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Biomedical subjects

W R Murray

Publications and source records attributed to W R Murray.

90 records · Page 5Linked to original sources
PubMed1976

The relationship between alcohol and head injury and its effect on the conscious level.

The incidence of head injury has risen in recent years and now accounts for almost one-third of acute male surgical admissions to the Western Infirmary, Glasgow. A prospective study has established that in Glasgow alcohol is a major associated factor, 62% of males and 27% of females having detectable levels in the blood (greater than 5 mg/100 ml); in these patients the mean level was 193 mg/100 ml in men and 165 mg/100 ml in women. The alcohol level was significantly higher in patients who had had 'a fall under the influence', or had been the victims of an assault, than in those involved in traffic or other accidents. This suggests that alcohol may be an important contributroy cause of head injuries in this city. Depression of the conscious level occurred at blood alcohol levels aroung 200 mg/100 ml, but a significant number of patients in coma had a serious head injury.

Adolescent↗
PubMed1975

The surgical management of ingrowing toenail.

A retrospective review has been carried out on 200 randomly selected patients with ingrowing toenail in order to assess the surgical management and its results. There was a predominance of males between the ages of 11 and 30 with an ingrowing toenail. Despite the high recurrence rate following simple avulsion of the toenail, its place in the initial management of the condition is justified. As regards more definitive surgery, total proximal nail bed ablation was found to give the best results. Sepsis at the time of operation neither increased the recurrence rate nor caused severe postoperative sepsis. A surgical management policy for the treatment of ingrowing toenail is outlined and discussed.

Age Factors↗
PubMed1975

Arthrography for the assessment of pain after total hip replacement. A comparison of arthrographic findings in patients with and without pain.

Arthrography in twenty-five painful hips of twenty-one patients after total hip replacement and in fifty-three asymptomatic hips of forty-two patients after this procedure showed that arthrographic evidence of loosening was not always associated with pain. More than one-fifth of the asymptomatic hips had arthrographic evidence of loosening. Furthermore, the loosening shown by arthrogram could be confirmed in only seven of twelve hips that were subsequently explored. In addition, there was no apparent relationship between arthrographic loosening and the presence of a Trendelenburg sign. This study casts doubt on the value of an arthrogram in the diagnosis of the cause of pain after total hip replacement.

Hip↗
PubMedDate not supplied

An optimal real-time digital processor for the electric activity of muscle.

The electric activity of muscle generates a biologic signal that can be used to estimate muscle force. However, large-amplitude, low-frequency variations are frequently superimposed on estimates of muscle force that are based on myoelectric signals. Conventional myoelectric signal processors reduce this "noise" component by simple filtering, which adversely affects the speed of response of the force estimate. Based on a novel algorithm for processing raw myoelectric signals that optimally reduce these random fluctuations, a new myoelectric signal processor was developed with hardware-assisted digital microprocessor technology; two sets of four differential electrodes are sampled at a rate of 1 kHz to generate two independent estimates of muscle force. Use of this processor resulted in an almost fivefold improvement in precision of force estimate compared with estimates obtained from the conventional myoelectric processor. If the new device were reprogrammed slightly, the speed of response achieved could be as much as 20 times greater than that of the conventional analog processor.

Computers↗
PubMedDate not supplied

Onychocryptosis: principles of non-operative and operative care.

Onychocryptosis has many causal factors which contribute to the impingement of the nail edge with the soft tissue nail wall. The treatment protocol for ingrown toenail includes a regimen of conservative care, nail plate avulsion and nail bed ablation.

Adult↗
PubMedDate not supplied

Femoral prosthesis subsidence in asymptomatic patients. A stereophotogrammetric assessment.

A radiographic stereophotogrammetric technique (SPG) was used to evaluate quantitatively the presence of early femoral prosthesis subsidence after total hip arthroplasty (THA). This paper focuses on the measurement of subsidence in 12 patients who remained asymptomatic during the first two years after surgery. Only one of these had SPG estimated subsidence in excess of one millimeter at any timepoint. These findings are consistent with the conclusion that early postoperative subsidence is not a common finding among asymptomatic THA patients.

Hip Joint↗