Stable Low Birthweight Infants Research Articles

Effect of Kangaroo Mother Care plus Touch Therapy versus Kangaroo Mother Care Alone on the Low-Birth-Weight Infant’s Growth and Physiologic Responses: Randomized Controlled Trial

Background. Kangaroo Mother Care (KMC) has facilitated infant growth and decreased morbidities and hospital stay. Adding touch therapy (TT) may potentiate the KMC benefits.
 Objective. To compare the effectiveness of KMC+TT versus KMC alone in improving anthropometric and physiologic parameters and decreasing morbidities and hospital stay in low birth weight (LBW) infants.
 Methods. Stable LBW infants (<2000 g) admitted in the KMC ward were randomized to either intervention (KMC+TT) or control (KMC only) group. The KMC+TT group underwent thrice daily touch therapy sessions until discharge.
 Results. A total of 50 infants were included in the study. Baseline characteristics between the two groups were comparable. There was a significant increase in weight gain (grams/kg/day) in the KMC+TT group compared to KMC only. Physiologic parameters like heart rate, respiratory rate, and temperature were significantly better in the KMC+TT group. More infants in the KMC only group were transferred to NICU care, while more KMC+TT infants went home against advice. Hospital stay was similar between the two groups.
 Conclusion. Touch therapy added to KMC is more effective than KMC alone in improving weight gain and physiologic parameters. It is associated with lower morbidities, although it did not affect the hospital stay.

Effectiveness of Kangaroo Mother Care in Intubated Preterm Neonates 28 to 36 Weeks Gestational Age, Weighing 600 to 2000 Grams at Birth: A Randomized Controlled Trial

Background. Kangaroo Mother Care (KMC) is the standard of care for stable low birth weight infants. Provision of KMC to intubated preterm infants may also be beneficial, but strong evidence is still lacking.
 Objective. To determine the effectiveness of KMC in decreasing mortality among intubated preterm neonates.
 Study Design. This is a non-blinded, parallel, non-inferiority randomized controlled trial.
 Methodology. All intubated, preterm admissions, 28-36 weeks gestation, weighing 600-2000 grams, with respiratory distress were included. They were randomized to the intervention group who received KMC for 2-4 hours daily while intubated and the control group who received care inside an incubator. Participants’ physiologic status – before, during, and after the intervention – was recorded. The primary outcome was mortality. Secondary outcomes included comorbidities, days intubated, and hospital stay.
 Results. There was a total of 32 patients. The risk of dying in the KMC group (n=16) was significantly reduced by 78% (RR 0.22; 95% CI 0.06 - 0.87 p=0.009). The KMC patients were also less likely to have hypothermia, nosocomial pneumonia, NEC, and late-onset neonatal sepsis (p<0.05). The KMC group had higher blood sugar levels (110 vs. 58, p=0.001) and required fewer days of intubation (3.5 vs.1.5 days, p<0.000) compared to the control group. There was no difference in the duration of the hospital stay.
 Conclusion. KMC is effective in decreasing mortality among intubated preterm neonates. Other comorbidities and days of intubation were also reduced.

Effect of Community-Initiated Kangaroo Mother Care on Fecal Biomarkers of Gut Function in Low Birth Weight Infants in North India: A Randomized Clinical Trial.

This individually randomized trial was conducted to estimate the effect of promoting community-initiated Kangaroo Mother Care (ciKMC) in low birth weight (LBW) infants on gut inflammation and permeability. Participants included 200 stable LBW infants (weighing 1,500-2,250 g) in North India enrolled between May and October 2017. The ciKMC intervention included promotion and support of continuous skin-to-skin contact and exclusive breastfeeding through home visits. The mothers in the intervention arm were supported to practice ciKMC until 28 days after birth, i.e., the neonatal period, or till the baby wriggled out of KMC position, if earlier. Infant stool specimens were collected during the first week of birth, and within 1 week after end of the neonatal period. Concentrations of fecal neopterin (nmol/L), myeloperoxidase (ng/mL), and alpha-1-antitrypsin (μg/mL) were determined using ELISA, and composite enteric enteropathy (EE) score at the end of the neonatal period was calculated by principal component analysis. We did not find any substantial difference in means between the ciKMC and control arm infants in the log-transformed values of neopterin (0.03; 95% CI -0.15 to 0.21), myeloperoxidase (0.28; 95% CI -0.05 to 0.61) and alpha-1-antitrypsin (0.02; 95% CI -0.30 to 0.34). The mean (SD) composite EE score was 13.6 (7.5) in the ciKMC and 12.4 (8.3) in the control arm infants, and the adjusted difference in means was, 0.4 (95% CI -1.8 to 2.7). Our findings suggest that the promotion of ciKMC did not affect gut inflammation and permeability in our target population of LBW infants in North India.

