Should warfarin be routinely prescribed for the first three months after a bioprosthetic valve replacement?

You are consenting a 64-year old lady for AVR. She is quite keen to go for a bioprosthesis as her mother was on warfarin in the past and it had 'never agreed with her'. She is then quite disappointed when you tell her that she will actually have to be on warfarin for 3-months after the operation, and asks what would happen if she didn't take it. You can't quote her a figure of increased risk and therefore resolve to look up the answer.

Does a normal shaped pupil exclude the diagnosis of iritis

A patient presents to the emergency department with a unilateral, red, painful eye. Visual acuity is reduced in the affected eye. The pupil is normal and the cornea is clear. There is some cillary flush around the iris. You can't decide if the diagnosis of iritis is correct or not. The other features of iritis (i.e unilateral, red, painful, decreased visual acurity) are present but the pupil remains a normal size and shape. Is this a common presentation?

Use of lidocaine in the GI Cocktail for the treatment of Dyspepsia

A 35-year-old man presents to the emergency department with a history of burning pain radiating from his epigastric area up through his mediastinum that started after dinner. The patient had a history of gastro-oesophageal reflux disease and was placed on prilosec treatment last year, but has stopped taking this for 3 months. You decide to treat this probable case of dyspepsia with a gastrointestinal cocktail, a mixture of lidocaine and antacid, but wonder if adding the lidocaine yields any benefit.

Cranberry Juice for the treatment of UTIs

A 39y old woman presents with a one day history of suprapubic pain, dysuria and urinary frequency. She is systemically well but dipstick testing confirms blood, protein and leucocytes in her urine sample. You send the sample to the microbiology department for culture and write a prescription for antibiotics. The patient states that she does not like to use conventional medicines and asks if cranberry juice is effective for the treatment of UTIs.

Should patients receiving a radial artery conduit have post-operative Calcium Channel blockers ?

You are looking after a 45-year old bricklayer with severe triple vessel disease who underwent urgent CABG using bilateral internal mammary arteries and a radial artery graft. He has progressed well and is awaiting discharge. He was on no medication on admission and asks you why he needs to have 6 weeks of Diltiazem three times per day as prescribed by your consultant. You have some difficulty justifying this medication and thus resolve to look up the literature that night.

Procedural Sedation for Cardioversion

An 38 year old male arrives in your emergency department complaining of palpitations and feels slightly light headed. He has never had these symptoms before and is certain that they started 1 hour prior to arrival. He is awake and alert with a blood pressure of 134/82 and a pulse of 128. His physical exam is unremarkable with the exception of tachycardia and an irregularly irregular rhythm.

When is a second course of Indometacin effective in ventilated preterm neonates with patent ductus arteriosus?

A 25 week gestation neonate is ventilated for RDS, he develops a haemodynamically significant persistent ductus arteriosus (hsPDA) on day ten of life. The PDA is treated with an initial course of Indometacin and despite initial improvement he remains ventilator dependent. On day seventeen a hsPDA is diagnosed again. How effective is a second course of Indometacin (Indo) at closing the PDA?

Silver Sulphadiazine cream in burns

A 25 year old science teacher comes into the emergency department with a partial thickness burn to her hand after being careless with a bunsen burner. You wonder if silver sulphadiazine cream is better than normal dressings at reducing the risk of infection and healing time.

The relationship between post traumatic stress disorder (PTSD) and affective disorder.

A 30 year old woman comes into the Emergency Department having been the victim of a vicious non-sexual assault. She has suffered from depression since the age of 18. The Mental Health liaison nurse says that you should refer her for psychological support straight away as she has a predisposition to develop PTSD. Although it seems likely that someone with a known depressive disorder is more likely to get post assault psychological problems, you wonder whether there is any evidence to show that this really does occur.

