Ketepatan Parameter Fraksi Penebalan Diafragma, Nilai CRP, Jumlah Balans Kumulatif Dan Nilai Rapid Shallow Breathing Index Dalam Memprediksi Kemudahan Penyapihan Ventilasi Mekanik Pada Pasien Kritis Di ICU = The Accuracy of Diaphragm Thickening Fraction, CRP, Cumulative fluid balance and Rapid Shallow Breathing Index in predicting the ease of weaning mechanical ventilation in critical patients in the ICU