Effect of Community-Initiated Kangaroo Mother Care on Postpartum Depressive Symptoms and Stress Among Mothers of Low-Birth-Weight Infants

Approximately 1 in 5 women in low- and middle-income countries experience postpartum depression, and the risk is higher among mothers of low-birth-weight (LBW) infants. Kangaroo mother care (KMC) is effective in improving survival among LBW infants, but the benefits of KMC for mothers are not well described. To estimate the effects of community-initiated KMC (ciKMC) on maternal risk of moderate-to-severe postpartum depressive symptoms and on salivary cortisol concentration, a biomarker of stress. This was an unmasked, parallel-group, individually randomized clinical trial. Participants included 1950 mothers of stable LBW infants (weighing 1500-2250 g) in rural and semiurban low-income populations in North India enrolled between April 2017 and March 2018. Data analysis was performed from January to July 2020. Eligible participants were randomly assigned to the intervention or control group by block randomization. The mothers in the intervention group were supported to practice ciKMC until 28 days after birth or until the infant wriggled out of the KMC position (ie, was no longer staying in the KMC position). The intervention included promotion and support of skin-to-skin contact and exclusive breastfeeding through home visits. Postpartum depressive symptoms at the end of the neonatal period were measured using the Patient Health Questionnaire-9, with a score of 10 or higher used to identify moderate-to-severe depressive symptoms. Salivary cortisol concentration was measured in a subsample of 550 mothers before and after breastfeeding on day 28 after birth. Of the 1950 participants (mean [SD] age, 23 [3.5] years), outcome assessment was completed for 974 of 1047 participants (93%) in the intervention group and 852 of 903 participants (94%) in the control group. Sixty-four percent of participants (1175 of 1826 participants) belonged to the lowest 3 wealth quintiles. The proportion of mothers with moderate-to-severe postpartum depressive symptoms was 10.8% (95% CI, 8.9%-12.9%; 105 of 974 mothers) in the intervention group vs 13.6% (95% CI, 11.4%-16.1%; 116 of 852 mothers) in the control group. The adjusted relative risk of moderate-to-severe maternal postpartum depressive symptoms was 0.75 (95% CI, 0.59-0.96), or an efficacy of 25%. There was no difference in day-28 salivary cortisol concentration between the ciKMC and control group mothers before or after breastfeeding. The analysis estimated that supporting 36 mothers to perform KMC at home would prevent 1 mother from experiencing moderate-to-severe postpartum depressive symptoms. These findings suggest that ciKMC practice may substantially reduce the risk of moderate-to-severe maternal postpartum depressive symptoms. This evidence supports KMC as an intervention to be incorporated in essential newborn care programs in low- and middle-income settings. Clinical Trials Registry-India Identifier: CTRI/2017/04/008430.

Community initiated kangaroo mother care and early child development in low birth weight infants in India-a randomized controlled trial

BackgroundIn a randomized controlled trial (RCT) with 8402 stable low birthweight (LBW) infants, majority being late preterm or term small for gestational age, community-initiated KMC (ciKMC) showed a significant improvement in survival. However, the effect of ciKMC on neurodevelopment is unclear. This is important to elucidate as children born with low birth weight are at high risk of neurodevelopmental deficits. In the first 552 stable LBW infants enrolled in the above trial, we evaluated the effect of ciKMC on neurodevelopmental outcomes during infancy.MethodThis RCT was conducted among 552 stable LBW infants, majorly late preterm or term small for gestational age infants without any problems at birth and weighing 1500–2250 g at birth. The intervention comprised of promotion of skin-to-skin contact and exclusive breastfeeding by trained intervention delivery team through home visits. The intervention group mother-infant-dyads were supported to practice ciKMC till day 28 after birth or until the baby wriggled-out. All infants in the intervention and control groups received Home Based Post Natal Care (HBPNC) visits by government health workers. Cognitive, language, motor and socio-emotional outcomes were assessed at infant-ages 6- and 12-months using Bayley Scale of Infant Development (BSID-III). Other outcomes measured were infant temperament, maternal depression, maternal sense of competence, mother-infant bonding and home-environment. We performed post-hoc equivalence testing using two one-sided tests of equivalence (TOST) to provide evidence that ciKMC does not do harm in terms of neurodevelopment.ResultsIn the intervention arm, the median (IQR) time to initiate ciKMC was 48 (48 to 72) hours after birth. The mean (SD) duration of skin-to-skin-contact was 27.9 (3.9) days with a mean (SD) of 8.7 (3.5) hours per day. We did not find significant effect of ciKMC on any of the child developmental outcomes during infancy. The TOST analysis demonstrated that composite scores for cognitive, language and motor domains at 12 months among the study arms were statistically equivalent.ConclusionOur study was unable to capture any effect of ciKMC on neurodevelopment during infancy in this sample of stable late preterm or term small for gestational age infants. Long term follow-up may provide meaningful insights.Trial registrationThe trial is registered at clinicaltrials.gov NCT02631343 dated February 17, 2016; Retrospectively registered.

