Effects of Water Beds on the Sleep and Motility of Theophylline-Treated Preterm Infants

PEDIATRICS ◽  
1982 ◽  
Vol 70 (6) ◽  
pp. 864-869
Author(s):  
Anneliese F. Korner ◽  
Ellen M. Ruppel ◽  
Jong M. Rho
Keyword(s):  
Preterm Infants ◽  
Behavioral Differences ◽  
Active Sleep ◽  
State Changes ◽  
And Control

With evidence accumulating that the sleep of infants receiving theophylline is sharply reduced, this study tested whether water bed flotation could increase the sleep and attenuate the restlessness of preterm infants treated with theophylline for apnea. Seventeen preterm infants served as their own control, off and on gently oscillating water beds. The infants' sleep and motility were assessed on days 3 and 4 during the experimental and control conditions. While on the water bed, the infants had significantly more quiet and active sleep, shorter sleep latencies, fewer state changes, less restlessness during sleep, less waking activity, and fewer jittery and unsmooth movements. Reductions in wakefulness and state changes on the water bed were significantly greater, the longer the infants were receiving theophylline, but they were unrelated to theophylline levels which, for the group as a whole, were relatively low. Residual apnea was not reduced on the water bed. Although water bed flotation significantly improved the infants' sleep and motility, stable behavioral differences among the infants were observed across the experimental and control conditions.

Direct measurement of the energy expenditure of physical activity in preterm infants

1998 ◽  
Vol 85 (1) ◽  
pp. 223-230 ◽  
Author(s):  
Patti J. Thureen ◽  
Robert E. Phillips ◽  
Karen A. Baron ◽  
Mark P. DeMarie ◽  
William W. Hay
Keyword(s):  
Physical Activity ◽  
Energy Expenditure ◽  
Preterm Infants ◽  
Direct Measurement ◽  
Muscle Activity ◽  
Energy Cost ◽  
Force Plate ◽  
Total Energy Expenditure ◽  
Active Sleep ◽  
Quiet Sleep

The energy cost of physical activity (EEA) has been estimated to account for 5–17% of total energy expenditure (TEE) in neonates. To directly measure EEA, a force plate was developed and validated to measure work outputs ranging from 0.3 to 40 kcal ⋅ kg−1 ⋅ day−1. By use of this force plate plus indirect calorimetry, TEE and EEA were measured and correlated with five activity states in 24 infants with gestational age of 31.6 ± 0.5 (SE) wk and postnatal age of 24.8 ± 3.7 days. TEE and EEA were 69.2 ± 1.5 and 2.4 ± 0.2 kcal ⋅ kg−1 ⋅ day−1, respectively. EEA per state was 0.5 ± 0.0 (quiet sleep), 2.4 ± 0.2 (active sleep), 2.8 ± 0.4 (quiet awake), 7.5 ± 0.8 (active awake), and 15.1 ± 2.3 (crying) kcal ⋅ kg−1 ⋅ day−1. This provides the first direct measurement of the contribution of physical activity to TEE in preterm infants and will enable measurement of caloric expenditure from muscle activity in various disease conditions and development of nursing strategies to minimize unnecessary energy losses.

scholarly journals Placental Vascular Obstructive Lesions: Risk Factor for Developing Necrotizing Enterocolitis

2010 ◽  
Vol 2010 ◽  
pp. 1-7 ◽  
Author(s):  
Laure Dix ◽  
Matthias Roth-Kleiner ◽  
Maria-Chiara Osterheld
Keyword(s):  
Risk Factor ◽  
Preterm Infants ◽  
Necrotizing Enterocolitis ◽  
Premature Infants ◽  
Strong Association ◽  
Age Groups ◽  
Control Group ◽  
Age Group ◽  
Significant Difference ◽  
And Control

