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Biomedical subjects

P Spiers

Publications and source records attributed to P Spiers.

32 records · Page 2Linked to original sources
PubMed1993

An evaluation of the effect of vasodilatation on oxygen saturations measured by pulse oximetry and venous blood gas analysis.

Measurements of arterial oxygen saturation were estimated using a pulse oximeter under conditions of reactive hyperaemia in the arms of 10 volunteers. Oxygen saturation measured by pulse oximetry was significantly lower, and venous oxygen saturation measured by co-oximetry was significantly higher, in the hyperaemic arm than in the other arm. Pulse oximeters analyse the pulsatile component of blood flow and exclude nonpulsatile causes of absorption in estimating arterial oxygen saturation. The pulsatile component is assumed to be purely of arterial origin. However, other vessels may pulsate when vasodilatation occurs and pulse oximeter saturation readings taken under these conditions may not give a true reflection of arterial saturation.

Arm↗
PubMed1977

The disruption of marijuana intoxication.

Ninety-six males Ss were divided into four drug conditions; coltsfoot, placebo, marijuana low dose, and marijuana high dose. Half of the Ss smoked marijuana while listening to music in a relaxing environment, and half smoked marijuana in the same environment but had two 10-min periods of aversive-noise superimposed over the music. A subjective measure of intoxication demonstrated significant drug and environmental group effects with suppression of self-report of intoxication being especially strong for the marijuana low dose noise group. The usual positive correlation between subjective measures and pulse rate measures of marijuana intoxication was interfered with by the noise effect. Although subjective ratings were suppressed, the noise group demonstrated significantly higher pulse rates than the music group. The results are discussed in terms of the effect of extraneous factors on marijuana intoxication, the significance of dosage in this type of research, and the nature of marijuana intoxication.

Adolescent↗
PubMed1977

Some personality differences among the multidisciplinary team.

Professional and student psychologists, social workers, physiotherapists and occupational therapists were administered a demographic questionnaire, the Dogmatism Scale and the Personality Research Form. Significant and trend differences on each of these measures were obtained between the four professional groups, the professional and student groups and the professional groups and the norms for the measures. The possible role of these differences in the operation of the multidisciplinary team is discussed.

Authoritarianism↗