Kangaroo mother care to reduce morbidity and mortality in low birthweight infants.

Kangaroo mother care (KMC), originally defined as skin-to-skin contact between a mother and her newborn, frequent and exclusive or nearly exclusive breastfeeding, and early discharge from hospital, has been proposed as an alternative to conventional neonatal care for low birthweight (LBW) infants. To determine whether evidence is available to support the use of KMC in LBW infants as an alternative to conventional neonatal care before or after the initial period of stabilization with conventional care, and to assess beneficial and adverse effects. We used the standard search strategy of the Cochrane Neonatal Review Group. This included searches in CENTRAL (Cochrane Central Register of Controlled Trials; 2016, Issue 6), MEDLINE, Embase, CINAHL (Cumulative Index to Nursing and Allied Health Literature), LILACS (Latin American and Caribbean Health Science Information database), and POPLINE (Population Information Online) databases (all from inception to June 30, 2016), as well as the WHO (World Health Organization) Trial Registration Data Set (up to June 30, 2016). In addition, we searched the web page of the Kangaroo Foundation, conference and symposia proceedings on KMC, and Google Scholar. Randomized controlled trials comparing KMC versus conventional neonatal care, or early-onset KMC versus late-onset KMC, in LBW infants. Data collection and analysis were performed according to the methods of the Cochrane Neonatal Review Group. Twenty-one studies, including 3042 infants, fulfilled inclusion criteria. Nineteen studies evaluated KMC in LBW infants after stabilization, one evaluated KMC in LBW infants before stabilization, and one compared early-onset KMC with late-onset KMC in relatively stable LBW infants. Sixteen studies evaluated intermittent KMC, and five evaluated continuous KMC. KMC versus conventional neonatal care: At discharge or 40 to 41 weeks' postmenstrual age, KMC was associated with a statistically significant reduction in the risk of mortality (risk ratio [RR] 0.60, 95% confidence interval [CI] 0.39 to 0.92; eight trials, 1736 infants), nosocomial infection/sepsis (RR 0.35, 95% CI 0.22 to 0.54; five trials, 1239 infants), and hypothermia (RR 0.28, 95% CI 0.16 to 0.49; nine trials, 989 infants; moderate-quality evidence). At latest follow-up, KMC was associated with a significantly decreased risk of mortality (RR 0.67, 95% CI 0.48 to 0.95; 12 trials, 2293 infants; moderate-quality evidence) and severe infection/sepsis (RR 0.50, 95% CI 0.36 to 0.69; eight trials, 1463 infants; moderate-quality evidence). Moreover, KMC was found to increase weight gain (mean difference [MD] 4.1 g/d, 95% CI 2.3 to 5.9; 11 trials, 1198 infants; moderate-quality evidence), length gain (MD 0.21 cm/week, 95% CI 0.03 to 0.38; three trials, 377 infants) and head circumference gain (MD 0.14 cm/week, 95% CI 0.06 to 0.22; four trials, 495 infants) at latest follow-up, exclusive breastfeeding at discharge or 40 to 41 weeks' postmenstrual age (RR 1.16, 95% CI 1.07 to 1.25; six studies, 1453 mothers) and at one to three months' follow-up (RR 1.20, 95% CI 1.01 to 1.43; five studies, 600 mothers), any (exclusive or partial) breastfeeding at discharge or at 40 to 41 weeks' postmenstrual age (RR 1.20, 95% CI 1.07 to 1.34; 10 studies, 1696 mothers; moderate-quality evidence) and at one to three months' follow-up (RR 1.17, 95% CI 1.05 to 1.31; nine studies, 1394 mothers; low-quality evidence), and some measures of mother-infant attachment and home environment. No statistically significant differences were found between KMC infants and controls in Griffith quotients for psychomotor development at 12 months' corrected age (low-quality evidence). Sensitivity analysis suggested that inclusion of studies with high risk of bias did not affect the general direction of findings nor the size of the treatment effect for main outcomes. Early-onset KMC versus late-onset KMC in relatively stable infants: One trial compared early-onset continuous KMC (within 24 hours post birth) versus late-onset continuous KMC (after 24 hours post birth) in 73 relatively stable LBW infants. Investigators reported no significant differences between the two study groups in mortality, morbidity, severe infection, hypothermia, breastfeeding, and nutritional indicators. Early-onset KMC was associated with a statistically significant reduction in length of hospital stay (MD 0.9 days, 95% CI 0.6 to 1.2). Evidence from this updated review supports the use of KMC in LBW infants as an alternative to conventional neonatal care, mainly in resource-limited settings. Further information is required concerning the effectiveness and safety of early-onset continuous KMC in unstabilized or relatively stabilized LBW infants, as well as long-term neurodevelopmental outcomes and costs of care.

