Releases Saturday 29 April 2000
No 7243 Volume 320

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(1) CHANGING TO A NEW OPERATION IN YOUNG
BABIES MAY COST LIVES WHILE SURGICAL
TEAMS LEARN THE NEW TECHNIQUE

(2) "DO NOT RESUSCITATE" DECISIONS
DISCRIMINATORY AND PREJUDICIAL

(3) VIAGRA IS COST EFFECTIVE AND SHOULD BE
MORE WIDELY AVAILABLE

(4) SPEED LIMIT MUST BE REDUCED TO PREVENT
"UNACCEPTABLE" LEVELS OF PEDESTRIAN
DEATHS

(5) INEQUALITY - IT'S NOT ALL JUST IN THE HEAD



(1) CHANGING TO A NEW OPERATION IN YOUNG
BABIES MAY COST LIVES WHILE SURGICAL
TEAMS LEARN THE NEW TECHNIQUE

(Scientific, ethical, and logistical considerations in introducing
a new operation: a retrospective cohort study from paediatric
cardiac surgery)
http://bmj.com/cgi/content/full/320/7243/1168

Research in this week's BMJ says that deaths soon after a
new operation in new born babies can exceed deaths
expected after a more established procedure, particularly
when the new operation is first introduced. This need not
mean that either the surgery or the surgical team are unsound,
concludes the research, but that safeguards should be in place
to minimise the risk to patients.

Researchers say that doctors and relatives need to accept
both the risk implications of the change over period and that
operations can differ in their profiles of early and late hazard.

Bull and colleagues from Great Ormond Street Hospital,
London, reviewed the initial impact on death rates of a new
surgical technique for congenital heart disease that is now
taken for granted. They reviewed the outcome of 325 babies
with transposition of the great arteries before during and after
their treatment was changed from the Senning operation to
the Arterial Switch surgery between 1978 and 1998. The
"new" operation involved more difficult surgery on younger
babies of less than three weeks old, with greater short term
risks, but anticipated greater long term benefits.

The results showed that early deaths were lower in 1998 with
the Switch operation than in 1978 with the Senning
procedure. However, while arterial Switch was gradually
being adopted between 1986 and 1992, death rates were
higher among those patients scheduled for Switch than among
those scheduled for the Senning operation. But follow up has
shown that premature deaths later in life have been more
common after the older Senning procedure as had been
predicted at the time the new operation was first offered.

The authors say that in children's surgery in particular,
doctors often have to make recommendations that aim to
improve life expectancy when there is only scant evidence
about later risks of treatment. This means that every effort
must be made to minimise the early risk to patients and to
explain the aims of treatment and the hazards and
uncertainties involved to the relatives.

Contact:

Dr Catherine Bull, Cardiothoracic Unit, Great Ormond Street
Hospital, London.
Email: C.Bull@gosh-tr.nthames.nhs.uk

(2) "DO NOT RESUSCITATE" DECISIONS
DISCRIMINATORY AND PREJUDICIAL

(Do not resuscitate decisions: flogging dead horses or a
dignified death? [Editorial])
http://bmj.com/cgi/content/full/320/7243/1155

Evidence suggests that doctors may be using "do not
resuscitate" orders to uphold their own prejudices and this
reduces quality of care, writes Shah Ebrahim from the
University of Bristol's Department of Social Medicine, in this
week's BMJ.

Citing research published in America, Professor Ebrahim
writes that over two thirds of patients with "do not
resuscitate" (DNR) orders have not been involved in making
these decisions. And DNR patients are 30 times more likely
to die than other patients, irrespective of the severity of their
illness or other risk factors, he says. US data show that DNR
orders tend to be used for patients who are black, alcoholic,
non-English speakers, or who have HIV. This suggests,
writes Professor Ebrahim, that doctors operate on
stereotypes of whose life is worth saving.

In the UK guidance from the BMA, the Resuscitation Council
and the Royal College of Nursing is regularly flouted, and
ageism is alive and well in the NHS when it comes to DNR,
contends professor Ebrahim. Audit and education over the
past 30 years have done little to stem prejudice in the health
service against the elderly, he says. Legislation outlawing the
practice looks to be the only solution, he concludes.

Contact:

Professor Shah Ebrahim, Department of Social Medicine,
University of Bristol.
Email: shah.ebrahim@bristol.ac.uk

(3) VIAGRA IS COST EFFECTIVE AND SHOULD BE
MORE WIDELY AVAILABLE

(Cost utility analysis of sildenafil compared with
papaverine-phentolamine injections)
http://bmj.com/cgi/content/full/320/7243/1165

(Valuing the effects of sildenafil in erectile dysfuntion
[Editorial])
http://bmj.com/cgi/content/full/320/7243/1156

Viagra (sildenafil) is cost effective and should be more widely
available on prescription, contends a cost-benefit analysis in
this week's BMJ.

