleep and the severity of the core ASD symptoms. Methods: Actigraphy and an accompanying sleep diary captured disturbed sleep patterns in 24 children, ages 6-12, with ASD. Participants wore a GT3X actigraphy monitor for 7 nights to collect data on patterns of disturbed sleep. Parents completed a sleep diary and the Autism Spectrum Rating Scale (ASRS) questionnaire.A descriptive analysis was used to report the characteristics of nighttime sleep and sleep efficiency as well as sleep disturbances. Pearson's r determined the relationships between the number of sleep disturbances and the severity of ASD behavioral scores and diagnostic severity (determined by the ASRS). Results: Of the 24 study participants, almost 92% had one or more sleep disturbances. A positive correlation was present between the number of sleep disturbances and the severity of delays in social and communication symptoms. A moderate effect size was found between the number of sleep disturbances and unusual behaviors in ASD suggests a possible, unanticipated, inverse relationship. Conclusions: Exploring the relationship of disturbed sleep to behavior and symptom severity in children with ASD can provide an understanding of how poor sleep influences ASD symptoms. This study identified distinct differences in ASD symptom severity between and within individual participants and found unique, and unexpected, symptom patterns. This finding supports the need, in research and treatment, to identify comorbidities and symptoms that contribute to individual behavioral profiles and phenotypes of the disorder.

Utilization of Maternal Healthcare Services among Adolescent Mothers in Indonesia.

Providing maternal healthcare services is one of the strategies to decrease maternal mortality. Despite the availability of healthcare services, research investigating the utilization of healthcare services for adolescent mothers in Indonesia is still limited. This study aimed to examine the utilization of maternal healthcare services and its determinants among adolescent mothers in Indonesia. Secondary data analysis was performed using the Indonesia Demographic and Health Survey 2017. Four hundred and sixteen adolescent mothers aged 15-19 years were included in the data analysis of frequency of antenatal care (ANC) visits and place of delivery (home/traditional birth vs. hospital/birth center) represented the utilization of maternal healthcare services. Approximately 7% of the participants were 16 years of age or younger, and over half lived in rural areas. The majority (93%) were having their first baby, one-fourth of the adolescent mothers had fewer than four ANC visits and 33.5% chose a traditional place for childbirth. Pregnancy fatigue was a significant determinant of both antenatal care and the place of delivery. Older age (OR 2.43; 95% CI 1.12-5.29), low income (OR 2.01; 95% CI 1.00-3.74), pregnancy complications of fever (OR 2.10; 95% CI 1.31-3.36), fetal malposition (OR 2.01; 95% CI1.19-3.38), and fatigue (OR 3.63; 95% CI 1.27-10.38) were significantly related to four or more ANC visits. Maternal education (OR 2.14; 95% CI 1.35-3.38), paternal education (OR 1.62; 95% CI 1.02-2.57), income level (OR 2.06; 95% CI 1.12-3.79), insurance coverage (OR 1.68; 95% CI 1.11-2.53), and presence of pregnancy complications such as fever (OR 2.03; 95% CI 1.33-3.10), convulsion (OR 7.74; 95% CI 1.81-32.98), swollen limbs (OR 11.37; 95% CI 1.51-85.45), and fatigue (OR 3.65; 95% CI 1.50-8.85) were significantly related to the place of delivery. Utilization of maternal healthcare services among adolescent mothers was determined by not only socioeconomic factors but also pregnancy complications. These factors should be considered to improve the accessibility, availability, and affordability of healthcare utilization among pregnant adolescents.

Sleeping Arrangements in Families with Twins.

This paper describes home sleeping arrangements used by parents of twins and investigates whether room sharing (twins in the same room as parents) or cobedding (crib-sharing between twins) influences parental night time sleep duration or sleep quality. A secondary analysis of data obtained from a longitudinal study of sleep in 104 families with twins was undertaken. Over 65% of twins were cobedded at 4 weeks; this decreased to approximately 42% by 13 weeks of age. Approximately 64% of families practiced room sharing at 4 weeks, this decreased to approximately 40% by 13 weeks of age. Mothers and fathers who both room shared and cobedded their twins at 9 weeks of age were most likely to experience restricted sleep duration when compared to other sleeping arrangements. Results suggest that parents of twins may not be following the most recent AAP recommendations regarding safe infant sleep for multiple birth infants.