Kangaroo mother care to reduce morbidity and mortality in low birthweight infants.

Kangaroo mother care (KMC), originally defined as skin-to-skin contact between a mother and her newborn, frequent and exclusive or nearly exclusive breastfeeding, and early discharge from hospital, has been proposed as an alternative to conventional neonatal care for low birthweight (LBW) infants. To determine whether there is evidence to support the use of KMC in LBW infants as an alternative to conventional neonatal care. The standard search strategy of the Cochrane Neonatal Group was used. This included searches in MEDLINE, EMBASE, LILACS, POPLINE, CINAHL databases (all from inception to March 31, 2014) and the Cochrane Central Register of Controlled Trials (The Cochrane Library, Issue 3, 2014) In addition, we searched the web page of the Kangaroo Foundation, conference and symposia proceedings on KMC, and Google scholar. Randomized controlled trials comparing KMC versus conventional neonatal care, or early onset KMC (starting within 24 hours after birth) versus late onset KMC (starting after 24 hours after birth) in LBW infants. Data collection and analysis were performed according to the methods of the Cochrane Neonatal Review Group. Eighteen studies, including 2751 infants, fulfilled inclusion criteria. Sixteen studies evaluated KMC in LBW infants after stabilization, one evaluated KMC in LBW infants before stabilization, and one compared early onset KMC with late onset KMC in relatively stable LBW infants. Thirteen studies evaluated intermittent KMC and five evaluated continuous KMC. At discharge or 40-41 weeks' postmenstrual age, KMC was associated with a reduction in the risk of mortality (typical risk ratio (RR) 0.60, 95% confidence interval (CI) 0.39 to 0.92; eight trials, 1736 infants), nosocomial infection/sepsis (typical RR 0.45, 95% CI 0.27 to 0.76), hypothermia (typical RR 0.34, 95% CI 0.17 to 0.67), and length of hospital stay (typical mean difference 2.2 days, 95% CI 0.6 to 3.7). At latest follow up, KMC was associated with a decreased risk of mortality (typical RR 0.67, 95% CI 0.48 to 0.95; 11 trials, 2167 infants) and severe infection/sepsis (typical RR 0.56, 95% CI 0.40 to 0.78). Moreover, KMC was found to increase some measures of infant growth, breastfeeding, and mother-infant attachment. There were no significant differences between KMC infants and controls in neurodevelopmental and neurosensory impairment at one year of corrected age. Sensitivity analysis suggested that the inclusion of studies with high risk of bias did not affect the general direction of findings or the size of the treatment effect for the main outcomes. The evidence from this updated review supports the use of KMC in LBW infants as an alternative to conventional neonatal care mainly in resource-limited settings. Further information is required concerning effectiveness and safety of early onset continuous KMC in unstabilized or relatively stabilized LBW infants, long term neurodevelopmental outcomes, and costs of care.

