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. 2022 Apr 27;17(4):e0267430. doi: 10.1371/journal.pone.0267430

Table 4. Human or systemic contributory factors and solutions related to choking.

Code Example sub-codes of solutions
Sudden turn in underlying disease (n = 10, 14.7%) ・Not applicable as choking was unavoidable
Inadequate checking (n = 66, 97.1%) ・Do not look away while the patient is eating
・Use a biological monitor
Misperception of risk (n = 65, 95.6%) ・Pay more attention using the observation system or visit the patient’s room more frequently
・Conduct appropriate patient risk assessment before eating or fasting
・Gain the ability to conduct a risk assessment
Poor instructions or procedures (n = 51, 75.0%) ・Conduct appropriate patient risk assessment before eating or fasting
・Ensure appropriate patient/family education procedure
Inadequate coordination (n = 47, 69.1%) ・Keep a comfortable and safe position during eating or sleeping
・Select appropriate texture of diet
・Collect information about eating habits at home from the family
Inadequate environment (n = 29, 42.6%) ・Keep medical care equipment away from the patient
・Move to a room that allows for easier observation, not a private room
Lack of communication among staff (n = 19, 27.9%) ・Share risk among staff using a written document containing the patient’s choking-associated factors
Non-compliance with rules ・Re-check the manual
(n = 10, 14.7%) ・Follow the doctor’s instructions
Staff/time shortage/busyness (n = 8, 11.8%) ・Manage time/staff
Inadequate medication management (n = 7, 10.3%) ・To avoid over-sedation, reschedule medicine time and provide adequate monitoring, or adjust dosage
・Reconsider administration route or treatment
Unfamiliarity with the task ・Continue doing the task under supervision
(n = 7, 10.3%)
Educational mismatch of person and task (n = 7, 10.3%) ・Obtain knowledge about the task

aRCA, Root cause analysis.

bNumber (%).

cError-producing conditions were multiple choices.