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Biomedical subjects

M McSweeney

Publications and source records attributed to M McSweeney.

40 records · Page 3Linked to original sources
PubMedDate not supplied

Pressure-reduction products: making appropriate choices.

A comparison of the seven most commonly used pressure-reducing products across sacral, trochanter, and heel interface sites was conducted with 15 healthy volunteers. Effects of weight on product were also tested. Products were rank ordered by cost into low-, moderate-, and high-cost groups. A double repeated measures design was used to examine effects of products at interface sites. Mean pressures for all products at the sacral site were acceptably below the guideline. Four of the products had acceptable mean pressure readings at the trochanter site. No product had acceptable readings at the heel site. Significant main effects for product and site were found. A significant interaction between product and site was also found. Weight had no effect, either directly or in interaction with site or product. Moderate-cost products were found to be preferable at sacral and trochanter sites. At the heel site, cost groups did not differ.

Adult↗
PubMedDate not supplied

Effectiveness of pH measurements in predicting feeding tube placement: an update.

This paper reports further findings from an ongoing clinical study designed to evaluate the extent to which pH values of aspirates from feeding tubes can be used to differentiate between gastric and intestinal tube placement and gastric and respiratory tube placement. The sample consisted of 405 aspirates from small-bore nasogastric tubes and 389 aspirates from nasointestinal tubes, which were obtained from 605 subjects ranging in age from 18 to 94 years. Data were collected at the time of initial placement and again, when possible, after feedings were initiated. A total of 794 pH-meter readings were made concurrently with X-rays to determine feeding tube position. Gastric placement was successfully distinguished from intestinal placement of the feeding tubes on the basis of pH-meter readings (p < .0001). Approximately 85% of the 405 pH-meter readings from gastric fluid were between 0 and 6.0, while over 87% of the 389 pH-meter measurements performed on intestinal aspirates were greater than 6.0. Four aspirates from feeding tubes inadvertently placed in the respiratory tract (two in the pleural space and two in the tracheobronchial tree) were tested with a pH-meter, all had pH values greater than 6.5.

Adolescent↗