Introduction:

Currently, therapeutic interventions have become more complex and specialized, but the Therapeutic Intervention Scoring System-28 (TISS-28) has been identified as an adequate tool in the planning of the corresponding nursing activities.

Objective:

To estimate through the Therapeutic Intervention Scoring System-28 (TISS-28) the degree of complexity of the necessary nursing interventions to provide care to patients in critical status.

Methods:

This is a descriptive study on 270 adult, pediatric, and neonatal patients in critical status. The TISS-28, and nursing and patient sociodemographic instruments were used. A descriptive statistical analysis using the sociodemographic and work-related variables was carried out. Bi-variate analysis and logistic regression were calculated in order to analyze the nursing performance by levels of complexity.

Results:

The interventions provided by the nursing staff in the internal medicine service in Grade II is 9.8 times more than in the rest of the patients, grade III increases by 68 times when the patient has an excess hospital stay.

Discussion:

Patients in the intensive care or surgical services require more care.

Conclusion:

The TISS-28 offers an estimate on the evolution and attention time required by patients in critical status as well as the corresponding ideal nurse-patient ratios.