Perceptions of distinctions between patient and healthcare zones among intensive care unit nurses at a Korean tertiary hospital: A cross-sectional study.

Background: Intensive care unit (ICU) patients face higher infection risks from invasive procedures, highlighting the critical role of ICU nurses in infection prevention. Clear differentiation between the patient and healthcare zones is essential for effective hand hygiene and disinfection, yet research on this topic is limited.

Aim: To assess ICU nurses' perception of the concept of patient and healthcare zones and evaluate their similarity and accuracy in identifying the zones.

Methods: A descriptive survey was conducted at a 2,732-bed tertiary hospital in Korea from 28 July to 27 August 2022. Participants were recruited from various ICUs through flyers. 225 questionnaires-with illustrations 27 item locations for three ICU scenarios-were made available at nursing stations for voluntary completion. Participants were asked to classify items into the patient zone or the healthcare zone. Similarity scores reflected participant agreement, while accuracy scores measured the proportion of correct answers. Participants' free-text opinions regarding zone classification were analysed thematically.

Findings: 104 nurses participated voluntarily. Average similarity and accuracy were 84.7% and 82.7%, respectively. The top 8 items, with over 97% similarity and accuracy, were all frequently in contact with ICU patients (e.g., pulse oximeter, Levin tube, central line, urine bag, and patient bed). The bottom 7 items, with less than 80%, included the glucometer, flashlight, trolley, and sink. Participants with higher education levels had significantly higher similarity (p = .044) and accuracy (p = .033), whereas those already familiar with the patient-zone concept had significantly higher accuracy (p = .009). From the free-text analysis, participants considered factors beyond proximity to the patient, such as patient contact, room type, and distance.

Conclusions: To address zone classification challenges, clear criteria for patient and healthcare zones, space redesign, and educational programs are recommended. Further research is necessary to improve greater clarity and consensus regarding patient and healthcare zones to enhance infection control practices.