What do you do if a patient lying on his back slid down in bed and needs help in moving up again?

If a patient lying on their back has slid down in bed, first ensure their safety by checking for any discomfort or distress. Explain the situation to the patient and ask for their assistance if possible. Use proper body mechanics and techniques, such as the log roll method or a draw sheet, to carefully reposition the patient, ensuring their comfort and dignity throughout the process. Always seek help from a colleague if the patient is too heavy or if you feel you cannot safely assist them alone.