Combined Predictive Value of RSBI and CALLY Index in Predicting Weaning Success in ICU Patients
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Conditions studied: Critical Illness, Respiratory Insufficiency, Ventilator Weaning, Weaning Failure of Mechanical Ventilation
In brief
The primary objective of this prospective observational study is to evaluate the effectiveness of combining the Rapid Shallow Breathing Index (RSBI) and CRP-Albumin-Lymphocyte (CALLY) index to predict weaning success in adult patients within the intensive care unit. While weaning from mechanical ventilation is a critical clinical step, existing physiological metrics like RSBI do not fully capture a patient's inflammatory or nutritional status. This research introduces the CALLY index calculated as the ratio of the patient's immuno-nutritional reserve (Albumin and Lymphocytes) to systemic inflammation (CRP) as a complementary metabolic marker. By tracking approximately 105 participants at Basaksehir Cam and Sakura City Hospital, the study monitors weaning success over both a 48 hour and a 7 day period to identify both immediate and late phase extubation failures. The ultimate goal is to provide a more holistic prediction model that potentially reduces re-intubation rates and improves clinical outcomes by accurately identifying the optimal time for ventilator removal.
Key facts
- Study ID
- NCT07571317
- Run by
- Istanbul University - Cerrahpasa
- People needed
- 105
- Starts
- 2026-05-04
- Expected to finish
- 2026-07-31
- Last updated by the study team
- 2026-05-11
Who can join
Age: 18 and older. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Patients aged 18 years and older
- Patients who have received invasive mechanical ventilation for at least 24 hours in the general intensive care unit.
- Patients who meet standard clinical weaning criteria (e.g., hemodynamic stability with minimal or no vasopressor support, adequate cough reflex, absence of excessive airway secretions).
- Patients deemed ready for a Spontaneous Breathing Trial by the attending physician.
You may not qualify if…
- Patients under the age of 18.
- Patients with a known or detected pregnancy.
- Patients with a diagnosis of malignancy.
- Patients with neuromuscular diseases that could impair respiratory effort or muscle strength assessments (e.g., Myasthenia Gravis, Amyotrophic Lateral Sclerosis, Guillain-Barré syndrome).
Where it is running
- Basaksehir Cam and Sakura City Hospital — Istanbul, Istanbul, Turkey (Türkiye) (enrolling)
Full record on ClinicalTrials.gov
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