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Biomedical subjects

M Morrissey

Publications and source records attributed to M Morrissey.

32 records · Page 2Linked to original sources
PubMed1989

Female-headed households in Latin America and the Caribbean.

"Twenty-five Caribbean and Latin American nations were examined to determine the relationship between potential female headed families and other social indicators. Regression analysis reveals that women's labor market participation is associated with the proportion of families potentially headed by women. The share of girls in secondary school is also associated with the dependent variable. Social indicators of modernization and dependency were regressed on potential female-headed households. Neither approach alone explains the formation of female-headed families in the region."

Americas↗
PubMed1986

Internal work and physiological responses during concentric and eccentric cycle ergometry.

Internal mechanical work during cycling, required to raise and lower the legs and change their velocities, is shown to be an important factor when interpreting physiological responses to cycle ergometer exercise. The internal work required to move the legs during concentric and eccentric cycle ergometry at different speeds and workloads was calculated from segmental energy changes determined using cinematography and directly using an eccentric ergometer. The mean internal work rates obtained at pedal frequencies of 30, 60 and 90 min-1 were 11.5, 20 and 62 W respectively. When these estimates were added to the external work rates, they increased concentric and decreased eccentric work rates. The largest differences were seen at low work rates and high pedal frequencies during which concentric work rates increased by 51% and eccentric decreased 60% by the inclusion of internal work. When comparisons of concentric and eccentric cycling at equal uncorrected work rates were made, neglecting to include internal work introduced errors ranging from 12 to 97%. The calculated estimates of internal work agreed well with the power supplied by the eccentric ergometer to move the legs passively. The investigations show that the inclusion of internal work is important when comparing physiological responses during concentric and eccentric ergometry, especially when pedal frequencies exceed 60 min-1 and when work rates are small.

Adult↗
PubMed1983

Laboratory evaluation of the Boehringer Mannheim "Hitachi 705" automatic analyzer.

We evaluated a new multi-channel chemistry analyzer, the Hitachi 705 Automatic Analyzer, marketed by Boehringer Mannheim Diagnostics, Inc. The instrument is a computer-controlled discrete analyzer, which can be run in a combination profile mode and single-test mode. Sixteen different tests per sample may be performed at the rate of 180 tests per hour. The Hitachi 705 is especially suitable for use in hospitals that do not perform profile testing. Precision and linearity were excellent and the instrument was relatively trouble-free, with little operator attention required during operation. The Hitachi 705 was easily interfaced to our laboratory computer. We compared the performance of the instrument with that of the Du Pont aca; the two instruments compared favorably.

Autoanalysis↗
PubMed1982

Delayed kinetics of respiratory gas exchange in the transition from prior exercise.

The kinetics of oxygen uptake (VO2), carbon dioxide output (VCO2), and expired ventilation (VE) in the transition from rest or from prior exercise were studied in response to step increases in power output (PO). The data were modeled with a single-component exponential function incorporating a time delay (TD). Each subject exercised on four occasions. Test 1 was an incremental test for determination of ventilatory anaerobic threshold (AT). Step increase tests were rest to 80% of PO at AT (test 2), rest-40% AT (3a), 40-80% AT (3b), rest-40% AT (4a), and 40-120% AT (4b). Respiratory gas exchange was monitored by open-circuit techniques. The VO2 kinetics showed the time constant (tau) to be longer in the transitions from prior exercise [tests 3b and 4b were 60.6 +/- 10.8 (SD) and 79.2 +/- 17.4 s] than from rest (tests 2, 3a, and 4a were 37.8 +/- 7.2, 30.0 +/- 7.8, and 39.6 +/- 17.4 s). The mean response time (MRT = tau + TD) was also longer for these tests. Kinetic analysis for VCO2 showed a tendency for tau to be shorter for the tests from prior exercise, but neither tau nor tau + TD were significantly different between tests. In contrast to VCO2, VE kinetics showed a significantly longer tau + TD for test 3b (P less than 0.05) and test 4b (P less than 0.01). This study has shown the VO2 kinetics to be delayed when a given increment in PO occurred from prior exercise, whether the final PO was below or above the AT. Further, the dissociation of VCO2 and VE kinetics does not support a direct link between these two variables as the sole control factor in exercise hyperpnea.

Adult↗
PubMed1982

"Don't let me fall".

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Adaptation, Psychological↗
PubMedDate not supplied

Attitudes of practitioners to lesbian, gay and bisexual clients.

Many health-care workers have a negative attitude towards their lesbian, gay and bisexual clients. Negative attitudes regarding same-sex attractions appear to be deeply ingrained in the majority of nurses' minds as a result of the socialization process. It is vital that nursing embraces issues related to sexual orientation so that quality health care can be provided for all. Doctors also have a responsibility to address the issue of homophobia both within their profession and in relation to their clients. To facilitate this, a framework using a sexual health model should be employed as this would encourage the clinician to contemplate these sensitive issues. This article will explore the attitudes of nurses and will outline the implications for care and education.

Attitude of Health Personnel↗
PubMedDate not supplied

We can work it out.

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Benchmarking↗
PubMedDate not supplied

A survey of final year medical students at University College, Galway.

The results of this survey of final year medical students at a provincial Irish university showed that over three-quarters came from families in which at least one parent was in a professional or semi-professional occupation. The majority of the students had repeated their Leaving Certificate examination. Most students expressed dissatisfaction with the career guidance counselling they received during their second level education. All the students came from secondary schools. While the majority expressed satisfaction with their choice of University course, approximately one-third had considered withdrawing from the course, particularly during the pre-clinical years. The main reasons given were financial difficulties, personal problems and difficulties with the course. Despite the provision of student counsellors and academic staff members to assist such students, the majority did not consult any staff member for help. Most students expected they would have to obtain employment outside of Ireland.

Adult↗