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Biomedical subjects

John M O'Donnell

Publications and source records attributed to John M O'Donnell.

7 recordsLinked to original sources
PubMed2004

Arterial cannulation: a critical review.

Arterial catheterization for hemodynamic monitoring is used widely in clinical management. Complications of connulation have been recognized since introduction of the technique. This review examines radial, brachial, axillary, and femoral cannulation sites. Waveform distortion, adjacent structure injury, and the incidence of thrombus are described. Computerized subject heading searches were executed using CINAHL and MEDLINE databases. Searches encompassed English-language, randomized, controlled trials, reviews, practice guidelines, and meta-analyses published from January 1997 to February 2002. Additional studies were identified via review of retrieved literature. Radial cannulation is subject to inaccuracy and thrombus formation, although a benefit is dual circulation. The brachial site is subject to inaccuracy, lacks collateral circulation, and is associated with median nerve injury. Axillary cannulation provides data closely approximating aortic pressure and poses minimal thrombotic risk but is associated with brachial plexus compression. Femoral cannulation provides a pulse contour approximating aortic with minimal thrombotic risk. There is little evidence to show increased incidence of catheter-related systemic infection at this site.

Axillary Artery↗
PubMedDate not supplied

Fathers in child welfare: caseworkers' perspectives.

Five focus groups substantially agreed about the lack of paternal participation in child welfare services and the reasons for low paternal involvement. The groups had considerable disagreement about whether child welfare professionals should address this issue. Some caseworkers believed that all fathers and mothers should be treated identically with respect to services to be offered and time frames for services; other caseworkers thought that the special circumstances of some fathers, such as lack of child care experience, called for service approaches that differ from those for mothers. Another disagreement was whether more fathers would be more involved if services were gender sensitive, that is, if agencies provided male caseworkers for fathers and had father-only services. Much of the debate focused on pragmatic considerations (would gender-sensitive services improve paternal participation and outcomes?), although some participants were concerned about equity (would such services give fathers an advantage in disputed custody cases?).

Child Custody↗