Issue 18.
Welsh Health
Evidence Bulletins
T he Health Evidence
Bulletins - Wales act as signposts to the best current evidence across a broad range
of evidence types and subject areas.
Where information from randomised controlled trials
is available it is included. However, many health issues do not lend themselves easily to
investigation, or have not yet been studied, by this method. In these cases, high quality
evidence has been sought from observational and other studies.
The Bulletins are applicable to a wide variety of
settings;
to assist Health Authorities with the planning and
commissioning of healthcare
to inform clinical practice
to assist continuing education and audit
to inform the development of the undergraduate and
other curricula
to identify potential areas for further research
Bulletins currently available are underlined. Others
will become available during the year.
Cancers
Cardiovascular diseases
Healthy environments
Healthy living
Injury prevention
Learning disability
Maternal and early child health
Mental health
Oral health
Pain, discomfort and palliative care
Physical disability and discomfort
Respiratory diseases
The easiest way to keep up to date is via their web site at: http://hebw.uwcm.ac.uk/
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Medscape on the Net
One of the editors of this journal (NJV)
would like to recommend a visit to Medscape, for those of you who browse the Internet. As
a public health consultant I was delighted to get ECG of the week correct, having not
looked at one in anger for 20 years. It will be therefore be easy for anyone else out
there and therefore good for your ego, and possibly some of your clinical skills.
Medscape is one to watch as it has just been taken over by George
Lundberg, who, as readers of the BMJ will know, was recently sacked from JAMA for
publishing an article on sexual activity relevant to President Clintons recent
danger of impeachment.
You can imagine that it's a lively site. Recommended. You can reach it
and sign on for free at
http://www.medscape.com/
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NICE to sort clinical "Wheat
from Chaff"
This was the heading of a recent BMJ article about the National
Institute for Clinical Excellence (NICE). Professor Sir Michael Rawlins, its chairman,
said the most important thing on his agenda is to gain the early confidence of the health
professions, as well as the public and parliament.
Sir Michael appeared before the Commons health committee as the
government issued a discussion paper on how NICE intends to proceed. In a foreword, the
health secretary, Frank Dobson, states that NICE will sort out the "wheat from the
chaff" and protect patients from outdated and inefficient treatment.
Sir Michael described the functions of NICE as: to appraise all new
technologies for their clinical and cost effectiveness and advise whether they should be
in routine use in the NHS or not; to disseminate clinical guidelines based on clear
scrutiny of the scientific literature in a form that is practical and useful to health
professionals; and thirdly, to develop and promote clinical audit.
The discussion document gives details of how the NICE appraisal process
will work. Initially it will select about 20-30 new interventions each year for appraisal
and recommend which are suitable for routine clinical use in the NHS.
The document, Faster Access to Modern Treatment, is being sent to a
wide range of professional groups for comment.
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The role of the routine
neonatal examination
This is a shortened version of a recent BMJ article. Routine neonatal
examination is universally accepted as good practice. No one has yet been brave enough to
address the question with a randomised trial. A study from Aberdeen tells us firmly that
one examination is sufficient, there is no need for a follow-up examination.
No benefits from a second examination were detected in a sample of
10,000 babies, though the study lacked the power confidently to compare outcomes for
congenital dislocation of the hip and serious heart disease.
The first examination is usually carried out by junior doctors and is
of uncertain quality. So what is the evidence in support of routine neonatal examination?
The examination and its individual components are, therefore, a form of
screening and can be evaluated as such. Few of the target conditions meet the classic
criteria for a screening test. Much of the anxiety expressed by many general practitioners
about examining new-born infants is focused on two conditions, heart disease and
congenital dislocation of the hips.
The Aberdeen group, like many others, noted that several cases of hip
dislocation were missed. Screening for congenital dislocation of the hip is still
problematic and primary screening by ultrasound is not the answer. The most serious
forms of congenital heart disease usually present within the first few days and demand
prompt investigation. The concern is about missing defects that might present after the
baby leaves the hospital and have rapidly progressive symptoms.
Unfortunately, even the most expert examiner will miss many cases.
Perhaps greater awareness among parents and the primary care team about the need to take
non-specific symptoms seriously would be a better way of identifying these babies.
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A few useful
phrases in the clinical effectiveness field
Phrase: It has long been known - Translation: I haven't bothered to
look up the reference.
Phrase: It is generally believed. - Translation: A couple of other guys
think so too
Phrase: The 4 hour sample was not studied - Translation: I dropped it
on the floor
Phrase: The 4 hour determination may not be significant - Translation:
I dropped it on the floor, but scooped most of it up
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