Characterizing the Dose Response of Hyperoxia with Brain Perfusion.

BACKGROUND: Tactical aviators require administration of enhanced inspired oxygen concentrations (hyperoxia) to reduce risk of hypobaric hypoxia and decompression injuries. Hyperoxia is not without consequence; it reduces cerebral perfusion (CBF). Characterizing the relationship between FIO2 and CBF is necessary to establish FIO2 levels that do not reduce CBF yet are sufficient to mitigate risk of in-flight physiological stressors. To achieve that goal, this study's objective was to determine whether a dose-response relationship exists between FIO2 and CBF and, if so, the FIO2 at which CBF significantly declines.METHODS: Healthy male and female subjects (N = 26) were randomized to receive either low dose FIO2 of 30%, 40%, 50%, and 100% (Arm 1) or high dose FIO2 of 60%, 70%, 80%, and 100% (Arm 2), followed by a return to 21% for both groups. Subjects were placed within a 3-Tesla MRI scanner equipped with pseudocontinuous arterial spin labeling software (pCASL) to measure CBF. Baseline CBF measurements were obtained during exposure to 21% FIO2, with subsequent CBF measurements obtained at each predetermined FIO2 level.RESULTS: Baseline CBF did not differ between subjects in Arm 1 and Arm 2. Low dose FIO2 ≤ 50% did not affect CBF. In contrast, high dose FIO2 ≥ 60% significantly reduced CBF. Exposure to 100% FIO2 led to similar reductions of CBF for subjects in both Arm 1 and Arm 2.DISCUSSION: The neurovascular system appears to respond to increasing FIO2 levels in a dose dependent manner, with significant reductions in CBF with FIO2 exposures ≥ 60%.Damato EG, Fillioe SJ, Vannix IS, Norton LK, Margevicius SP, Beebe JL, Decker MJ. Characterizing the dose response of hyperoxia with brain perfusion. Aerosp Med Hum Perform. 2022; 93(6):493-498.

Increased Serum Levels of Proinflammatory Cytokines Are Accompanied by Fatigue in Military T-6A Texan II Instructor Pilots.

Tactical aviation imposes unprecedented physical challenges including repetitive exposure to hypergravity, hyperoxia, increased work of breathing, and profound cognitive workloads. Each stressor evokes outcomes ranging from musculoskeletal duress and atelectasis to physical and cognitive fatigue, the latter among the foremost threats to aviators. Whereas sleep loss is traditionally considered the primary cause of fatigue in aviators, converging experimental, observational, and medical studies have identified biochemical mechanisms promoting onset of fatigue. Those mechanisms, which fundamentally differ from sleep loss, revolve around increased proinflammatory cytokines, produced and released in response to tissue injury, chronic inflammatory disorders, allergens, or physical duress. This study's objective was to inform our understanding of potential relationships between serum levels of proinflammatory cytokines and onset of fatigue within a cohort of aviators who experience multiple high-performance sorties on a daily basis. Methods: Active duty and reservist T-6A Texan II instructor pilots were studied on three separate days across their week-long flying schedule. Data collected included a physical assessment, subjective fatigue levels, venous blood samples for measures of chemistry and serum analytes, and urine samples for specific gravity. Results: Twenty-three persons were studied, of which 22 fulfilled minimum study requirements of completing two sorties. The study cohort was comprised of primarily males, age 37.95 ± 4.73 years with a BMI of 26.63 ± 3.15 kg/m2. Of 37 measurable serum analytes, 20 differed significantly (p < 0.05) between baseline values with those measured at the study endpoint. Thirteen of the aviators reported increased fatigue scores across their flying schedule whereas nine did not. Eleven blood serum analytes were associated with increasing levels of fatigue. Discussion: Fatigue in aviators has been attributed almost solely to sleep loss, nocturnal sorties, or disrupted circadian rhythmicity. In contrast, our study findings suggest an alternative mechanism that can promote onset of fatigue: increased blood levels of proinflammatory cytokines. Specific mechanisms triggering synthesis and release of those cytokines and other analytes are yet to be determined. However, their expression patterns suggest responses to both chronic and acute inflammation, hyperoxia, or bronchopulmonary responses to inspiration of dry gas, positive airway pressure, or perhaps atelectasis.

