Tag Archives: ophthalmology

June 2016 published

Curly toes this month to herald the start of a new series on paediatric orthopaedics, sexual bullying, jaundice in the neonatal period and periorbital cellulitis.  Do leave comments below…

Periorbital and orbital cellulitis in children

                         Peri-Orbital and Orbital Cellulitis in Children

With thanks to Dr Kat Smith, paediatric registrar and education fellow at King’s College Hospital….

The somewhat red, somewhat swollen eye is a relatively common presentation in children, and distinguishing between peri-orbital and orbital cellulitis hinges closely on an examination which can be difficult to perform in young children who cannot communicate pain on eye movement or subtle changes in vision.

Back to basics

orbital cellulitis diagram

(Diagram above from quizlet.com)

The orbital septum is key in differentiating between peri-orbital and orbital cellulitis, and in dictating management. For those of us who haven’t thought about it since medical school, it is an extension of the periosteum of the frontal plate of the upper eyelid; a tough structure, where infection cannot pass from front to back unless the septum is breached by a sharp object. However, the orbital septum is not as thick and well developed in infants as it is in older children and adults, and so is not as effective a physical barrier in this age group.

Peri-orbital (or pre-septal) cellulitis is inflammation and infection of the eyelid soft tissue superficial and anterior to the orbital septum; the septum itself is not affected. Ocular function remains intact.

Orbital (or post-septal) cellulitis is infection of muscles and fat within the orbit, posterior to the orbital septum; the septum itself can be affected. It’s location in muscles and fat leads to associated ocular dysfunction.

 

What’s different in children?

Children are twice as likely to develop periorbital and orbital cellulitis in comparison to adults, and whilst in adults peri-orbital cellulitis is usually secondary to a superficial injury, children may develop it secondary to an occult underlying bacterial sinusitis (in particular, through the thin and porous ethmoid bone; there is often a history of recent URTI) or due to spread from another primary infection, such as pneumonia.

This difference in underlying aetiology means that in children a peri-orbital infection can rapidly progress to the much more concerning condition of orbital cellulitis, with the associated risk of rare but serious complications such as abscess formation, cavernous sinus thrombosis, intracranial abscess, and loss of vision.

 

Examination

The happy, well-looking child who is able to open their eye sufficiently for you to demonstrate normal light reflexes and see that they comfortably move their eyes in all planes more than likely has peri-orbital cellulitis; this will be most children. However, there are red flags that make orbital cellulitis a likely diagnosis and should prompt urgent referral to secondary care:

–          Eyelid swelling such that the eye is not visible

–          Toxic / systemically unwell

–          CNS signs or symptoms

–          Severe / persistent headache

–          Pain on pressing the closed eyelid, indicating septal involvement

–          Pain on eye movement, indicating involvement of muscle and / or fat

–          Diplopia; older children should be able to describe “seeing double”, younger children may become unsteady when walking or struggle to grab objects

–          Reduced visual acuity; the younger child may struggle to play with smaller / more “fiddly” toys

–          Proptosis

–          Ophthalmoplegia

–          Absent light reflexes

–          No improvement or worsening despite 48hrs oral antibiotics

–          Neonatal age group (may be congenital dacryocystitis)

 

Management

Most children will be well, with mild-moderate swelling and erythema and no red flags; these children can initially be managed in the community, and most will not require later referral to secondary care.

Children with mild-moderate eyelid swelling, no significant erythema and an obvious cause – such as a chalazion or insect bite – do not have peri-orbital cellulitis, although they may need advice or treatment for the underlying cause such as warm compresses or anti-histamines.

Those with mild to moderate swelling, erythema and no obvious cause but no red flags are likely to have peri-orbital cellulitis and so require oral antibiotics; typically a 5-7 day course of co-amoxiclav is given, although this varies dependent on local microbiology guidance. Because of the underlying aetiology of peri-orbital cellulitis in children, parents should be advised that if children develop any red flag symptoms they require immediate medical review, and a GP review should be arranged for 48 hours’ time to ensure that symptoms have started to improve.