Single dose therapy for chlamydial conjunctivitis

A 24 year old man presents to the emergency eye centre with a uniocular red eye. He has a mucopurolent disharge and a follicular (inclusion) conjunctivitis. An initial diagnosis of adenovirus infection is made, but swabs taken show chlamydial infection. He is referred to the GUM clinic but does not test positive for genital infection. You decide to start him on a 10 day course of doxycycline, but are advised that you could treat him with a single dose of Azithromycin.

Paediatric CPR – do APLS trained staff execute more effective chest compressions

A 4 year old boy in cardiac arrest is brought into the ED as a standby. CPR has been delivered by the ambulance crew en route. Whilst he is being intubated, cardiac compression is carrried out by one of the APLS trained paediatric nurses, but once she tires, it is continued by another staff nurse with no paediatric training. You wonder whether chest compression is more effective in children if delivered by an ATLS trained professional.

Does Delayed Cord Clamping Prevent Late On-set Sepsis?

A baby is born by spontaneous vaginal delivery at 29 weeks gestation. The infant's mother had a previous child born at 28 weeks gestation, who died due to late onset sepsis. The obstetrician clamps the cord immediately after the baby is delivered. Later the paediatrician, whom was present at delivery, asks why the cord was clamped immediately instead of delaying to 30-45 second. The paediatrician highlights the numerous benefits of delayed cord clamping including the prevention of late onset sepsis. A debate ensues as to the best practise and evidence behind the paediatrician's argument.

Novel agents for Paediatric analgesia

A four year old child is brought to the emergency department in moderate to severe pain. You have a protocol for using intra-nasal diamorphine1 in such children, but have been unable to apply it for some time because of a nationwide shortage2. You wonder whether any other opiate could be administered in a similar manner ?

In undisplaced, extra-articular calcaneal fractures is the use of a below knee POP associated with longer rehab period.

A 30 year old chap presents to the ED following a jump fom height, sustaining a right undisplaced extra-articular calcaneal fracture. He is not severely swollen, and you are happy to discharge him, with out-patient follow up. You wonder whether he should be placed in a below knee POP, or remain NWB without a POP, as then he will not lose movement at the ankle joint.

Should children with ADHD and normal intelligence be routinely screened for underlying cytogenetic abnormalities?

You are assessing a 7 year old boy with attention and behaviour difficulties, and poor school performance. He has an average IQ and meets the diagnostic criteria for attention deficit hyperactivity disorder (ADHD). There is no evidence of developmental delay, dysmorphism, or other physical abnormalities and no relevant family history. Parents are keen on investigation for a "cause" for his problems. You are aware that some chromosomal and cytogenetic abnormalities may be associated with ADHD. You wonder if you should check karyotype and look for cytogenetic abnormalities with genetic implications for the family.

Should bubble baths be avoided in children with urinary tract infections?

Bubble baths are common products used by parents. Medical professionals, from students to consultants, can be heard across clinics throughout the country, advising parents to avoid the use of bubble bath to help prevent another urinary tract infection in their child. In our simple survey we could not find any labels on bubble baths intended for children or babies that reinforced this advice. Are we, as general paediatricians, providing unsubstantiated advice to our patients and parents?

What are the long-term results of cardiac valve replacements in left sided endocarditis with a history of i.v. drug abuse?

You are about to perform an urgent aortic valve replacement in a 32-year-old male who has been treated for endocarditis with destruction of the native aortic valve, leading to congestive heart failure. The patient has been an i.v. drug user (IVDU) for several years. He has a supportive family and has already been accepted into a methadone program in your community. In order to decide whether you should insert a mechanical heart valve or a tissue valve, you would like to learn about the long-term results of valve replacement in this clinical setting.

Bupivocaine alone adequate for speed of analgesia in femoral nerve block for fractured midshaft femur in children

An 8-year-old boy presents to the emergency department with an isolated midshaft femoral fracture. You were previously taught to use a combination of lignocaine and bupivocaine, as the lignocaine would have immediate effect followed by the longer action of bupivocaine. The anaesthetic registrar disagrees and wants to use bupivocaine alone.