Search PubMed⌕ Search

Biomedical subjects

B Ellis

Publications and source records attributed to B Ellis.

At least 91 records · Page 5Linked to original sources
PubMed1980

Nurses told of need for more influence.

American Society of Nursing Service Administrators seeks to develop leadership role in resolving current nursing and health care issues.

Administrative Personnel↗
PubMed1980

Winds of change sweep nursing profession.

New specialties are developing, new roles are being tested, and scientific advancements are making new demands on nurses' education and skills.

Administrative Personnel↗
PubMed1980

The elastic modulus of soft denture liners.

Under certain circumstances, e.g., when treating "denture sore mouth" or after the provision of immediate dentures, dentures may be lined with soft rubberlike materials which have Young's moduli within the range congruent to 10(5) N m-2. Measurement of the compression modulus Ec of such soft liners is described and Gent and Lindley's method of calculating Young's modulus E was evaluated. It was established that the Young's modulus may be calculated using: Ec = E(1 + 2kS2), where k = 1 for soft rubbers, and for disks S is a shape factor and = radius/2 X thickness. It is also shown that Young's modulus is a linear function of log(rate of strain) for both tension and compression measurements. When gellation has occurred subsequent to mixing there is an increase in Young's modulus due to loss of ethanol. When immersed in brine the elastic modulus remains approximately constant from a day to a week or longer.

Denture Liners↗
PubMed1980

Angiotensin II and norepinephrine after indomethacin in isolated perfused canine kidneys. Tachyphylaxis vs. modulator effect of prostaglandins.

High levels of radioimmunoassayable PGE2 were measured in the perfusate of isolated kidneys. Indomethacin inhibited PGE2 release in this system. Small reductions in the pressor effects of norepinephrine (NE) were associated with increasing perfusate levels of PGE2; a large increase in the pressor effect of NE followed additions of indomethacin and reductions in perfusate PGE2 levels. A marked reduction in pressor responsiveness to angiotensin II (AII) was measured in the isolated kidney which could not be prevented or reversed by indomethacin. It is believed that tachyphylaxis was responsible for the marked reduction in pressor responsiveness to AII and that this is independent of alterations in prostaglandin metabolism. However prostaglandins appeared to modulate the pressor effects of AII as they did NE in the isolated perfused kidney.

Angiotensin II↗
PubMed1980

New medical staff leadership roles emerging.

The forces that have come to bear on the health care industry in the '80s have had a marked effect on the dynamics and dimensions of hospital administrative-board-medical staff relationships. Although sometimes the source of conflict, these forces have been an impetus for medical staff strengthening and leadership.

Governing Board↗
PubMed1980

AMA orients itself to current realities.

At its 1980 annual meeting, the AMA revised its "Principles of Medical Ethics" to achieve a more contemporary stance between professional principles and social reality; it gave its approval, although qualified, to HMOs; it elected to negotiate with the appropriate organizations to establish a single nationwide accrediting body for continuing medical education; and it adopted a draft document on the categorization of hospital emergency capabilities.

American Medical Association↗
PubMed1979

Energy situation is precarious.

Given the uncertain future that lies ahead for meeting the nation's energy needs, many hospitals are assuming a posture of vigilance and preparedness. If they are not, they should be, experts say.

Conservation of Energy Resources↗
PubMed1979

AHA looks at nurse credentialing.

AHA's National Conference on Categories or Nursing Practice explores the weaknesses and strengths of the credentialing system and the ramifications of proposed changes.

Accreditation↗
PubMed1979

Speak up for children!

During 1979, the International Year of the Child, the United Nations General Assembly has asked its member nations to examine and improve their services for children.

Accident Prevention↗
PubMed1979

Planning system has corporate overview.

The Clarkson Management System (CMS) provides for appropriate participation of managers in all major plans and a common understanding of the impact of all plans on the total organization.

Decision Making↗
PubMed1979

Technology evaluation roundtable discusses role of private sector.

Working from the premise that health care technology should be studied from a multiperspective approach rather than a unidirectional approach, a group of health care opinion leaders gathered to discuss how private or public-private sector efforts could lead to this broad-based approach and to more effective and efficient utilization of health technology.

Capital Expenditures↗
PubMed1979

Production of maximally acid urine by the isolated dog kidney.

The isolated kidney has not been reported to acidify urine maximally. To study this defect, kidneys from dogs fed NH4Cl were perfused with autologous blood. Perfusate pH was 7.20 +/- 0.03 [HCO3] was 14 +/- 1 mEq/L, and urine pH was abnormally high, 6.60 +/- 0.08. When corrected for difference in GFR, UNH4+V was similar to that seen in vivo, but UTAV and UNet H+V were low. FEHCO3- was 2.3% +/- 0.8% and HCO3- excretion persisted to a small degree at perfusate [HCO3-] of 8 to 9 mEq/L. In response to HCO3- infusions, large increases in excretion were not seen until perfusate values were over 24 to 26 mEq/L. HCO3- Tmax was 2.94 +/- 0.07 mEq/dl of glomerular filtrate. The isolated kidney failed to raise U-B PCO2 with HCO3- infusion secondary to low urine [HCO3-] and [Pi]. During perfusion in another group of kidneys from dogs fed NH4Cl and given DOC, perfusate pH and [HCO3-] were similar to those in the first group. Urine pH was also inappropriately high, 7.12 +/- 0.09, and there was no UNet H+V. In response to Na2SO4 infusion, urinary pH fell to 5.00 +/- 0.27. Log10UUAV was correlated to urine pH during the control perfusions in both groups and after Na2SO4 in the NH4Cl + DOC group. Thus production of a low urine pH in the isolated kidney may be mediated by changes in transtubular potential difference resulting from increased distal nephron delivery of Na+ and nonabsorbable anion. The defect in acidification is similar to that observed in incomplete forms of clinical type 1 (distal) renal tubular acidosis.

Ammonium Chloride↗