Sleep pattern gender differences and fragmentation in postpartum parents of twins.

OBJECTIVE: Parents of newborn twins are at risk for both shortened sleep duration and sleep discontinuity. The purpose of this study was to characterize weekday and weekend sleep duration, sleep continuity, and awakenings in both mothers and fathers of newborn twins during the first 3 months at home. MATERIAL AND METHODS: Sleep-wake parameters were assessed at two time points using self-report diaries and actigraphy in 75 families with newborn twins. To assess sleep on weekdays and weekends with minimal subject burden, actigraphy recordings of both parents commenced at 9:00 p.m. Saturday and terminated at 9:00 p.m. Tuesday. RESULTS: Mean sleep duration over 24 hours for parents of twins ranged between 6.7 and 7.5 hours during the first 3 months postpartum and did not significantly differ on weekdays or weekends for mothers. Weekend sleep was more fragmented for fathers at both one month and three months with more awakenings, compared to weekday sleep. Mothers had more fragmented night sleep compared to fathers at one month. In contrast, at three months postpartum fathers had shorter total sleep time and night sleep time, but fewer night awakenings on weekdays than mothers. No differences were observed in weekend sleep duration or sleep patterns between mothers and fathers at three months. DISCUSSION: Consolidated sleep periods for both parents averages three hours or less during the first three months postpartum and sleep for both parents is fragmented. In families with newborn twins, the extent of sleep disruption for mothers and fathers is similar.

Correlates of negative and positive mood state in mothers of twins.

Relationships between parenting distress, social support, and sense of competence and negative and positive maternal mood were assessed in 162 mothers with twins younger than 2 years. Women with lower satisfaction scores on the sense of competence scale reported higher negative mood (adjusted R(2) = 21.7%, p < .001). Women with lower parenting distress and higher efficacy scores on the sense of competence scale reported higher positive mood (adjusted R(2) = 39.4%, p < .001). Neither instrumental nor subjective social support contributed to variance in maternal mood. Interventions should be aimed at decreasing parenting distress and increasing sense of competence for mothers of twins.

Strategies used by parents of twins to obtain sleep.

Empirical evidence on how parents of twins manage their need for sleep is nonexistent. Lay publications provide advice for parents of multiples, yet their recommendations have been neither studied for their frequency of use nor tested for their effectiveness. Parents of twins were interviewed by telephone regarding strategies they used to obtain sleep during the first 6 months postbirth. Reported strategies were grouped into a priori categories suggested by the literature. Findings indicated that parents attempted various strategies to increase their sleep but disagreed on their effectiveness. Development and testing of a repertoire of effective strategies tailored for parents of twins are needed.

Multiple gestation: side effects of antepartum bed rest.

The birth rate for higher order multiples has dramatically increased in recent decades. Multiple gestation pregnancies are considered to be at high obstetric risk. Antepartum bed rest is often prescribed to offset complications despite the lack of evidence for its effectiveness in preventing complications. This longitudinal repeated-measures study identified side effects of antepartum bed rest treatment for 31 hospitalized women with twin or triplet gestation. Maternal weight gain and infant birth weight were recorded. Antepartum stressors were measured by the Antepartum Stressors Hospital Inventory, and depressive symptoms were measured by the Center for Epidemiologic Studies Depression Scale (CES-D). Antepartum and post-partum side effects of bed rest were also assessed by the Antepartum and Postpartum Symptom Checklists. The weekly rate of maternal weight gain during hospitalization was significantly less than recent recommendations for multiple gestation weight gain (t = - 2.14, p = .04). Infant birth weights were appropriate for gestational age. There were fewer than expected small-for-gestational-age infants. Concerns regarding family status and separation from family were the major antepartum stressors. Women reported a high number of symptoms during bed rest (M = 22), which did not significantly change across 2 weeks. CES-D scores for depressive symptoms were high on antepartum hospital admission. Postpartum symptoms were initially high but had significantly declined by 6 weeks: F(1, 27) = 15.68, p = .00. These findings suggest that interventions are needed to reduce antepartum maternal weight loss, stress, physiologic and psychosocial symptoms, and depressive symptoms, as well as reduce postpartum symptoms of maternal morbidity.