It can be unclear in young children if they have any red flags; if in doubt, refer to secondary care for review by ophthalmology, A&E, or paediatric teams. Even in secondary care it can be unclear, and children may be admitted simply for oral antibiotics and observation.  ENT teams will also need to be involved if orbital cellulitis is suspected.

As above, children with any red flags are likely to have orbital cellulitis and will likely require admission to hospital for blood tests, cultures and IV antibiotics +/- imaging of the sinuses and orbits (although more extensive neuroimaging is indicated if there is a suspicion of cerebral infection).

References

“Children are twice as likely to develop periorbital and orbital cellulitis in comparison to adults”

Robinson A, Beech T, McDermott A, et al. Investigation and Management of adult periorbital or orbital cellulitis. J Laryngol Oto. 2007;121:545-7.

Bibliography:

BMJ Best Practice: Peri-orbital and orbital cellulitis. Available from http://bestpractice.bmj.com/best-practice/monograph/734.html

Clarke W. Periorbital and orbital cellulitis in children. Paediatr Child Health. 2004;9(7):471-2

The College of Optometrists. Clinical Management Guidelines. Cellulitis, preseptal and orbital. Available from http://www.college-optometrists.org/en/utilities/document-summary.cfm/docid/25FDE60B-E41D-4212-8AB02819A83E72E1

 

 

 

 

 

Bell’s palsy – time for a rethink re steroids for children?

Steroids vs Steroids & Antivirals for Bell ’s Palsy

by Dr Tom Waterfield

Bell’s palsy is an idiopathic facial nerve palsy first described by Sir Charles Bell in 1830. It typically presents with a sudden onset of unilateral facial palsy. It presents as a unilateral lower motor neurone weakness ie. the forehead is also involved (if the forehead is not involved, this is an upper motor neurone weakness with a different aetiology and needs prompt referral for further investigation). The prognosis in true Bell’s is typically good with up to 90% of children recovering by 3 months of age1. The mainstay of management in children is supportive (artificial tears/patching). The convention – at least in adults – is for the early (within 72 hours of onset) use of oral prednisolone at a dose of 2mg/kg (max 60-80mg) for 5 days followed by a 5 day tapering dose2. The evidence base for this comes from large randomised controlled studies in adults3,4.

Evidence for the use of steroids alone

Two large double blind randomised control studies looking at over 1300 patients demonstrated that early use of Prednisolone orally significantly improved symptoms at 3 months (p<0.001) with a NNT of around 53,4. There are no similar studies in children and it is worth considering that children typically have a better prognosis than adults. Whilst prednisolone orally would be appropriate and safe for most children there may be instances where the risks of oral steroids could be considered too great to justify their use i.e. in a poorly controlled diabetic patient (which is a group in whom Bell’s palsy is more prevalent).

Evidence for the use of combined steroids and antivirals

In the last decade there has been an ongoing debate around the use of oral antiviral agents such as Aciclovir in the management of Bell’s Palsy. It is widely believed that Bell’s Palsy is due to an underlying Herpes Simplex infection and PCR studies have demonstrated concurrent HSV infection at the facial nerve in adult patients with Bell’s Palsy5. Despite this, good quality, large scale studies looking at the efficacy of oral antiviral agents have failed to demonstrate a benefit3,4.

Summary

The current evidence base for the medical management of Bell’s palsy comes predominantly from adult data3,4. Children typically have a milder illness with a quicker recovery than adults irrespective of the treatment chosen1. UpToDate would have us believe that the mainstay of medical management is the use of oral steroids at a dose of 2mg/kg(max 60-80mg) for 5 days followed by a 5 day taper. Additional antiviral treatment appears to be unnecessary with large-scale, high quality studies not showing a benefit. Smaller, lower quality studies have suggested additional antivirals may be useful and these could be considered on a case by case basis6,7. For example in a severe case (complete paralysis) with clinical evidence of concurrent Herpes Simplex infection it may be worth considering additional antiviral medication such as oral Aciclovir.

