The ratios can vary widely depending on the type of care unit: - Intensive Care Units (ICUs): Typically 1:1 or 1:2 due to the critical nature of the patients. - Medical-Surgical Units: Generally range from 1:4 to 1:6. - Pediatric Units: Usually 1:3 to 1:4, considering the specific needs of children. - Emergency Departments: Ratios can fluctuate but often aim for 1:3 to 1:4.