Biomedical subjects

B L Smith

Publications and source records attributed to B L Smith.

At least 271 records · Page 15Linked to original sources

PubMed1977

Effect of final-syllable position on vowel duration in infant babbling.

Previous research has suggested possible speech-production- and/or speech-perception-oriented causes for the temporal phenomenon referred to as final-syllable vowel lengthening, yet little conclusive evidence has been adduced for either possibility. The present study represents an attempt to provide additional information concerning the nature of this phenomenon by approaching the issue from a developmental perspective. A much smaller amount of final-syllable vowel lengthening was observed in the premeaningful vocalizations of a number of very young infants than in phonetically comparable utterances produced by adult speakers of English. It is concluded on the basis of this preliminary evidence that extensive final-syllable lengthening observed in the productions of adult speakers of English seemingly constitutes a learned behavior.

Auditory Perception↗

PubMed1977

Effects of intraruminal administration of zinc on gastric acid secretion in sheep.

Intraruminal administration of zinc sulphate at 100 and 200 mg Zn/kg bodyweight resulted in central and peripheral effects in sheep. Feed intake was reduced, pH of the duodenal contents elevated and the secretion of acid from isolated pouches of the abomasum doubled. Suggested explanations include a local inhibitory effect of zinc on abomasal acid secretion elevating duodenal pH and a resultant increased release of gastrin stimulating secretion from the pouches.

Abomasum↗

PubMed1976

Day stay anaesthesia. A follow-up of day patients undergoing dental operations under general anaesthesia with tracheal intubation.

Ninety-five patients who had undergone extensive dental surgery as day-patients were followed-up by questionnaire. An unexpectedly high incidence of after-effects was found; 78% of the patients went home with at least one persistent symptom due to the anaesthetic. A particularly high incidence of headache was found. There appeared to be no correlation of the symptoms with age, sex or nature or duration of the operation.

Adolescent↗

PubMed1976

Efficacy of a nerve stimulator in regional analgesia; experience in a resident training programme.

Forty interscalene brachial plexus regional blocks and twenty sciatic-femoral lower limb blocks were performed by 1st and 2nd year anaesthesia residents. Nerve trunk location was equally but randomly divided between use of a peripheral nerve stimulator and reliance on paraesthesiae. The stimulator group were sedated prior to nerve block while the non-stimulator group were similarly sedated after nerve block. There was no significant difference either in the number of needle insertions required for nerve location, or in the success rate, between stimulator and non-stimulator techniques. It is concluded that the stimulator is not a useful adjunct for nerve location, except in those patients who are unable to co-operate in eliciting paraesthesia. In such patients the stimulator permits a comparable success rate.

Anesthesia, Conduction↗

PubMed1975