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Biomedical subjects

L Curtis

Publications and source records attributed to L Curtis.

46 records · Page 3Linked to original sources
PubMed1989

Subvocalization rate versus other predictors of the memory span.

Two experiments were performed to determine how accurately the immediate memory span may be predicted from the subject's subvocalization rate, as compared with other subject and stimulus variables. In the first, span and free-recall measures were obtained for 24 subjects, each tested with four types of spoken material (nonsense syllables, random words, fourth-order approximations to English, and normal prose). Silent subvocalization rate, whispered subvocalization rate, speaking rate, and silent reading rate were also measured for each subject. The span (3.9-14 items) showed the highest zero-order correlation with silent subvocalization rate: r = .80. Multiple regression analysis confirmed this as the span's best predictor, partial r = .31. Similar results were found for free-recall scores. In Exp. 2 the digit span was correlated against measures of age, intelligence, subvocalization rate, perceptual speed, and memory search rate, for 40 subjects aged 7 to 17 yr. The best zero-order predictor was age (.62), followed by subvocalization rate (.57) and intelligence (.39). Multiple regression analysis indicated that the span was best predicted by age, partial r = .37, and subvocalization rate, partial r = .29. The span appears more closely related to subjects' internal speech rate than to other cognitive functions.

Adolescent↗
PubMed1987

An analysis of emergency department time: laying the groundwork for efficiency standards.

A time and motion study of emergency department (ED) patient waiting time was conducted at the University Medical Center at the Arizona Health Sciences Center in Tucson as a follow-up to a more general study. The time and motion study examined waiting times associated with all phases of emergency care delivery and various levels of patient acuity. The time it took for other departments to provide services and procedures was seen as a significant contributing factor to ED waiting time. Data from this study have already been used to help the medical center identify and correct ED inefficiencies.

Appointments and Schedules↗
PubMed1986

Analyzing patient time in the emergency department.

Inefficiency in hospital emergency departments (EDs), reflected by unduly long patient visits, threatens patient care quality and hospital public relations. To assess its situation with regard to this problem, the University Medical Center at the Arizona Health Sciences Center (Tucson) analyzed ED visits according to time spent in triage, in the examination/treatment room, and awaiting discharge. Patient acuity, laboratory and radiology procedures, consultations, and arrangements for inpatient admission were taken into account. Findings led to corrective actions to increase efficiency and laid the groundwork for further studies.

Academic Medical Centers↗
PubMed1984

Effect of L-dopa on course of Parkinson's disease.

A review of the progress of 176 patients with Parkinson's disease who were given maximum tolerated doses of L-dopa between November, 1969, and December, 1972, showed that the ratio of observed to expected deaths after 12 years' sustained therapy was 2.59 (2.14 for males and 3.64 for females). This contrasts with the overall 6-year follow-up figure for the same patients of 1.45 (1.29 for males and 1.85 for females). These findings indicate that although L-dopa may improve life expectancy during the first 6 years of therapy the protective effect subsequently declines.

Adult↗
PubMed1976

Penetration of clindamycin phosphate into the abnormal human biliary tract.

Clindamycin phosphate, 600 mg, was given intravenously to 14 patients undergoing biliary tract surgery. Seven had complete obstruction of the common bile duct. Concentrations of total and active (nonesterified) antibiotic were measured in serum, gall bladder and common duct bile, gall bladder wall, and liver. Persons with patent common ducts had high levels of active drug at all hepatobiliary sites; concentrations were two and one half to three times higher in bile and liver than in serum. Persons with obstruction of the common duct had no measurable drug in bile and had reduced levels in gall bladder wall; however, concentrations in the liver were slightly higher than those in the group without obstruction. The results of this study suggest that, even in the presence of common duct obstruction, the concentrations of active clindamycin in the liver may be sufficient to limit the spread of intrahepatic infections due to susceptible organisms.

Anti-Bacterial Agents↗