Validation of the Bernese Pain Scale for Neonates

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

156 participants

Study Classification

OBSERVATIONAL

Study Start Date

2015-11-30

Study Completion Date

2017-01-31

Brief Summary

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The aims of this validation study are the testing of the Bernese Pain Scale for Neonates' (BPSN) psychometric properties. The variability of pain reactions related to behavioral and physiological patterns across time will also be examined. Furthermore, the influence of contextual factors on the variability of pain reactions across gestational age groups will be explored. The results will be used for modifications of the BPSN to account for contextual factors in future clinical pain assessment in neonates.

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Detailed Description

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Preterm birth rates are rising worldwide, including in Europe. In 2014, Switzerland's rate of premature births reached 7.2%. Still, while significant progress in neonatal care has increased the long-term survival of preterm infants, other long-term outcomes remain problematic. As a result, affected infants commonly undergo exceedingly high numbers of painful procedures on a daily basis. For many, these treatment interventions take place at a crucial period in the development of the nociceptive and central nervous systems, i.e., at a developmental stage when repeated painful stimulus may induce both structural and functional reorganization of the nervous system and an altered pain response.

As infants are unable to communicate verbally, clinical pain assessment in neonates, particularly those delivered preterm, is highly challenging. Therefore, pain responses have to be observed according to physiological and behavioral indicators which might vary across preterm infants depending on their physiological and neurological development stages.

The Bernese Pain Scale for Neonates (BPSN) is a multidimensional pain assessment tool which is already widely used in clinical settings in the German speaking areas of Europe. Recent findings suggest that pain reaction is influenced by more than noxious stimulation alone: it is assumed that contextual factors, e.g., gestational age (GA) or gender, might also impact pain reactivity.

The aims of this validation study are:

* to undertake the psychometric testing of the BPSN regarding its concurrent validity with the Premature Infant Pain Profile-Revised (PIPP-R), construct validity, interrater and intrarater reliability, specificity and sensitivity;
* to examine the variability of pain reactions related to behavioural and physiological patterns across time;
* to assess the influence of contextual factors on the variability of pain reactions across GA groups; and
* to examine the relationship between behavioural and physiological indicators across time.

This multisite psychometric measurement study of the BPSN will use repeated measures design. The study will take place in three tertiary care hospitals (Bern, Zurich and Basel) in Switzerland. To examine the impact of GA on pain reaction and its variability, the infants will be stratified into six GA groups ranging from 24 0/7 to 42 0/7. Among preterm infants with GAs up to 36 6/7 weeks, five consecutive heel sticks within the first 14 days of life will be documented. Among healthy-term infants two heel sticks within the first days after birth will be documented. For each heel stick, measurements will be recorded for each of three phases: baseline, heel stick, and recovery. All phases will be videotaped and the child's pain reaction later rated according to the BPSN by five independent raters blinded to the measurement phase. Individual contextual factors of interest for this study are documented in a standardised way in all three participating Neonatal Intensive Care Units (NICUs), and can be extracted from patient charts.

This diagnostic study is intended to validate the BPSN with consideration for contextual factors influencing neonatal pain responses. Understanding and embedding the influences of contextual factors into a final version of the BPSN-Context will help clinicians more accurately assess pain in the clinical setting, and will eventually help them minimize the pain endured by neonates, particularly preterm neonates in NICUs. For preterm infants requiring intensive care, adequate and efficient pain management is an important factor in later motor and cognitive development. The investigators hope this study will contribute to the prevention of negative long-term outcomes in this patient population.

Conditions

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Pain Assessment

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Interventions

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heel stick

Consecutive routine blood sampling heel sticks

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Preterm infants born between 24 0/7 and 36 6/7 weeks of gestation will be included if they are expected to undergo 5 routine heel capillary blood samples during the first 14 days of life; if they are ventilated or not ventilated; and if their parents give informed consent.
* Term infants born between 37 0/7 and 42 0/7 weeks of gestation will be included if they are expected to have at least 2 routine heel capillary blood samples during the first days of life and if their parents give informed consent.

Exclusion Criteria

* Grade III oder IV intraventricular haemorrhaging
* Severe life-threatening malformation or suffer from any condition involving partial or total loss of sensitivity
* pHa \< 7.15 (umbilical cord)
* Surgery for any reason
* Congenital malformation affecting brain circulation and cardiovascular system

Minimum Eligible Age

24 Weeks

Maximum Eligible Age

41 Weeks

Eligible Sex

ALL

Accepts Healthy Volunteers

No