Cochrane Review: Kangaroo mother care to reduce morbidity and mortality in low birthweight infants

AbstractBackgroundKangaroo mother care (KMC), originally defined as skin‐to‐skin contact between a mother and her newborn, frequent and exclusive or nearly exclusive breastfeeding, and early discharge from hospital, has been proposed as an alternative to conventional neonatal care for low birthweight (LBW) infants.ObjectivesTo determine whether there is evidence to support the use of KMC in LBW infants as an alternative to conventional neonatal care.Search methodsThe standard search strategy of the Cochrane Neonatal Group was used. This included searches of MEDLINE, EMBASE, LILACS, POPLINE, CINAHL databases (from inception to January 31, 2011), and the Cochrane Central Register of Controlled Trials (The Cochrane Library, Issue 1, 2011). In addition, we searched the web page of the Kangaroo Foundation, conference and symposia proceedings on KMC, and Google scholar.Selection criteriaRandomized controlled trials comparing KMC versus conventional neonatal care, or early onset KMC (starting within 24 hours after birth) versus late onset KMC (starting after 24 hours after birth) in LBW infants.Data collection and analysisData collection and analysis were performed according to the methods of the Cochrane Neonatal Review Group.Main resultsSixteen studies, including 2518 infants, fulfilled inclusion criteria. Fourteen studies evaluated KMC in LBW infants after stabilization, one evaluated KMC in LBW infants before stabilization, and one compared early onset KMC with late onset KMC in relatively stable LBW infants. Eleven studies evaluated intermittent KMC and five evaluated continuous KMC. At discharge or 40 ‐ 41 weeks' postmenstrual age, KMC was associated with a reduction in the risk of mortality (typical risk ratio (RR) 0.60, 95% confidence interval (CI) 0.39 to 0.93; seven trials, 1614 infants), nosocomial infection/sepsis (typical RR 0.42, 95% CI 0.24 to 0.73), hypothermia (typical RR 0.23, 95% CI 0.10 to 0.55), and length of hospital stay (typical mean difference 2.4 days, 95% CI 0.7 to 4.1). At latest follow up, KMC was associated with a decreased risk of mortality (typical RR 0.68, 95% CI 0.48 to 0.96; nine trials, 1952 infants) and severe infection/sepsis (typical RR 0.57, 95% CI 0.40 to 0.80). Moreover, KMC was found to increase some measures of infant growth, breastfeeding, and mother‐infant attachment.Authors' conclusionsThe evidence from this updated review supports the use of KMC in LBW infants as an alternative to conventional neonatal care mainly in resource‐limited settings. Further information is required concerning effectiveness and safety of early onset continuous KMC in unstabilized LBW infants, long term neurodevelopmental outcomes, and costs of care.Plain Language SummaryKangaroo mother care to reduce morbidity and mortality in low birthweight infantsKangaroo mother care (KMC) is an effective and safe alternative to conventional neonatal care in low birthweight (LBW) infants mainly in resource‐limited countries.Low birthweight (LBW) (less than 2500 g) is associated with an increased risk of neonatal morbidity and mortality, neurodevelopmental disabilities, and cardiovascular disease at adulthood. Conventional neonatal care of LBW infants is expensive and needs both highly skilled personnel and permanent logistic support. The major component of KMC is skin‐to‐skin contact (SSC) between a mother and her newborn. The other two components of KMC are frequent and exclusive or nearly exclusive breastfeeding and attempt of early discharge from hospital. Compared with conventional neonatal care, KMC was found to reduce mortality at discharge or 40 ‐ 41 weeks' postmenstrual age and at latest follow up, severe infection/sepsis, nosocomial infection/sepsis, hypothermia, severe illness, lower respiratory tract disease, and length of hospital stay. Moreover, KMC increased weight, head circumference, and length gain, breastfeeding, mother satisfaction with method of infant care, some measures of maternal‐infant attachment, and home environment. There was no difference in neurodevelopmental outcomes at one year of corrected age.

