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Biomedical subjects

J P Royle

Publications and source records attributed to J P Royle.

At least 37 records · Page 2Linked to original sources
PubMed1984

Doppler ultrasound detection of saphenofemoral and saphenopopliteal incompetence and operative venography to ensure precise saphenopopliteal ligation.

Recurrent varicose veins may result from inadequate assessment or inadequate surgery. In this study, 110 consecutive patients (165 limbs) were assessed pre-operatively for the presence or absence of reflux at the saphenofemoral (SF) and saphenopopliteal (SP) junctions by clinical assessment and by Doppler ultrasound. The pre-operative results where then compared with findings at the time of surgery. Doppler ultrasound as a means of predicting SF and SP incompetence was superior to clinical assessment. Doppler Doppler ultrasound detected 100% (two false positives) of incompetent SF junctions, and 100% (six false positives) of incompetent SP junctions, compared to the clinical detection of 72% (no false positives) and 64% (five false positives), respectively. Short saphenous venography was performed in 36 limbs in which SP reflux was suspected on clinical assessment and/or by Doppler ultrasound. It proved valuable in demonstrating the level and mode of termination of the short saphenous vein. This guided the placement of the skin incision.

Doppler Effect↗
PubMed1983

The use of directional Doppler ultrasound in the assessment of saphenofemoral incompetence.

The prevalence of saphenofemoral incompetence in a series of 105 consecutive patients undergoing saphenofemoral ligation as part of an operation for primary varicose veins was determined using a directional continuous-wave Doppler ultrasonic device. Saphenofemoral incompetence was correctly predicted in 97% of limbs. Using conventional clinical methods, incompetence was correctly predicted in 82% of limbs. This difference was highly significant (P less than 0.01 McNemar). It is concluded that a directional Doppler ultrasonic assessment is a useful aid in the pre-operative determination of saphenofemoral incompetence.

Adult↗
PubMed1983

Carotid plaques and retinal emboli: a clinical, angiographic and morphological study.

The angiographic criteria for the significance of a carotid lesion and the contribution of embolic versus haemodynamic factors in stroke pathogenesis are currently unresolved. This study evaluated correlations between the clinical features, presence of retinal emboli, angiographic appearance of the carotid bifurcation and morphology of the surgically excised plaque in 32 consecutive patients with symptomatic carotid lesions. Retinal emboli were found in 22% of patients, including some without a history of amaurosis fugax. The carotid plaques were complicated by ulceration, intraplaque haemorrhage and/or intraluminal debris in 91% of cases. The degree of carotid stenosis seen at operation correlated well with the angiographic estimate. Plaque complications could not be accurately predicted angiographically, however. The high frequency of plaque complications, and the presence of retinal emboli, suggested that embolisation was the likely pathogenetic mechanism of stroke in most of these patients.

Arteriosclerosis↗
PubMed1981

The saphenofemoral junction.

The position of the saphenofemoral junction was noted in 167 operations for flushing ligation of the long saphenous vein. In comparing the results of this study, considerable variance was found with regard to the site of the saphenofemoral junction reported in many anatomic and surgical texts.

Femoral Vein↗
PubMed1980

Intractable nasal carriage of methicillin-resistant Staphylococcus aureus.

The elimination of a methicillin-resistant strain of Staphylococcus aureus (MRSA) from the nose of a hospital staff member is described. Administration of antibacterial agents and intranasal inoculation of a sensitive strain of Staph. aureus failed to eradicate the MRSA. The MRSA disappeared after removal of the staff member from the hospital environment.

Carrier State↗
PubMed1980

Measurement plus judgement in examinations.

All examinations require the exercise of judgement at many points, whatever the method of scoring. In the Part 1 Examination of the Royal Australasian College of Surgeons these judgements are inextricably linked with policies on what is being tested (basic science or basic surgery, knowledge or application), what are the needs of practice and what must be covered in the discipline (choices of inclusion/exclusion on breadth/depth, core material/growing edge), and what are the levels of expectation (difficulty of questions, pass level). Examination scores have a measurable reliability. Confidence limits can be calculated on each candidate's score, but decisions must be made in the grey zone around the pass mark. If candidates did not enter the examination with equal chances because of external circumstances, judgements must be made about the level of disadvantage before deciding how to weight their score.

Australia↗
PubMed1976

An analysis of the results of the Part 1. Examination for the F.R.A.C.S.

An analysis of the results of the candidates undertaking the Part 1 F.R.A.C.S. examination between February 1973 and February 1975 inclusive is presented. Particular attention is paid to those who failed the examination at the first attempt, and their subsequent progress has been related to their performance at this time. The analysis forms the basis for the information which is now given to unsuccessful candidates and their clinical supervisors.

Australia↗