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Biomedical subjects

M L Fox

Publications and source records attributed to M L Fox.

30 records · Page 2Linked to original sources
PubMed1992

Decision-making autonomy in nursing.

Current nursing literature has suggested that nurses may have low needs or preferences for decision-making autonomy. In this study, the authors found that nurses differed in their preferences for decision-making autonomy in three types of work-related decisions. Employed nurses with a greater preference for autonomy were more satisfied with their jobs, and those with little or no such preference were less satisfied, as they gained decision-making influence over patient care and unit management. The authors discuss implications for designing and implementing decision-making programs.

Adult↗
PubMed1992

Transcatheter closure of atrial septal defects: hemodynamic complications and anesthetic management.

Transcatheter closure of atrial septal defects using a double-umbrella (clamshell) device can now be performed during an overnight hospital stay with little morbidity and no mortality. The initial 2-yr experience with anesthetic care for the procedure was collected and subsequently analyzed. Primary anesthetic care was given in 118 cases and urgent anesthetic intervention was required in another four cases. Anesthesia with spontaneous ventilation in patients with unprotected airways using intravenous ketamine and midazolam (average cumulative doses 1.4 and 0.17 mg.kg-1.h-1, respectively) was used in 93 cases (77%); mean maximum PaCO2 value was 41 +/- 6 mm Hg. In 29 patients (23%) tracheal intubation and muscle paralysis were used to facilitate control of airway and ventilation. Anesthetic-related complications occurred in three patients: ventilatory compromise developed in two patients in the spontaneous ventilation group and one patient experienced awareness during endotracheal anesthesia with paralysis. Procedural complications that altered anesthetic management were more frequent, including embolization of the clamshell device requiring surgical retrieval in two of six embolizations, intracardiac air embolization (four cases), tricuspid regurgitation (one case), device malplacement requiring late operation (one case), and transient brachial plexus injury (three cases). Anesthesia for transcatheter atrial septal defect closure allows precise device placement, prompt control of hemodynamic complications, and transesophageal echocardiographic monitoring of device placement. Although general anesthesia with spontaneous ventilation using ketamine and midazolam was usually safe and effective, tracheal intubation for control of airway and ventilation was sometimes necessary for safety and for optimal operating conditions. Familiarity with transcatheter closure techniques and close communication with the catheterization team is essential to minimize and treat associated complications.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1986

Conjunctival flaps in the treatment of refractory pseudomonas corneal abscess.

Pseudomonas corneal abscess can result in a rapid downhill clinical course despite institution of appropriate medical measures. In this situation the clinician is faced with surgical intervention. A series of patients treated and stabilized through conjunctival flap therapy are presented. The role of conjunctival flap therapy in halting the progression of this entity is described.

Abscess↗
PubMed1975

Investigation of factors of probable significance in the pathogenesis of pneumonic pasteurellosis in cattle.

Six groups of ten beef calves six to eight months of age were shipped from western Canada and observed untreated for one week after arrival. The following parameters were measured daily: body temperature, plasma fibrinogen, nasal bacterial mean colony counts of Pasteurella hemolytica and Pasteurella multocida, total and differential leukoyte counts, packed cell volumes and the following, twice during the week: serum and nasal antibody titres to P. hemolytica and parainfluenza-3 virus. The lungs from 44 of the calves were obtained at post mortem and given a numerical score based on the degree of pneumonia present. Animals were designated SICK and WELL according to body temperature and plasma fibrinogen. The SICK animals had higher nasal mean colony counts of P. hemolytica than the WELL animals. The SICK animals had lower levels of serum antibody to P. hemolytica than the WELL on day 1 but had a greater rise in titre over the week than did the WELL animals. Both groups were similar with regard to serum antibody to parainfluenza-3 virus and there was little change in these titres. The SICK animals had a much greater degree of pneumonia than the WELL. The values of some of the parameters were combined with the data of previously studied animals in order to provide a comparison of SICK and WELL with larger numbers of animals.

Animals↗
PubMed1971

Pasteurella haemolytica of cattle: serotype, production of beta-galactosidase and antibacterial sensitivity.

Two hundred and three isolates of Pasteurella haemolytica from cattle were studied. They originated from the nasal cavity of cattle in housed herds; the nasal cavity and pneumonic lungs of experimental feedlot calves and from pneumonic bovine lungs submitted for bacteriological diagnosis.To determine whether a single characteristic or combination of characteristics might be a feature of isolates collected from animals with pneumonic pasteurellosis (Shipping Fever), the following tests were made. Cultures were serotyped by indirect haemagglutination; the ability to produce beta-galactosidase was examined in the ortho-nitrophenyl-beta-D-galactopyranoside (ONPG) test and antibacterial sensitivity tests were done. None of these factors could be directly related to the role of P. haemolytica in "Shipping Fever".

Animals↗
PubMed1970

Differences between cull and normal turkeys in natural infection with Mycoplasma meleagridis at one day of age.

The thoracic air sacs of poults at one day of age were examined to compare those of normal, saleable poults with those of sibs culled(1) at hatching at three stages in the laying season. Lesions of airsacculitis were recorded and the air sacs were cultured for mycoplasma. Impression smears of the thoracic air sacs were stained with rabbit anti-Mycoplasma meleagridis serum conjugated with fluorescein isothiocyanate and examined to determine the location and infection rate of the organism. M. meleagridis were observed closely associated with or within epithelial cells of the air sac; within mononuclear cells and as extracellular "microcolonies". The lesion and infection rate of cull poults in most hatches exceeded that of normal poults and infection with M. meleagridis was more often expressed (as a lesion) in cull than in normal poults.

Air Sacs↗
PubMedDate not supplied

Reducing stress by increasing control.

The concept of having control over your work has long been viewed as an essential part of human motivation and is linked with the idea that individuals seek to master their environments and to be effective in producing change. Over the past decade, the notion of control also has become an important factor in helping to alleviate job-related stress. Considerable evidence exists to suggest that workers actually might have improved physical and mental health and be more productive under stressful conditions if they possess the requisite level of control.

Health Personnel↗