Stolk and colleagues from the Institute for Medical
Technology Assessment in Rotterdam, The Netherlands,
compared the costs and effects of Viagra pills with injections
used once a week for the treatment of erectile dysfunction
over a projected period of five years. The authors used
clinical results from a large published trial, graded evaluations
from 169 randomly selected members of the general public,
and measured medical treatment, and societal costs to
calculate the cost per quality adjusted life year (QALYs).

Treatment with Viagra was more expensive than treatment
with injections, especially if used more than once a week. But
viagra produced more QALYs, partly because more people
are treated with it than with injections. Altogether, the ratio of
cost to usefulness "cost utility ratio" worked out at £3639 for
the first year of life gained, becoming less expensive each
successive year. This, say the authors, is well within the
accepted limits for such a ratio, usually put at between £8000
and £25,000. And, they add, less than the ratios for breast
screening at almost £7000 per QALY and kidney
transplantation at almost £5000 per QALY.

An accompanying editorial, however, by Nick Freemantle, of
the Medicines Evaluation Group at the University of York,
suggests that using QALYs to assess cost effectiveness is
essentially flawed, because the method relies on too many
assumptions and, in this context, is not comparing like with
like. He points out that in the UK, the National Institute for
Clinical Excellence (NICE) has not yet decided to use
QALYs to inform its recommendations. Simply assessing
each treatment on merit and making recommendations on the
basis of clinical effectiveness and cost is a more honest and
transparent approach, he suggests.

Contacts:

Dr Elly Stolk, Institute for Medical Technology Assessment,
Erasmus University, Rotterdam, The Netherlands.
Email: stolk@bmg.eur.nl

Dr Nick Freemantle, Centre for Health Economics,
University of York.
Email: nf2@york.ac.uk

(4) SPEED LIMIT MUST BE REDUCED TO PREVENT
"UNACCEPTABLE" LEVELS OF PEDESTRIAN
DEATHS

(Reducing the speed limit to 20 mph in urban areas
[Editorial])
http://bmj.com/cgi/content/full/320/7243/1160

Speeding kills around 1200 people on UK roads every year:
140 of those deaths are child pedestrians. If any impact is to
be made on these "unacceptable" figures, speed limits in
built-up areas must be reduced to 20 miles per hour, argues
Paul Pilkington, public health specialist for the South West
Region, in this week's BMJ.

Almost three quarters of motorists exceed the current 30 mph
(48kph) urban speed limit, and two thirds of all serious or
fatal accidents happen in areas with the 30 mph limit,
contends Mr Pilkington. He provides plenty of evidence to
show that lower speeds can cut deaths and the number of
traffic accidents by around two thirds. Experiments in the UK
and in Europe using the lower 20 mph speed limit have
shown dramatic falls not only in the number of casualties, but
also in air and noise pollution. Mr Pilkington says that there is
also mounting evidence of public support for such a move.

But he cautions that decisions to lower speed limits should
not be arbitrary or driven by political motives. Rather, they
should be "based on sound, established road safety
principles," as recommended by the Association of British
Drivers, and should be accompanied by more stringent
attitudes to driving offences in the law courts.

Contact:

Paul Pilkington, London School of Hygiene and Tropical
Medicine, London.
Email: paul.pilkington@lshtm.ac.uk

(5) INEQUALITY - IT'S NOT ALL JUST IN THE HEAD

(Income inequality and mortality: importance to health of
individual income, psychosocial environment, or material
conditions)
http://bmj.com/cgi/content/full/320/7243/1200

Policies to reduce inequalities in health should not confuse the
structural causes of inequality with their subjective
consequences, says an article in this week's BMJ.

Lynch and colleagues from the Universities of Michigan and
Bristol analysed the evidence for a link between income
inequalities and health using three different published
interpretations: differences in individual income; psychosocial
environmental factors; and neo-material considerations.

The authors use the metaphor of plane travel: a psychosocial
interpretation holds that Economy class travellers have worse
health after a flight than First class travellers because of the
negative emotions engendered from knowing that the First
class passengers are having a better time of it; abolishing the
different classes of travel would solve the problem. The
neo-material approach holds that Economy travellers have
worse health simply because they have cramped seats and
can't sleep; upgrading conditions in Economy class would
take care of that.

Although psychosocial factors cannot be dismissed, conclude
the authors, it is hard to see how these could inform public
policy to reduce health inequalities. But a combination of
income differentials and material conditions recognises the
impact of political and economic processes on individual
income and subsequently on personal and public resources,
such as healthcare, education, social welfare and working
conditions. The authors conclude that strategies to ensure
more equitable distribution of public and private resources
would do most to reduce health inequalities and improve
public health in rich and poor nations alike.

Contact:

Professor John Lynch, Department of Epidemiology, School
of Public Health, University of Michigan, USA.
Email: jwlynch@sph.umich.edu


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