PATIENT-CONTROLLED ACCESS TO VISITATION IN THE CORONARY CARE UNIT.
Contributors: University of Nebraska Medical Center.
Published: 1993
Number of pages: 265
Subjects: Health Sciences, Nursing.; Psychology, Physiological.
Description: The stress of Coronary Care Unit (CCU) admission and need for rest may contribute to a sense of helplessness exacerbated by the unpredictability of visitor entry. The purpose of this two-group repeated measures study was to determine if patient control of visit timing would minimize the undesired psychophysiologic effects of CCU visitation. A conceptual framework adapted from Braden (1988) integrated a cognitive-relational theory of stress (Lazarus & Folkman, 1984) and associated concepts of stressors, individual appraisal, control, physiologic responses, psychologic (coping) responses, and adaptation/maladaptation. Subjects were 60 CCU patients with actual or potential diagnoses of myocardial infarction (MI) admitted to one of eight rooms with a Patient-Controlled Access to Visitation (PCA-V) device. The randomly-selected PCA-V group was given the device which activated an indicator light just outside the patient's room. The familiar format communicated the subject's wishes to potential visitors: red to indicate the desire to restrict visits and green to allow visits at that time. Physiologic dependent variables were heart rate (HR) and rhythm, premature ventricular contractions (PVC), systolic, diastolic, and mean arterial blood pressure (SBP, DBP, MAP), salivary cortisol (SC), and finger temperature (FT); psychologic variables of visit stress/comfort, visit emotions, perceived control of visits, perceived rest between visits measured pre-/post-visit appraisal. Trait anxiety, an antecedent to appraisal, was measured once.

ANOVA for repeated measures found main time effects for HR, DBP, perceived control of visitation, and perceived rest between visits measured during 20-minute non-visit and visit times in the non-PCA-V group. The PCA-V group reported more perceived control of visitation and more perceived rest than the non-PCA-V group, but the non-PCA-V group reported less stress and more comfort at visit end than did the PCA-V group. Heart rate and DBP were decreased for the PCA-V group, and SBP, DBP, and MAP increased within 5-10 minutes of visitor entry but decreased to baseline or below by visit end. ANCOVA revealed that trait anxiety was not highly correlated with any of the variables, nor did it help predict variable changes in response to visitation.
Notes: Source: Dissertation Abstracts International, Volume: 54-12, Section: B, page: 6135.

Thesis (PH.D.)--UNIVERSITY OF NEBRASKA MEDICAL CENTER, 1993.

School code: 0367.