Molecular epidemiological analysis of a nosocomial outbreak of respiratory syncytial virus associated pneumonia in a kangaroo mother care unit in South Africa

Respiratory syncytial virus (RSV) may cause severe lower respiratory tract disease in premature infants. Prolonged viral shedding has been reported in patients with underlying immunosuppressive disorders, such as human immunodeficiency virus 1 (HIV-1) infection. During March to May 2006, 23 preterm pediatric patients developed nosocomial pneumonia in a district hospital in the Gauteng Province of South Africa due to RSV infection. The patients were identified using routine diagnostic testing. All had been admitted with their mothers to a Kangaroo Mother Care (KMC) ward from birth--a low care unit for the management of stable low birth weight infants. The HIV-1 seroprevalence among the mothers to these infants was 52.6%, translating to a 52.6% perinatal exposure. A multiplex nested RT-PCR was used to subtype RSV positive nasopharyngeal aspirates. Sequencing and phylogenetic analysis of part of the G-protein gene was used for molecular epidemiological analysis of the outbreak. In total, 19 of the 23 RSV positive specimens could be PCR amplified and sequenced. The subtype A, GA5 genotype was identified in 14 specimens and the BA genotype, a new subtype B genotype not previously recognized in South Africa, in seven. One patient had an infection with both genotypes. Phylogenetic analysis demonstrated eight separate introductions. Two of the strains identified in this outbreak were identical to strains circulating in a general pediatric ward of this hospital during the preceding month. Inadequate infection control measures by health care providers and mothers to children in KMC units may increase potentially the risk of severe RSV infection in a population group with compounded risk factors.

Hepatic de Novo Lipogenesis in Stable Low‐Birth‐Weight Infants During Exclusive Breast Milk Feedings and During Parenteral Nutrition

Low-birth-weight (LBW) infants have high energy requirements and are dependent on high fat intake to maintain adequate postnatal growth. Fat energy is transported in plasma as triglycerides, which are either derived from the diet or from de novo lipogenesis (DNL). It is our hypothesis that DNL plays an important physiologic role in adapting to exclusive breast milk (EBM) feeding or to parenteral nutrition (PN). We studied hepatic de novo lipogenesis in 14 LBW (<34-week gestation) appropriate for gestational age and receiving either EBM feedings or full PN support. Stable isotope tracer [2-(13)C] acetate was administered for 72 hours to achieve an estimated 10% enrichment of daily fat intake. Fatty acids were extracted from plasma for gas chromatography-mass spectrometry analyses. Percent new synthesis of palmitate was 13.1% +/- 2.5% in the EBM group and 14.9% +/- 0.7% in the PN group (NS), stearate was 11.1% +/- 2.7% in the EBM group and 10.6% +/- 14% in the PN group (NS) and cholesterol was 12.7% +/- 2.1% in the EBM group and 17.4% +/- 4.6% in the PN group (NS) after 72 hours of tracer administration (mean +/- SEM). The plasma lipid fatty acid composition in palmitate, oleate, and stearate with intake of 3.6 +/- 0.6 g/kg/d of IV lipids (ILs) was similar to EBM-feeding infants taking 6.3 +/- 0.13 g/kg/d of fat. De novo lipogenesis is active in stable LBW infants maintaining standard postnatal growth. Hepatic DNL permits newborn infants to meet the fat energy needs of peripheral tissues for growth and storage and to maintain plasma fatty acid composition in adaptation to different dietary fat intake.

Hematocrit Correlates Well with Red Cell Volume in Preterm Infants 784

Objective: Hematocrit (HCT, the packed cell volume) is often used in clinical practice to draw inferences about circulating red cell volume (RCV, routinely expressed per kg body weight) because the RCV is considerably more difficult to measure. In some, but not all, previous studies of low birth weight (LBW) infants, HCT correlated poorly with RCV. The present study reexamined correlation between HCT and RCV in preterm infants using a nonradioactive method for RCV that is less susceptible to HCT artifact. Study design: Using flow cytometric detection of the in vivo dilution of biotinylated red blood cells, RCV (mL/kg) was determined on 43 occasions in 28 stable infants with birth weights < 2.2 kg at unselected ages between 7 and 79 days; mean age at time of study = 36 days (SD = 16 days). HCT was determined by automated cell counting. Results: Hematocrit correlated highly with RCV (P < 0.0001). Excluding the single outlier shown, correlation = 0.94, intercept = -4.8, and slope = 0.88 with 95% confidence limits for the population depicted by (---) lines. However, the prediction of RCV from HCT remained imprecise; for example, an infant with HCT = 30 could have an RCV from 15 to 28 mL/kg (95% confidence level). Conclusion: In the population of stable LBW infants older than 7 d, the degree of correlation between HCT and RCV is high enough to provide some guidance in transfusion decisions, but HCT may still substantially overestimate or underestimate RCV in individual infants. Figure