Necrotizing enterocolitis (NEC) is a severe neonatal disease affecting particularly preterm infants. Its exact pathogenesis still remains unknown. In this study, we have compared the prevalence of vascular obstructive lesions in placentae of premature newborns which developed NEC and of a control group. We further compared separately the findings of placentae of infants of less than 30 weeks of gestation, the age group in which NEC occurs most frequently. We found signs of fetal vascular obstructive lesions in 65% of the placentae of preterm patients developing NEC, compared to only 17% of the placentae of preterm patients in the control group. In the age groups below 30 weeks of gestation, 58.5% of placentae of later NEC patients presented such lesions compared to 24.5% in the control group. The significant difference between NEC and control group suggests a strong association between fetal vascular obstructive lesions and NEC. Therefore, we propose that fetal vascular obstructive lesions might be considered as a risk factor for the development of NEC in premature infants.

The role of swallowing during active sleep in the clearance of reflux in term and preterm infants

2000 ◽  
Vol 137 (4) ◽  
pp. 545-548 ◽  
Author(s):  
Heather E. Jeffery ◽  
Danielle Ius ◽  
Megan Page
Keyword(s):  
Preterm Infants ◽  
Active Sleep

scholarly journals Time to regain birth weight - a marker to predict the severity of retinopathy of prematurity?

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Ajay Anvekar ◽  
Sam Athikarisamy ◽  
Shripada Rao ◽  
Andy Gill ◽  
Elizabeth Nathan ◽  
...  
Keyword(s):  
Preterm Infants ◽  
Gestational Age ◽  
Retinopathy Of Prematurity ◽  
Oxygen Therapy ◽  
Control Groups ◽  
Gestational Age At Birth ◽  
And Control ◽  
Type 1 Rop ◽  
Age At Birth

Abstract Background Poor weight gain in the first few weeks of life has been studied as a predictor of retinopathy of prematurity (ROP). Our aim was to assess whether time taken to regain birthweight (BW) be used as an additional marker to identify infants with type 1 ROP. Methods In this retrospective study, preterm infants (< 27 weeks gestational age at birth) born during the period from 1/1/2010–31/12/2015 at a tertiary neonatal intensive care unit in Australia were included. Twenty-seven preterm infants with Type 1 ROP were identified. Controls (No ROP or ROP other than type 1) were matched with cases on gestational age at birth and BW (1:4 ratio). Data were collected from the database and medical records. Results The median (IQR) gestational age for Type 1 ROP and control groups were 24 (24–26) and 25 (24–26) weeks respectively and median (IQR) BW for Type 1 ROP and control groups were 675 (635–810) and 773 (666–884) grams respectively. Preterm infants with Type 1 ROP were more likely to be small for gestational age (SGA) (18.5% vs 3.7%, p = 0.015) and had increased weeks on oxygen therapy (median 11.9 vs 9.1, p = 0.028). Time to regain BW was longer in preterm infants with type 1 ROP than controls but did not reach statistical significance (median 9 vs 7 days, OR 1.08, 95% CI 1.00–1.17, p = 0.059) adjusted for SGA and duration of oxygen therapy. The area under the curve from the time to regain BW model with adjustment for SGA and duration of oxygen therapy was 0.73 (95% CI 0.62–0.83). Conclusion We hypothesize that time to regain BW has potential to aid prediction of Type 1 ROP and this warrants further investigation in a larger prospective study.

scholarly journals Long-Range But Not Short-Range Attraction of Male Aedes aegypti (Diptera: Culicidae) Mosquitoes to Humans

2021 ◽  
Author(s):  
Brogan A Amos ◽  
Ary A Hoffmann ◽  
Kyran M Staunton ◽  
Meng-Jia Lau ◽  
Thomas R Burkot ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Short Range ◽  
Human Subjects ◽  
Behavioral Differences ◽  
Baited Traps ◽  
Assay Design ◽  
And Control ◽  
Male Mosquito ◽  
Blood Meals ◽  
Host Cues

