Biomedical subjects
G de Lacey
Publications and source records attributed to G de Lacey.
The effect on patients of non-referral for skull radiography following mild head injury.
This paper assesses the attitude of 705 patients who attended the Accident department of a large metropolitan district general hospital, with a mild head injury and who were not referred for skull radiography. A questionnaire was sent to patients 5-7 months after they had attended. Fifty-one per cent had expected an X-ray, and when this did not occur, the majority of this group (63 per cent) left the Accident department disappointed. Furthermore, the duration of symptoms in this group was prolonged. The introduction of guidelines may reduce clinically unnecessary X-ray examinations, but some of the consequences may not be fully appreciated. In this study, a significant number of patients were dissatisfied with the lack of X-ray referral. The main cause for the associated prolongation of symptoms is not clear, but a contributory factory may be that lack of referral for radiography led to anxiety concerning the thoroughness of their management.
Posters for accident departments: simple method of sustaining reduction in x ray examinations.
OBJECTIVE: To assess whether a simple strategy would sustain a reduction in the number of unnecessary x ray examinations. DESIGN: Use of posters to display guidelines encouraging the more effective use of radiology in patients with head injuries, twisted ankles, neck injuries, and abdominal pain. SETTING: Accident department of a large metropolitan district general hospital. PATIENTS: 15,875 patients attending the accident department over two years. MAIN OUTCOME MEASURE: Proportion of patients having radiography. RESULTS: Referrals for skull radiography fell from 56% to 20% and those for abdominal radiography fell from 31% to 7%. Referral patterns for adults attending with twisted ankles and cervical spine injuries did not change. Reductions were sustained over two years. CONCLUSION: Carefully designed posters provide a simple method of reducing unnecessary x ray examinations.
Radiology guidelines in the accident department.
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The basic radiology system: a challenging role in a changing world.
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Testing a policy for skull radiography (and admission) following mild head injury.
There has been, and continues to be, conflicting advice regarding skull radiography following an apparently uncomplicated head injury. Policies on admission are often ill defined. In 1983, representatives of the Royal College of Radiologists met neurosurgeons at a seminar in Harrogate organized by the DHSS and laid down clear, but little publicized, joint recommendations: "The Harrogate Criteria". The survey described here evaluated an existing liberal policy for skull radiography (and a loose policy for admissions) against these recommendations, and it was concluded that the number of patients having skull radiography (74% of head injury attenders) was excessive. Measured against the "Harrogate Criteria", requests for 36% of the adult and 47% of children's skull radiographs did not fulfil these criteria. As a corollary, it was also concluded that loose admissions policies could usefully be altered to comply more closely with the Harrogate recommendations. This would not necessarily reduce the numbers admitted, but would provide casualty officers with a framework on which to base this crucial aspect of clinical decision making, where presently there is often very little structure at all. The authors suggest that all the options have not been fully explored, and that a simple but important alteration to the Harrogate guidelines would provide an even closer link between policy on skull radiography and patient admission. Specifically, most patients who are to be admitted do not need skull radiographs.
"Diaphragm-like" strictures of the small bowel in patients treated with non-steroidal anti-inflammatory drugs.
The radiological findings are described in four patients who developed strictures of the small bowel, and who had received non-steroidal, anti-inflammatory drugs (NSAIDs) for 1.5-15 years. Clinical presentation was that of subacute small bowel obstruction. Small bowel barium studies showed multiple discrete strictures. Some strictures were indistinguishable from those of regional enteritis. Others however were narrow "diaphragm-like" septae encroaching on and markedly narrowing the ileal lumen, and shown histologically to be due to submucosal fibrosis. It is suggested that these strictures are likely to be consequent on NSAIDs administration and that radiologists and surgeons need to be aware of these "diaphragms" which can be very difficult to detect on barium examination, either small bowel follow-through or enteroclysis, and at laparotomy.
Prostatism: how useful is routine imaging of the urinary tract?
The clinical effects of routinely imaging the renal tract (by intravenous urography and ultrasonography) were evaluated prospectively in 128 consecutive patients with prostatism. Patients with haematuria, previous renal disease, or infection were excluded. Urologists completed a standard questionnaire in the patient's notes stating the diagnosis and the intended management. The patient then had intravenous urography and abdominal ultrasonography, urine was analysed, and plasma urea and serum creatinine concentrations and acid phosphatase activity were determined. From six months to a year later the eventual management was compared with the intended management to see the effect of these routine investigations on the outcome. For four out of 28 patients whose management was intended to be conservative the decision was changed; for only three of them was this because of the results of urography, ultrasonography, and biochemical determinations. For 31 patients the management was to be decided by cystoscopic findings, and for none of these was the final decision altered by the results from the investigations after the initial consultation. Similarly for five patients who were assessed urodynamically the final management was not changed by the results of these investigations. The planned management was changed in three of the remaining 64 patients but not because of the results of the initial investigations. Thus no indication was found for either routine urography or ultrasonography, but the total abandonment of imaging of the renal tract would be unwise. Patients scheduled for conservative management (about a quarter of the patients in this study) should have ultrasonography to detect unsuspected hydronephrosis, but in all other patients urography or ultrasonography, or both, is an unhelpful ritual. Moreover, urography is becoming more expensive, and has a recognised (albeit small) mortality.
