Ambulance 2

Drowsy Baby – OSCE Case

If you'd like to support us, check out our awesome products:


You are a junior doctor working in the paediatric emergency department. A 1 month old boy presents with his parents and maternal grandmother. The grandmother is concerned that the infant is unusually drowsy and hard to rouse for feeding. Work through the case to reach a diagnosis.

UK Medical Licensing Assessment (UKMLA)

This clinical case maps to the following UKMLA presentations:

  • The sick child
  • Decreased/loss of consciousness
You might also be interested in our premium collection of 1,300+ ready-made OSCE Stations, including a range of history taking, clinical examination and data interpretation stations ✨


History of presenting complaint

How long has the infant been lethargic?

Initially, the parents stated that the infant had been drowsy for 1-2 days. After speaking with the grandmother, it became apparent that the infant had been lethargic for over two weeks and had vomited several times over the last week.

Do the parents have any other concerns about the infant?

The parents voice no concerns, and they do not report any fevers, vomiting, seizures, or accidental injury. However, the child’s father mentions to you in the corridor after your initial discussion that he had accidentally dropped the infant in his crib a week ago and wondered if that might be related to the infant’s current presentation.

How is the infant feeding?

The infant is breastfed and feeding 10 times a day, however, he needs to be woken for feeds. The mother does not report any issues with breastfeeding and is receiving support from a lactation consultant.

Elimination history

  • Passed meconium shortly after birth
  • Opening bowels regularly
  • 5-6 wet nappies a day

How are the parents coping?

The child’s mother reports feeling exhausted and depressed. She is slow to process information and has difficulty answering questions. The child’s father states he couldn’t be happier and is enjoying spending time with his son. The maternal grandmother is very proud and supportive of her daughter.

Past medical history

  • No know medical conditions
  • No regular medications
  • No allergies

Relevant family history

  • No significant family history.

Social history

  • Occupation (both parents are currently unemployed, but the father is currently looking for some work)
  • Alcohol history (the parents each drink 10-15 units a week of alcohol but do not smoke or use recreational drugs)
  • Smoking history
  • Recreational drug use

Current living situation

  • Both parents and the infant are livingΒ with the infant’s maternal grandmother.
  • Domestic violence hasΒ previously been reported during the pregnancy, but the mother denies any recurrence of this recently.

Other areas of the history


  • Gravidity:Β The number of times a woman has been pregnant, regardless of the outcome.
  • Parity:
    • XΒ (any live or stillbirth after 24 weeks)
    • YΒ (number of pregnancies lost before 24 weeks)
  • Gestational age at delivery
  • Birth weight
  • Mode of delivery
  • Complications in the antenatal, perinatal, postnatal period

For more information, see our OSCE guide to taking an obstetric history.

Mother’s response

“I’ve only been pregnant once, with this child and he was born at 37 weeks. I can’t remember exactly how much he weighed at birth, but I know it was a normal weight. I had a vaginal delivery and there were no complications.”

Inconsistent history, delay in seeking medical treatment, and suspicious mechanism of injury are all red flags for non-accidental injury. Poor feeding, vomiting, and lethargy are all non-specific findings but can indicate head trauma. Signs of brain injury may include seizures, altered mental status and apnoeic episodes.

Clinical examination

In young children, the history is not as useful for narrowing down the differential diagnosis as the infant can not report symptoms and signs are generally non-specific (e.g. crying, poor feeding). As a result, a full clinical assessment of all systems should be adopted to reduce the risk of missing pathology.

Basic observations and measurements

  • Vital signs are within normal limits
  • Measurements:
    • Weight: 3.8kg (10th-25th percentile)
    • Length: 54cm (25th-50th percentile)
    • Head circumference: 38cm (25th-50th percentile)

General inspection

  • The infant is sleeping, with no obvious evidence of injury, abnormal posturing, or signs of distress.
  • There is normal child-carer interaction.