 

References:

  1. Peitersen E. Bell’s palsy: the spontaneous course of 2,500 peripheral facial nerve palsies of different etiologies. ActaOtolaryngol Suppl. 2002.
  2. https://www.aan.com/Guidelines/Home/GetGuidelineContent/574 (Last accessed 19/08/2014 at 12:03)
  3. Sullivan FM, Swan IR, Donnan PT et al. Early treatment with prednisolone or acyclovir in Bell’s palsy. N Engl J Med. 2007;357(16):1598.
  4. Yeo SG, Lee YC, Park DC, Cha CI. Acyclovir and steroid versus steroid alone in the treatment of Bell’s palsy. Am J. Otolaryngol 2008;29:163–168.
  5. Schirm J, Mulkens PS. Bell’s palsy and herpes simplex virus. APMIS. 1997;105(11):815.
  6. Minnerop M, Herbst M, Fimmers R, Kaabar P et al. Bell’s palsy: combined treatment of famciclovir and prednisone is superior to prednisone alone. Neurol. 2008 Nov;255(11):1726-30.
  7. Lee HY, Byun JY, Park MS, Yeo SG.Steroid-antiviral treatment improves the recovery rate in patients with severe Bell’s palsy.Am J Med. 2013 Apr;126(4):336-41.

June 2012 PDF

June’s PDF digest is ready for consumption.  Both APLS and NICE have lost paraldehyde from their status epilepticus algorithms, a link to Working Together and an article on sticky eyes v. conjunctivitis.  Blood pressure centile charts and a plug for the London Deanery’s communication skills courses.  Do leave comments below.

Torticollis

Torticollis / Wry Neck / Sternomastoid tumour of infancy with thanks to Dr Katie Knight

(From Latin tortus = twisted + collum = neck)

Torticollis can be congenital or acquired, but this article will focus mostly on the congenital form, affecting 0.3% of infants and usually presenting in the first 6 months of life [1]. It is the third most common reason for referral to orthopaedics in this age group. The overwhelming majority of cases seen are due to a benign muscular problem, but some more sinister diagnoses can also present in a similar way, so it is crucial to be aware of these.

What causes torticollis?

Muscular damage:

Most cases of congenital torticollis are the result of damage to the sternocleidomastoid muscle (SCM) at birth (for example in instrumental delivery) or in the uterus (restricted movement or abnormal positioning causing muscle damage).

Damage to the SCM causes it to shorten or contract as fibrosis affects the area. Fibrotic change in the damaged muscle is felt as a hard lump – the ‘pseudotumour’ of torticollis, as it is sometimes called.

This shortening of the muscle in turn makes it difficult for the infant to turn their head, resulting in neck stiffness and a fixed head position, with very limited neck movement.

Risk of muscular torticollis is increased in intrauterine constraint (eg breech presentation or oligohydramnios [2]), and it is also associated with other minor positional deformities. 10% of babies with torticollis have hip dysplasia. [3] One study looking at 1001 babies found that 10% had one or more postural deformities (in decreasing order of frequency: plagiocephaly or torticollis; congenital scoliosis or pelvic obliquity; adduction contracture of a hip and/or malpositions of the knees or feet [4]. This study found that all these deformities were more likely to be observed in:

  • babies with a greater birth length
  • breech presentation
  • oligohydramnios
  • babies delivered instrumentally
  • Male infants were also found to be 1.9 x more likely to have positional deformities including torticollis.

With these presenting symptoms described above and nothing else of note, torticollis is clearly the first diagnosis that springs to mind. HOWEVER – to play the devil’s advocate – a baby who presents with ‘a lump in the neck’ and ‘abnormal neurology’ certainly demands a careful history and examination.

Uncommon causes of torticollis

Congenital vertebral abnormalities:

The SCM is supplied by the accessory nerve (CN XI), which exits the skull through the jugular foramen. Anything affecting the structure of the upper cervical spine or skull base could compress the nerve root of CN XI and cause torticollis.

