Risk factors and clinical indicators: early-onset neonatal infection

1.9 Identification and assessment before birth

1.9.1

For women, trans men and non-binary people in labour, identify and assess any risk factors for early-onset neonatal infection (see box 1 on risks factors for early-onset neonatal infection). Throughout labour, monitor for any new risk factors. [2021]

Box 1: Risk factors for early-onset neonatal infection, including 'red flags'

Red flag risk factor:

  • suspected or confirmed infection in another baby in the case of a multiple pregnancy

Other risk factors:

  • invasive group B streptococcal infection in a previous baby or maternal group B streptococcal colonisation, bacteriuria or infection in the current pregnancy

  • pre-term birth following spontaneous labour before 37 weeks' gestation

  • confirmed rupture of membranes for more than 18 hours before a pre-term birth

  • confirmed rupture of membranes for more than 24 hours before a term birth [2026]

  • suspected or confirmed maternal sepsis in the intrapartum or early postpartum period [2021, amended 2026]

  • suspected or confirmed chorioamnionitis [2021, amended 2026]

For a short explanation of why the committee made these recommendations and how they might affect practice, see the rationale and impact section on identification and assessment of risk factors for early-onset neonatal infection before birth.

Full details of the evidence and the committee's discussion are in evidence review D: maternal and neonatal risk factors for early-onset neonatal infection.

1.10 Assessment and risk management after birth

1.10.1

If there are any risk factors for early-onset neonatal infection (see box 1 on risk-factors for early-onset neonatal infection), or if there are clinical indicators of possible early-onset neonatal infection (see box 2 on clinical indicators of possible early-onset neonatal infection):

  • perform an immediate clinical assessment

  • review the maternal and neonatal history

  • carry out a physical examination of the baby, including an assessment of vital signs. [2021]

1.10.2

If group B streptococcus infection is identified in the woman, trans man or non-binary person within 72 hours after the baby's birth:

  • ask those directly involved in the baby's care (for example, a parent, carer, or healthcare professional) whether they have any concerns in relation to the clinical indicators listed in box 2 and

  • identify any other risk factors present and

  • look for clinical indicators of infection.

    Use this assessment to decide on clinical management (see recommendation 1.10.3 for the framework for making antibiotic decisions). [2021]

Box 2: Clinical indicators of possible early-onset neonatal infection (observations and events in the baby), including 'red flags'

Red flag clinical indicators:

  • apnoea (temporary stopping of breathing)

  • seizures

  • need for cardiopulmonary resuscitation

  • need for mechanical ventilation

  • signs of shock

Other clinical indicators:

  • altered behaviour or responsiveness

  • altered muscle tone (for example, floppiness)

  • feeding difficulties (for example, feed refusal)

  • feed intolerance, including vomiting, excessive gastric aspirates and abdominal distension

  • abnormal heart rate (bradycardia or tachycardia)

  • signs of respiratory distress (including grunting, recession, tachypnoea)

  • hypoxia (for example, central cyanosis or reduced oxygen saturation level)

  • persistent pulmonary hypertension of newborns

  • jaundice within 24 hours of birth

  • signs of neonatal encephalopathy

  • temperature abnormality (lower than 36°C or higher than 38°C) unexplained by environmental factors

  • unexplained excessive bleeding, thrombocytopenia, or abnormal coagulation

  • altered glucose homeostasis (hypoglycaemia or hyperglycaemia)

  • metabolic acidosis (base deficit of 10 mmol/litre or greater)

1.10.3

Use the following framework, based on the risk factors in box 1 and the clinical indicators in box 2, to make antibiotic management decisions as directed:

  • In babies with any red flag, or with 2 or more 'non-red-flag' risk factors or clinical indicators:

    • follow the recommendations in the section on investigations before starting antibiotics and

    • start antibiotic treatment according to the recommendations in this guideline and

    • do not wait for the test results before starting antibiotics

  • in babies without red flags and only 1 risk factor or 1 clinical indicator, use clinical judgement to decide:

    • whether it is safe to withhold antibiotics and

    • whether the baby's vital signs and clinical condition need to be monitored. If monitoring is needed, continue for at least 12 hours using a newborn early warning system

  • for babies without risk factors or clinical indicators of possible infection, continue routine postnatal care as covered in NICE's guideline on postnatal care. [2021]

1.10.4

The Kaiser Permanente neonatal sepsis calculator can be used as an alternative to the framework outlined in recommendation 1.10.3 for babies born after 34+0 weeks of pregnancy who are being cared for in a neonatal unit, transitional care or postnatal ward. It should only be used if it is part of a prospective audit, which should record:

  • total number of babies assessed using the calculator

  • number of babies correctly identified by the calculator who develop a culture-confirmed neonatal infection

  • number of babies incorrectly identified by the calculator who do not develop a culture-confirmed neonatal infection

  • number of babies missed by the calculator who develop a culture-confirmed neonatal infection. [2021]

1.10.5

If using the Kaiser Permanente neonatal sepsis calculator to assess the risk of early-onset neonatal infection, use the classification given by the calculator to direct management decisions. [2021]

1.11 Babies being monitored for possible early-onset neonatal infection

1.11.1

In babies being monitored for possible early-onset neonatal infection:

For a short explanation of why the committee made this recommendation and how it might affect practice, see the rationale and impact section on babies being monitored for possible early-onset neonatal infection.

Full details of the evidence and the committee's discussion are in evidence review D: maternal and neonatal risk factors for early-onset neonatal infection.