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Biomedical subjects

P M Hunter

Publications and source records attributed to P M Hunter.

6 recordsLinked to original sources

Can mandatory pretransfusion approval programmes be improved?

To improve the appropriateness of blood-component prescribing, a mandatory haematologist pretransfusion approval programme of all non-red-cell components was instituted. This was associated with a 33% decrease in the units of fresh frozen plama (FFP) transfused. Platelet transfusions increased but utilization of both platelets and FFP are now the lowest of the six comparable blood transfusion regions in New Zealand. A subsequent concurrent audit, using preset criteria, of FFP, cryoprecipitate and platelet usage over a 3-month period showed that further reductions in blood component usage could still be achieved, despite the continuing pretransfusion approval policy. This audit showed that 33% of FFP and 30% of cryoprecipitate units transfused were inappropriately given, despite prior haematologist approval. Hospital transfusion practices can be improved by mandatory blood-component pretransfusion approval but concurrent auditing of this programme is required to identify and correct continuing inappropriate blood-component prescribing. Haematologists need to agree on blood-component indications prior to instituting a pretransfusion approval programme in order to provide optimal management.

Blood Banks↗

Bedside monitoring of respiratory function.

The primary focus of any monitoring technique is to alert the practitioner to change. Assessment, evaluation, and analysis of the data provide the basis for clinical decision-making. Monitoring spontaneous ventilatory parameters offers an overall assessment of the effectiveness of maintaining pulmonary gas exchange. Blood gas analysis provides the cornerstone for evaluating cardiopulmonary status and is an essential tool. The evaluation of dead space and shunt provides a foundation for differentiation between ventilation and perfusion mismatching. Collectively, these assessments focus on the stability of the cardiovascular and respiratory systems. Although modern technology is continually producing increasingly sophisticated methods of respiratory function monitoring, experienced observation by the clinician is still the key to successful assessment.

Blood Gas Analysis↗