Congenital vertebral abnormalities often come along with other congenital abnormalities, as part of a syndrome (two examples are briefly described below, for interest). For this reason a child presenting with torticollis who is known to have other congenital abnormalities should be carefully examined with the possibility of an unusual syndrome kept in mind. [5]

MURCS syndrome (Müllerian duct/renal aplasia/cervicothoracic somite dysplasia) is a rare condition affecting 1 in 5000 female infants that has been associated with congenital torticollis in some cases due to aplasia of the posterior vertebral arch [6]

Klippel-Feil syndrome – cervical spine fusion is seen along with a host of other symptoms [7]

Posterior fossa tumours, tumours of the cervical spine, atlas and axis – these are very rare and should be part of the differential in older children who present with acquired torticollis. [8, 9]  Posterior fossa tumours, when they present with torticollis, usually have accompanying symptoms of intracranial pathology (headache, nausea, vomiting, eye signs) [10]

‘Mimics’ of torticollis

‘Ocular torticollis’ occurs when there is 4th cranial nerve palsy. The superior oblique muscle, supplied by CN IV, causes the eye to look inwards and downwards. Paralysis of the muscle means the eye cannot adduct or internally rotate, and this causes torsional diplopia, which the child ‘corrects’ by tilting the head position. Adopting this position over a long period of time eventually causes contracture of the SCM. [11] This condition can be ruled out by using the cover test (watch a 7 minute long Youtube video with a rather disconcerting picture of a huge eye in the background here).  When the affected eye is covered, the child should spontaneously correct their head position (in the early stages, before muscle contracture has occurred).

Examination

Appearance (see image): The head is tilted to one side (to the side of the affected muscle), and the chin is turned to the other side. There is stiffness, from the lack of movement, so there may be pain when the neck position is passively corrected.

A lump may be felt in the distal SCM.

Lump felt in distal SCM

 

 Investigation

The key is to differentiate between muscular torticollis (ie common, benign, easily correctible) and non-muscular torticollis (ie possibly secondary to neurological, ocular or vertebral pathology, and needing further investigation.

If there is a lump palpable in the SCM, it needs to be differentiated from other causes of a lump in the neck. Ultrasound is the best first line investigation – it detects fibrosis of the muscle (diagnosing torticollis) but would also pick up abnormal lymph nodes or masses.

Fine needle aspiration would be the next step if there was any uncertainty of the diagnosis, but this is rarely needed.

 Treatment

 Once muscular torticollis is confirmed:

 Physiotherapy is the mainstay of treatment. Even when there is severe fibrosis of the SCM, physio is effective in 98% [12]

  •  Neck stretches, performed regularly, moving the neck in the opposite direction to the affected muscle (tilt head sideways towards non-affected side, rotate towards affected side). Physio referral is indicated so parents can be taught the correct way to perform the stretches.
  • Let the baby spend more time lying on its tummy, to strengthen neck muscles
  • Use baby chair or Fraser chair to minimise the time the baby spends lying flat
  • Encourage head turning to affected side by using toys, distraction, feeding from that side
  • Physiotherapist may advise use of a neck brace in certain cases.

 (The above advice adapted from ‘Physio Questions’ [13], a blog by an Australian physio – torticollis featured as a blog entry in August 2010)

 

Surgical treatment is very rarely needed – only in instances where conservative management has failed after 6 months of treatment. When surgery is performed, the operation is a bipolar release of the SCM, and this has been found to be highly successful, even in patients older than 5 years [14] and into adulthood [15]

Alternatives to surgery?

A recent successful non-surgical development in treating cases resistant to physio is using botox injection. [16] The evidence for chiropractic treatment is weak, isolated successful cases have been described, [17] but there has been no randomised controlled trial. There are also reports of infants with torticollis caused by neurogenic tumours being treated (unsuccessfully) by a chiropractor before the correct diagnosis was made, [18] so it is imperative that parents have consulted a doctor before they choose to seek chiropractic help.

