The tympanic region of the skull in extant pinnipeds: A pilot study of auditory morphological disparity using linear morphometric principal component analysis.

Pinnipeds are unique semiaquatic taxa possessing adaptations to hear efficiently both in water and on land. Research over the past century is extremely limited on the auditory apparatus morphology of pinnipeds, which include the Families Phocidae (true seals), Otariidae (sea lions/fur seals), and Odobenidae (walruses). Our extensive literature review revealed inaccurate terminology of this region, with details corresponding only to terrestrial taxa, and a severe lack of information due to very few current studies. This demonstrates the need for evaluation and comparison of the auditory morphologies of modern terrestrial and semiaquatic carnivorans in relation to hearing. This initial study compares tympanic bullar morphologies of Phocidae to other pinnipeds and representatives of terrestrial carnivoran families. Morphological correlations of the basicranial auditory region were also compared within phocid subfamilies. Eleven skull measurements and about eleven calculated ratios were included in multiple principal component analyses to determine what areas of the auditory apparatus had the most significant morphological variation. This is the first study using this methodology, especially in reference to the hearing adaptations of pinnipeds, specifically in phocids. Results demonstrate distinct trends in phocid bullar morphology relative to other pinnipeds. Analyses reveal that: (1) phocids generally have different bullar morphology than otariids and odobenids; (2) Neomonachus schauinslandi (Hawaiian monk seal) and Neomonachus tropicalis (Caribbean monk seal) have unique morphology compared to phocids and other pinnipeds. Future work with increased number of specimens will further substantiate these findings and both ontogenetic and sexual variations will be examined.

Retooling social work practice for high volume, short stay.

The re-engineered acute care environment that emphasizes managed care, reduced costs per case and shorter lengths of stay also demands innovative approaches to the delivery of social work service. As departments disappear and other professions compete for roles in counselling, discharge planning and community liaison, there is a real threat to the viability of the acute hospital as a setting for social work. This paper focuses on the adaptive skills needed for the restructured acute care context, including (1) the creation of key roles for social work on the multidisciplinary team, (2) pre-admission high-risk screening and discharge planning, (3) high volume recording, (4) solution-focused brief interventions, and (5) the development of community partnerships. These conceptual strategies are implemented differently in examples drawn from three distinct high-volume patient groups: reconstructive orthopaedics, high-risk fetal assessment and thoracic oncology.

Depressive symptoms in family caregivers of long-stay patients.

Factors contributing to depressive symptoms in a group of 67 family caregivers of hospitalized "long-stay" patients were investigated. Levels of depressive symptoms were quite high and were related to level of patient dependency, caregiver's health, feeling too many demands were being made on the caregiver, feeling torn between the patient's needs and the caregiver's own needs, not getting enough rest, amount of time spent in caregiving activities, feeling someone else could take over caregiving if necessary, and perceptions of staff. The factors contributing to depressive symptoms differed among spouses, children and other caregivers, but for all the strongest contributor was experiencing difficulty with staff.

Myocardial infarction patients in the acute care hospital: a conceptual framework for social work intervention.

This paper describes a conceptual framework for identifying myocardial infarction patients in the acute care hospital who are at risk for medical and psychosocial complications that may impede recovery. Because of their precarious medical status, these patients present special issues for social work practice. Psychosocial factors affecting outcomes are reviewed and interventive strategies are outlined. The crucial role of adaptive denial in recovery is highlighted.