Functional independence and spirometry in adult post-intensive care unit patients

Area of Science:

• Pulmonary Medicine
• Intensive Care Medicine
• Rehabilitation Medicine

Background:

• Patients surviving intensive care unit (ICU) stays often experience long-term sequelae.
• Pulmonary impairment is a common post-ICU complication, affecting recovery and quality of life.
• Functional independence is crucial for post-ICU patient outcomes.

Purpose of the Study:

• To investigate the relationship between functional independence and pulmonary function.
• To assess the degree of pulmonary impairment in adult patients three months after ICU discharge.
• To understand how pulmonary status influences functional recovery post-ICU.

Main Methods:

• Retrospective cohort study in a single-center ICU and post-ICU outpatient clinic.
• Inclusion of 197 adult patients who underwent spirometry and Functional Independence Measure (FIM) Questionnaire 3 months post-ICU discharge.
• Analysis of patient data including Acute Physiology and Chronic Health Evaluation II (APACHE II) and Sequential Organ Failure Assessment (SOFA) scores, mechanical ventilation duration, and hospital length of stay.

Main Results:

• The majority of patients (181/197) achieved independent functional status at 3 months post-ICU.
• Pulmonary impairment, predominantly obstructive, was prevalent among the study population.
• A significant inverse correlation was found between functional independence and pulmonary function, particularly peak expiratory flow (p=0.030).

Conclusions:

• Most patients achieve good functional status 3 months after ICU discharge.
• Pulmonary impairment is a common finding in this population.
• The degree of pulmonary impairment is directly related to the level of functional dependence observed post-ICU.