 References:

  1. http://www.ncbi.nlm.nih.gov/pubmed/3566514?tool=bestpractice.bmj.com
  2. http://www.ncbi.nlm.nih.gov/pubmed/21376202
  3. http://www.ncbi.nlm.nih.gov/pubmed/7484683
  4. http://www.ncbi.nlm.nih.gov/pubmed/18795328
  5. http://web.jbjs.org.uk/cgi/reprint/71-B/3/404
  6. http://www.ncbi.nlm.nih.gov/pubmed/21553338
  7. http://emedicine.medscape.com/article/1264848-overview
  8. http://www.ncbi.nlm.nih.gov/pubmed/22095422
  9. http://www.ncbi.nlm.nih.gov/pubmed/20638308
  10. http://www.ncbi.nlm.nih.gov/pubmed/8784707
  11. http://www.ncbi.nlm.nih.gov/pubmed/868283
  12. http://www.ncbi.nlm.nih.gov/pubmed/21843719
  13. http://physioquestions.blogspot.com/2010/08/are-you-worried-about-your-childs.html
  14. http://www.ncbi.nlm.nih.gov/pubmed/22045346
  15. http://www.ncbi.nlm.nih.gov/pubmed/19036153
  16. http://www.ncbi.nlm.nih.gov/pubmed/16470158
  17. http://www.ncbi.nlm.nih.gov/pubmed/8263436
  18. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2484567/?tool=pmcentrez

Paediatric surgery at Whipps Cross

I thought it might be useful to outline the sort of paediatric surgery Whipps offers.  This post is being put together with the help of my surgical colleagues who are keen to continue receiving appropriate paediatric referrals from GPs.  I will be updating it as and when I get the information from the different specialties.

A word from the anaesthetists: As a general rule all of our consultants on the on-call rota are currently able to anaesthetise any child, 3 years or above presenting as an emergency as long as they are ASA 1 or 2 and needing non body cavity surgery (appendicectomy excepted) with an expected duration of less than 2 hours.  (“ASA 1 and 2” are children who are previously fit and well and those with a mild underlying systemic illness such as mild asthma.)  We have three consultants who have had advanced training in paediatric anaesthesia (Drs. Williams, Singh and Radhakrishnan) who undertake regular elective paediatric lists who are happy to anaesthetise younger children.

GENERAL SURGERY (Mr Stephen Brearley) AND UROLOGY (elective surgery from 1 year of age, emergency surgery from 3 years of age):    

Hernias (all types)

Foreskins

Undescended testicles

Lumps of all types

Tongue ties

Thyroglossal cyst

Emergency work in children over the age of 3 eg. suspected appendicitis

Please refer such things as in-grown toenails and verrucae to podiatrists rather than surgeons.

ENT:

(elective work from 6 months of age, emergency work from 3 years of age):

Lead Clinician, Mr. Sam Jayaraj

Dedicated Paediatric ENT clinics at WX:

Mr Jayaraj 3 per month at WX and 2 per month at Forest Medical Centre, Loughton (WX outreach clinic)

Mr Patel 2 per month at WX

Mr Kenyon 1 per month at WX.

N.B. We are in the process of setting up a Paediatric ENT Specialist Community Clinic (SCC) in conjunction with Dr Watkin and our audiological colleagues at Wood Street Clinic – watch this space!

 

ENT Surgical procedures offered at WX 

Tonsillectomy

Adenoidectomy

Oral cavity lesions

Turbinate reduction

Obstructive sleep apnoea assessment

Nasal bone manipulation following trauma

Nasal cautery

Peri-orbital abcess drainage

 Middle ear ventilation tubes (Grommets)

Pre-auricular sinus excision

Pinnaplasty (Mr Jayaraj and Mr Kenyon)

Myringoplasty/tympanoplasty

Mastoidectomy (Mr Nitesh Patel)

 Cervical lymph node excision

Thyroglossal cyst excision

Branchial cyst excision

Tongue tie division

Thyroid surgery (Mr Papesch)

Tertiary paediatric ENT services not available at WX (these are rare conditions which require highly specialised nursing, anaesthetic and allied therapies support):

Cleft lip & palate surgery and craniofacial disorders

Paediatric head & neck malignancy

Cochlear implant surgery

Paediatric airway reconstruction surgery (i.e laryngotracheal reconstructive surgery etc)

Currently we refer these patients to our tertiary paediatric ENT colleagues at Great Ormond Street Hospital

OPHTHALMOLOGY:

Strabismus, eyelid, lacrimal, cataract (with infants being referred to Great Ormond Street where our ophthalmologist with a paediatric interest also works). 