Abstract Female Aedes aegypti (Linnaeus) mosquitoes integrate multiple sensory cues to locate human hosts for blood meals. Although male Ae. aegypti swarm around and land on humans in nature to mate, direct evidence of attraction to humans is limited. Male mosquito attraction to human host cues is often undetectable in confined laboratory assays, leading to a misconception that male mosquitoes are not attracted to humans. We used semifield experiments to demonstrate robust attraction of male Ae. aegypti to humans. Human-baited traps captured up to 25% of released males within 15 min, whereas control traps without humans as bait failed to capture males. Rapid attraction to humans was further demonstrated through videography. Males swarmed around and landed on human subjects, with no activity recorded in paired unbaited controls. Finally, we confirm the lack of discernible male attraction to humans in small laboratory cages. Our experiments demonstrate that both male and female Ae. aegypti show attraction to humans, but with clear sex-specific behavioral differences at short-range. Male mosquito attraction to humans is likely to be important for mating success in wild populations and its basis should be further explored. Our results highlight the importance of arena size and assay design for mosquito behavioral research. A better understanding of host cues that attract males could help us to improve mosquito surveillance and control.

scholarly journals Effect of Assisted Exercise on Musculoskeletal System and Growth in Preterm Infants

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
H A Awad ◽  
M M Elganzoury ◽  
S S Emam ◽  
G I Gad ◽  
R A H Elfarrash ◽  
...  
Keyword(s):  
Physical Activity ◽  
Range Of Motion ◽  
Preterm Infants ◽  
Musculoskeletal System ◽  
Gestational Age ◽  
Exercise Group ◽  
Magnesium Concentration ◽  
Significant Difference ◽  
Physical Activity Programs ◽  
And Control

Abstract Background osteopenia of prematurity, also known as bone metabolic disorder, is one of the common diseases in very low birth weight (VLBW) prematurity. Aim of the Work the primary aim of this study was to assess whether physical activity programs in preterm infants improve bone mineralization as well as growth and reduce the risk of fractures. The secondary aim was to include other potential benefits in terms of length of hospital stay, weaning from mechanical ventilation, feeding tolerance and adverse events. Patients and Methods this study was conducted on 36 neonate, Preterm infants (gestational age &lt;33 completed weeks), body size appropriate for gestational age according to the growth curve, Postnatal age of ≥ 1 week with medically stable condition and favorable evolution that is presenting no associated diseases besides prematurity, tolerating enteral feeds of preterm formula at or above 100 kcal/kg/d. Methods the studied neonates were randomized into the physical exercise (n = 18) and control (n = 18) groups. Randomization was made by birth order. The studied neonates were subjected to full history taking, complete clinical assessment together with complete blood picture, C-reactive protein, serum Ca, Serum phosphorous concentration, Serum magnesium concentration. Serum alkaline phosphatase concentration, Serum Alanine Aminotransferase (ALT), Urinary calcium/phosphorous ratio. Babies admitted to NICU bathed, placed in incubator, attached to monitor. Infants in treatment and control groups received well defined interventions for the exercise group, systematic physical activity programs consisting of range-of-motion exercises with gentle compression, extension and flexion of all joints of both bilateral upper extremities; including the shoulder, elbow, and wrist and lower extremities; including the hip, knee and ankle, with a total of 12 joints Each activity was about 10 min a day and was carried out 5 times per week for 4 weeks. This program was started after 1 week of birth. Physical activity continued until discharge from hospital. Results the study demonstrated non significant difference in weight at enrollment (p = 0.516) which was turned into significant difference at end of the study as being higher among exercise group (p &lt; 0.001). In our study although there was increase in the length and head circumference (p &lt; 0.001) in the 2 groups no significant difference detected comparing them together. The control group had significantly lower serum phosphorus (p &lt; 0.001), higher urinary Ca/Po4 ratio (p &lt; 0.035) and higher ALP (p &lt; 0.005) compared to excerise group at the end of the exercising protocol. Conclusion our study has demonstrated that regular physical activity programs (range-of-motion exercises), after an initial period of stabilization, might provide a simple intervention for improving musculoskeletal system and skeletal growth in preterm infants. They may also promote general growth in preterm infants.

