Centers for Medicare and Medicaid Services

Newly released documents from federal regulators detail how four patients at a southwest Missouri hospital endured abuse at the hands of caregivers or security guards, leading hospital officials to dismiss 12 employees over the summer.

In one case, staffers knocked a patient’s head against concrete. In another, nurses forced an 18-year-old patient to swallow medication, according to a 105-page report from the Centers for Medicare and Medicaid Services.