Pengaruh Keseimbangan Cairan Kumulatif, Tekanan Intraabdominal, Ekskursi Diafragma, dan Rasio Netrofil Limfosit terhadap Kemudahan Penyapihan dari Ventilasi Mekanis Pasien Sakit Kritis = Role of Cumulative Fluid Balance, Intraabdominal Pressure, Diaphragm Excursion and Neutrophil Lymphocyte Ratio on Easiness Weaning from Mechanical Ventilation in Critically Ill Patients