ORTHOPAEDICS:

MAXILLOFACIAL SURGERY:

GP version of February 2011’s Paediatric Pearls

GP February 2011 reminds us all of the NICE guideline on Attention Deficit and Hyperactivity Disorder. We continue our 6-8 week baby check series with information on the absent red reflex and go back to our “from the literature” box to discuss snoring and obstructive sleep apnoea (OSA). We have relaunched our prolonged jaundice guideline. Please leave comments and questions below.

Checking the red reflexes

6 week check series – The Absent Red Reflex – with thanks to Dr Sarah Prentice

 Importance of red reflex examination at the 6 week check

Early detection of potentially sight and life-threatening eye disease. Due to the early and time-limited plasticity and development of the eye, any blockage of light to the retina interferes with development of optic neural pathways and can have profound effects on later vision.

 Pathology

                Cataracts

                Retinoblastoma

                High Refractive errors

                Vitreal haemorrhage/opacity

                Corneal scaring (e.g. ocular toxocariasis)

                Retinal tear

                Retinopathy of prematurity

                Persistence of the tunica vasculosa lentis/Persistent hyperplastic primary vitreous (1)

The Examination

                Darkened room

                Ophthalmoscope on +3 dioptres

                Hold 1 foot away

Red reflexes can only be described as normal if they are:                               

Equal in colour, intensity and clarity with no opacities or white spots (2)

 

Handy hints

                For the child that won’t open his/her eyes: try picking/sitting them up or rocking them from sitting to lying.  Having a parent hold them on their shoulder (as if winding them) and looking from behind often works. A feeding child will often open his/her eyes, although breast feeding then makes looking in the eyes logistically tricky.

Children with darker skin tones may have pale retina.  If retinal vessels can be seen and followed to the disc and the reflex is equal bilaterally then this is reassuring.  Comparison with parents’ red reflexes may also help.

Management:

                Normal:   No further follow-up. Will have routine ophthalmology review by school nurse/orthoptist in pre-school years. (5)

                Unable to see red-reflexes or unsure:  Referral to paediatric ophthalmology primary care clinic (if available)

                Absent red reflex:  Urgent referral to paediatric ophthalmologists (should be seen in less than 2 weeks)

                 Family history of neonatal eye disease e.g. retinoblastoma, congenital cataracts:  Routine referral to paediatric  ophthalmologists.

                Low birth-weight/premature infants (at high risk of retinopathy of prematurity):  Should have had ROP screening and follow-up arranged as necessary by neonatal unit.

 References and resources

  1. 1.       Robertson’s Textbook of Neonatology. Fourth Edition. 2005. Edited by Janet M. Rennie.
  2. 2.       American Academy of Pediatrics Policy Statement. Red Reflex Examination in Infants PEDIATRICS Vol. 109 No. 5 May 2002
  3. 3.       Red Reflex Examination in Neonates, Infants, and Children. PEDIATRICS Vol. 122 No. 6 December 2008, pp. 1401-1404 (doi:10.1542/peds.2008-2624)
  4. 4.       www.eyesite.ca/7modules/Module5/html/Mod5Sec1.html  – Good pictures of cataracts, retinoblastoma and glaucoma
  5. 5.       http://www.patient.co.uk/doctor/Vision-Testing-and-Screening-in-Young-Children.htm
  6. 6.       http://www.bartsandthelondon.nhs.uk/docs/poster_red_reflex_print.pdf  Poster of red reflexes and referral pathway from Bart’s and The London.