Diverticular disease (adenomyomatosis) of the gallbladder: a radiological-pathological survey.
Seventy consecutive gallbladders removed at surgery were examined radiologically and pathologically. Fifteen (21%) of the operative specimens showed naked-eye changes of adenomyomatosis. The main conclusions drawn from this study are that this abnormality is present in a much higher proportion of gallbladders removed at surgery than is generally realised, and that the pathogenesis is primarily an abnormality of muscle contractions, with a strong similarity to diverticular disease of the colon. Diverticular disease of the gallbladder might well be the most appropriate name for this condition. The results of a post-operative clinical assessment of patients with diverticular disease are also presented. But this represents a small number of patients and larger, perhaps multicentre, surveys would be required in order to assess the clinical significance of this interesting abnormality.
How accurate are quotations and references in medical journals?
The accuracy of quotations and references in six medical journals published during January 1984 was assessed. The original author was misquoted in 15% of all references, and most of the errors would have misled readers. Errors in citation of references occurred in 24%, of which 8% were major errors--that is, they prevented immediate identification of the source of the reference. Inaccurate quotations and citations are displeasing for the original author, misleading for the reader, and mean that untruths become "accepted fact." Some suggestions for reducing these high levels of inaccuracy are that papers scheduled for publication with errors of citation should be returned to the author and checked completely and a permanent column specifically for misquotations could be inserted into the journal.
Reducing errors in the accident department: a simple method using radiographers.
The assessments by radiographers of 1628 consecutive patients referred for radiography in the casualty department were analysed. The radiographers missed abnormalities in the radiographs in 68 of the cases. Casualty officers missed abnormalities in 63 cases, but only 35 patients were common to both groups. Twenty eight of the radiographs interpreted wrongly by casualty officers were interpreted correctly by radiographers; 16 of these 28 were thought by the accident and emergency consultant to be clinically important. It is suggested that a system whereby radiographers signal abnormalities should be standard practice.
A survey of accident and emergency reporting: results and implications.
Surveys have shown a consistent error rate in the detection of radiographically demonstrable abnormalities by casualty officers. A high incidence of medical litigation is related to casualty departments. For these reasons, a survey of hospitals in England and Wales was carried out to determine when and whether accident and emergency radiographs are reported. The practice in 146 hospitals was analysed. It was found that two-thirds of hospitals report all radiographs within 48 h. Seven per cent of hospitals either do not report any radiographs, report only radiographs of certain areas, or delay reporting for over 1 week. It is suggested that the patients attending as many as a quarter of all hospitals as casualties are at increased risk from errors which will inevitably be recognised late, and that these errors are directly attributable to shortage of staff.
Preliminary colon cleansing for small-bowel examinations: results and implications of a prospective survey.
The findings in 133 consecutive patients having a small-bowel barium follow-through examination are presented. Two conclusions are drawn: colon cleansing does not decrease transit time to the caecum and colon cleansing does not affect the examination quality.
Penetrating injuries: how easy is it to see glass (and plastic) on radiographs?
The radiopacity of objects commonly associated with penetrating wounds and made from modern glass was assessed. It is concluded that all glass fragments should be detected because they are all radiopaque. Occasionally thin slivers of glass may be difficult to detect, but should be visualised with good radiography and careful scrutiny. Plastic from the housing of motor vehicle lamps is not radiopaque.
Value of routine chest radiography in an acute geriatric unit.
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Should cholecystography or ultrasound be the primary investigation for gallbladder disease?
The conclusions drawn from a prospective survey of 500 patients examined by cholecystography (OCG) and ultrasound (UCG) are presented. First, both procedures were found to be highly accurate in detecting calculi, with false-negative rates of 1%. Secondly, if OCG is abandoned in favour of UCG, most acalculous adenomyomatosis (and many polyps) will not be diagnosed. If acalculous as well as calculous disease is regarded as clinically important, fluoroscopic OCG is the examination of choice. However, if a clinician wishes solely to find or exclude stones the investigations are equally accurate. Thirdly, since some calculi and some acalculous disease will be missed by either technique, serious consideration should be given to the further investigation of all gallbladders considered normal by either examination. A protocol is described which, though unorthodox, enables a decision on the status of the gallbladder to be made on a single visit to the radiology department.