Systems-based physical exam

Cardiovascular and respiratory examination:

  • No abnormalities

Abdominal examination:

  • No abnormalities

Musculoskeletal examination:

  • No swelling or obvious point tenderness of extremities
  • Normal passive range of motion in major joints

Neurological examination:

  • Normal head size and shape
  • No bulging fontanelle
  • Normal tone
  • Primitive reflexes present
  • Deep tendon reflexes were normal
  • Drowsy and lethargic
  • Very difficult to elicit spontaneous eye-opening
  • Eyes were of normal shape and symmetrical
  • Red reflex present
  • Pupils equal and reactive to light
  • No subconjunctival haemorrhage
  • Fundoscopy – extensive bilateral retinal haemorrhages

Dermatological examination:

  • No rashes or birthmarks noted
  • No visible signs of trauma
  • Reduced level of consciousness
  • Bradycardia
  • Reduced respiratory rate
  • Apnoeic episodes
  • Vomiting
  • Bulging fontanelles


At this stage, acute and reversible causes of the infant’s altered mental status must be investigated.

Bedside investigations

  • Urinalysis
  • Capillary blood glucose

Laboratory investigations

  • Full blood count
  • Serum biochemistry
  • Coagulation studies
  • LFTs
  • CRP
  • Lactate
  • Blood culture


  • All of the above investigations return normal results.

CT head

Given the history and the presence of bilateral retinal haemorrhages on fundoscopy, this child needs an urgent CT head to look for signs of intracranial pathology.

Skeletal survey

Given the history of trauma and the possibility of non-accidental injury, the child requires a skeletal survey. A skeletal survey involves multiple X-rays to assess the child’s bones for fractures. A senior paediatric radiologist reviews these images.

Investigation results

  • CT Head: small left subdural haematoma with no midline shift
  • A skeletal survey: two anterior and one posterior rib fracture


Non-accidental injury: shaken baby syndrome

When the infant is shaken, rib fractures and intracranial haemorrhages can occur if enough force has been applied.

Subdural haemorrhages are most commonly seen, but subarachnoid haemorrhages can also occur. Neurological signs that point towards raised intracranial pressure secondary to bleeding and/or brain swelling include vomiting, apnoeic episodes, seizures, irritability and altered mental status. An absence of these signs does not rule out non-accidental head trauma.

Retinal haemorrhages are noted in 80% of these cases and highly suggest non-accidental injury.Β 

It should be noted that although the above-mentioned clinical signs can be found in children who have been shaken, they can also occur due to other causes unrelated to a non-accidental injury. As a result, a multidisciplinary team of specialists review all of the available evidence to decide if a non-accidental injury is likely to have occurred.

For more information, see our guide to non-accidental injury.


The management of potential non-accidental injury is complex and involves a multidisciplinary team, including:

  • Consultant paediatrician
  • Specialists relevant to the child’s injury (e.g. neurosurgery and ophthalmology in this scenario)
  • Senior paediatric nursing staff
  • Consultant paediatric radiologist
  • Social worker
  • Police

The child’s safety is the first concern, which can mean removing the carer’s access to the child during the investigation (or providing supervised access).


  1. Tran, C., Chen, Y. A., Shah, R., & Vaisman, A. (2011). The Toronto notes 2011: Comprehensive medical reference and review for the Medical Council of Canada Qualifying Exam Part 1 and the United States Medical Licensing Exam Step 2. Toronto: Toronto Notes for Medical Students, Inc.
  2. Nitin, C., Bhagwan M., & Riggins Rd. (2015). Neonatal Injuries in Child Abuse. Medscape. Available from: [LINK].
  3. Christian CW. The evaluation of suspected child physical abuse. Pediatrics. 2015 May. 135(5):e1337-54.
  4. Christian CW, Block R. Abusive head trauma in infants and children. Pediatrics. 2009 May. 123(5):1409-11.
  5. McKinney, M. Abusive Head Trauma Cases. (2015). Pedscases. Available from: [LINK].
  6. Christian, C. & Endom, E. 2016. Child abuse: Evaluation and diagnosis of abusive head trauma in infants and children. UpToDate. Available from: [LINK].


Print Friendly, PDF & Email