The Regulation of Sleep

2021 ◽  
Author(s):  
Craig Heller
Keyword(s):  
Eye Movement ◽  
Rem Sleep ◽  
Nrem Sleep ◽  
Control Mechanisms ◽  
Rapid Eye Movement ◽  
Sleep Regulation ◽  
Short Article ◽  
Feedback Information ◽  
State Changes ◽  
And Control

The words “regulation” and “control” have different meanings. A rich literature exists on the control mechanisms of sleep—the genomic, molecular, cellular, and circuit processes responsible for arousal state changes and characteristics. The regulation of sleep refers to functions and homeostatic maintenance of those functions. Much less is known about sleep regulation than sleep control, largely because functions of sleep are still unknown. Regulation requires information about the regulated variable that can be used as feedback information to achieve optimal levels. The circadian timing of sleep is regulated, and the feedback information is entraining stimuli such as the light–dark cycle. Sleep itself is homeostatically regulated, as evidenced by sleep deprivation experiments. Eletroenceophalography (EEG) slow-wave activity (SWA) is regulated, and it appears that adenosine is the major source of feedback information, and that fact indicates an energetic function for sleep. The last aspect of sleep regulation discussed in this short article is the non-rapid eye movement (NREM) and rapid eye movement (REM) sleep cycling. Evidence is discussed that supports the argument that NREM sleep is in a homeostatic relationship with wake, and REM sleep is in a homeostatic relationship with NREM sleep.

Apneic Spells and Sleep States in Preterm Infants

PEDIATRICS ◽  
1976 ◽  
Vol 57 (1) ◽  
pp. 142-147
Author(s):  
M. Gabriel ◽  
M. Albani ◽  
F. J. Schulte
Keyword(s):  
Nervous System ◽  
Eye Movement ◽  
Preterm Infants ◽  
Rem Sleep ◽  
Synaptic Connections ◽  
Spinal Motoneurons ◽  
Active Sleep ◽  
Quiet Sleep ◽  
Recording Technique ◽  
Polygraphic Recording

The incidence of apneic spells during different sleep states, active sleep, quiet sleep, and undifferentiated sleep was determined in eight preterm infants of 30 to 35 weeks' conceptional age, by means of a polygraphic recording technique. They were free of perinatal and postnatal complications other than apnea. During their active or rapid eye movement (REM) sleep they showed significantly more apneic episodes which were also longer lasting and they were accompanied by bradycardia of a greater severity. The organization of the immature nervous system with a preponderance of inhibitory synaptic connections and the additional inhibition of spinal motoneurons during REM sleep are likely to be the cause of apneic spells in otherwise "normal" preterm infants.

State Change in Preterm Infants in Response to Nursing Caregiving: Possible Gender Effects

2008 ◽  
Vol 27 (1) ◽  
pp. 15-22 ◽  
Author(s):  
Karen Thomas ◽  
Shao-Yu Tsai ◽  
Sara Brown
Keyword(s):  
Preterm Infants ◽  
State Regulation ◽  
Gender Effects ◽  
Outcome Variable ◽  
State Change ◽  
Video Recordings ◽  
Postmenstrual Age ◽  
Main Outcome Variable ◽  
State Changes ◽  
Wake State

Purpose:To describe the effect of nursing caregiving on infant sleep-wake states by gender in preterm infantsDesign:Descriptive measures at 34 weeks postmenstrual age and at dischargeSample:Twenty-two hospitalized preterm infantsMain Outcome Variable:Infant state and caregiving episodes were coded in 15-second intervals from video recordings of approximately three hours duration. Time plots of state and caregiving were analyzed visually to summarize spontaneous state changes and state change associated with caregiving.Results:Sleep and wake state distribution did not differ statistically by gender; however, the rate of state change in male infants was twice that of females (p=.012) at discharge. At discharge, male infants received approximately twice as many care episodes as females. At discharge, the rate of state change in response to caregiving in male infants was four times that of female infants (p=.026). Males exhibited a greater percentage of caregiving episodes related to state change than did females at discharge (p=.018). Findings suggest further exploration of possible gender differences in state regulation and state change in response to caregiving.

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