Biomedical subjects

T M Davis

Publications and source records attributed to T M Davis.

165 records · Page 10Linked to original sources

PubMedDate not supplied

A regular meal and insulin infusion regimen: its use in the treatment of acute-onset ketotic diabetes and in stabilization of poorly controlled established diabetic subjects.

A simple regimen, consisting of a constant intravenous insulin infusion at either a basal, nocturnal rate or at a daytime rate matched by seven small, isocaloric meals taken every 2 h, has been applied to two clinical situations requiring optimal blood glucose control. In eight poorly controlled established diabetic subjects, quantitative estimates of daily insulin requirements were possible, with consequent improved control upon reinstitution of twice-daily subcutaneous insulin. In five acute-onset, ketotic diabetic subjects first treated by intravenous saline and low-dose intramuscular insulin, the regimen was used to achieve and maintain basal and postprandial normoglycemia. Ketonuria was abolished quickly in these patients, and falling insulin requirements and large doses of insulin were handled easily. In both clinical situations, subsequent subcutaneous insulin doses required little adjustment. The regimen is cheap, convenient to use, and widely applicable.

Blood Glucose↗

PubMedDate not supplied

Preparing adult patients for cardiac catheterization: informational treatment and coping style interactions.

OBJECTIVE: To examine the interacting effects of coping style and type of preparatory informational treatment on cardiac catheterization patient anxiety. DESIGN: Pretest-posttest randomized control group design. SETTING: Canadian, university-affiliated, large urban hospital. SUBJECTS: 145 adult patients (107 men and 38 women) scheduled for their first cardiac catheterization. Age range was from 34 to 78 years. Mean educational level was 10.72 years. OUTCOME MEASURES: Subject's coping style (monitoring [information seeking] or blunting [information avoiding]) was assessed by means of Miller's Behavioral Style Scale. Subject's anxiety was assessed by means of Speilberger's A-Trait and A-State Inventory. INTERVENTION: After coping style assessment, monitors and blunters were randomly assigned to receive one of three preparatory informational treatments: (1) videotaped procedural modeling information; (2) videotaped procedural-sensory modeling information; and (3) procedural-sensory information booklet. RESULTS: Subjects' anxiety was assessed before and after intervention (Time 1 and Time 2) and before and after catheterization (Time 3 and Time 4). Analysis of variance techniques applied to the anxiety data largely confirmed the hypothesized interaction between subjects' coping style and type of preparatory informational treatment. Monitors who received the procedural-sensory modeling video treatment and blunters who received the procedural modeling video treatment reported significant reductions in A-state anxiety at Time 2 and maintained that decrease at Time 3. In contrast, monitors and blunters who received the other preparatory informational treatments reported a significant increase in A-state anxiety or a nonsignificant change in A-state anxiety at Time 2 and Time 3. At Time 4 monitors and blunters in each of the treatment groups reported a significant decrease in A-state anxiety. CONCLUSIONS: Two unexpected findings emerged from the study: (1) female monitors and blunters reported significantly higher A-state anxiety levels than their male counter-parts at preintervention, and (2) significant differences were observed among the preintervention A-state anxiety means of male monitors in the three preparatory treatment groups. These findings limit the conclusions that can be drawn from the study but provide direction for future research in the preparatory area.

Adaptation, Psychological↗

PubMedDate not supplied

Undergoing cardiac catheterization: the effects of informational preparation and coping style on patient anxiety during the procedure.

OBJECTIVE: To examine the effects of coping styles and preparatory informational treatments on patient anxiety during cardiac catheterization. DESIGN: Prospective, experimental, random assignment, repeated measures design. SETTING: Canadian, university-affiliated, large urban hospital. SUBJECTS: 145 adult patients (107 men and 38 women) scheduled for their first cardiac catheterization. Age range was from 34 to 78 years. Mean educational level was 10.72 years. OUTCOME MEASURES: Subject's coping style, "monitoring" (information seeking) or "blunting" (information avoiding) was assessed by means of Miller's Behavioral Style Scale. Subjects' anxiety was assessed using three measures: (1) a self-report measure, the Subjective Units of Distress (SUDS) Scale; (2) a behavioral measure, the Cardiac Catheterization Adjustment (CA) Scale; and (3) physiologic measures, heart rate and systolic and diastolic blood pressure. INTERVENTION: After coping style assessment, monitors and blunters were randomly assigned to receive one of three preparatory informational treatments: (1) videotaped procedural modeling information, (2) videotaped procedural-sensory modeling information, and (3) procedural-sensory information booklet. RESULTS: Analysis of variance techniques applied to the anxiety data revealed the following: (1) significant changes in self-reported patient anxiety occurred as a function of occasion rather than preparatory informational treatment or coping style, (2) subjects receiving the three preparatory informational treatments demonstrated significantly different behavioral adjustments during cardiac catheterization, and (3) most subjects demonstrated heart rate and blood pressure readings in the normal range; however, significant changes in cardiovascular reactivity were found to be associated with contrast dye insertion. CONCLUSIONS: Subjects who received the videotaped modeling treatments demonstrated greater behavioral adjustment than patients who received the information booklet. Questions remain as to whether the procedural modeling treatment is more efficacious than the procedural-sensory modeling treatment. Increases in subjects' SUDS levels were found to be associated with changes in ideational content. Changes in blood pressure and heart rate were attributed to physiologic and psychologic factors. Coping style did not appear to significantly influence any of the measures of patient anxiety.

Adaptation, Psychological↗