Biomedical subjects
Publications and source records attributed to A Henderson.
We report a case of a Nepalese who developed a recrudescence of malignant falciparum malaria whilst taking systemic corticosteroids. The malaria was resistant to chloroquine at the RI level, the first such case reported from BMH Dharan.
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A highly purified preparation of hyaluronidase (GL enzyme) was given in a double-blind, placebo-controlled, randomised study to 192 consecutive patients within 12 h of suspected myocardial infarction. Compared with those receiving placebo, patients with definite myocardial infarction given GL enzyme had significantly less change in QRS complexes; in those with anterior infarction the development of Q waves was less prominent. At 4 months the overall mortality among those with definite and possible myocardial infarction receiving GL enzyme (6 out of 83 patients, 7.2%) was lower than that in those receiving placebo (11 out of 79, 14%); this difference was not significant. No adverse effects were observed.
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The third internal repeat (IR3) simple repeat array in Epstein-Barr virus (EBV) DNA has a high degree of homology to a reiterated component of cell DNAs. 32P-Labeled human or mouse DNAs hybridize to the IR3 sequence on Southern blots of viral DNA. EBV IR3 probe identifies many restriction enzyme fragments on Southern blots of human and mouse DNAs that have extensive homology to IR3. Cytological hybridization shows that IR3 is homologous to at least one region on each human chromosome except the Y chromosome.
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A young man who presented with bacterial meningitis and visual disturbance developed a left sixth nerve palsy due to an isolated sphenoidal sinus inflammation caused by Corynebacterium haemolyticum. Sphenoidal sinusitis and intracranial infection by C. haemolyticum are uncommon complications.
Clinical studies were performed with groups of patients with ischaemic heart disease, patients with hyperthyroidism, and normal subjects, to investigate the possibility of a beta blocker withdrawal syndrome, by measurments of heart rate under conditions of increased sympathetic drive provided by standing with vasodilatation or by Valsalva's manoeuvre. A rebound increase in heart rate to levels significantly higher than the control heart rate off treatment was observed 2-5 days after stopping one or more weeks' treatment with dl-propranolol (160 mg/day), atenolol (200 mg/day), acebutolol (400 mg/day) or oxprenolol (160 mg/day).
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We report 3 cases of polymyositis, confirmed by enzyme assay and muscle biopsy, complicated by serious cardiac disease. They showed progressive fascicular block, despite immunosuppressive therapy sufficient to control the skeletal muscle disease, culminating in complete heart block with syncope, requiring the implantation of a pacemaker. In addition, all 3 showed echocardiographic evidence of dilated cardiomyopathy.
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Because puerperal sepsis is the second most common cause of maternal death in Papua New Guinea some aspects of its aetiology and prevention have been investigated. 91% of 125 women with puerperal fever were found to have post-partum uterine infection. The anaerobes Bacteroides and Peptostreptococcus singly or together, were the commonest causes, while Streptococcus pyogenes was the predominant aerobic species. Antibiotic sensitivity patterns were established, and chloramphenicol was found to be the most active agent against anaerobic and most aerobic strains. Endocervical cultures obtained from 103 ante-partum and 50 afebrile post-partum women demonstrated all the species associated with post-partum genital infection in this study. An analysis of the records of all patients was made to determine the redisposing factors associated with puerperal fever; only operative delivery was found to be significant, especially when it followed prolonged labour. Metronidazole given to 72 women before induction of labour was associated with puerperal fever in 4%, compared with 21% in matched controls.
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Fourteen infants were each videotaped 7 times within the first 12 weeks of life to determine whether or not the asymmetrical tonic neck reflex had a role in placing their hands within their fields of vision. Infants' arms were more frequently out of the reflex position. Hands were within the peripheral visual field more often than in the focal visual field or not within the visual field. The proportion of observations that hands were in a particular visual field varied in accordance with the presence or absence of the reflex. A higher proportion of reflex observations occurred in the focal visual field, whereas a higher proportion of observations made when the infants were not in the reflex position occurred in the peripheral visual field. Further, the proportion of focal field observations in the reflex position was greater than the proportion of observations out of the reflex position for the first six of the seven ages. This study confirms that when infants are in the asymmetrical tonic neck reflex position, their hands are more likely to be in a position in which they can be visualized.