What is res ipsa loquitur and how does it apply to anesthesia negligence?

• A. A doctrine allowing inference of negligence when harm would not occur without negligence and the defendant controlled the situation; requires supporting evidence.
• B. A doctrine that requires proof beyond reasonable doubt.
• C. A standard for informed consent disclosures.
• D. A rule about medical records retention.

Answer: (A)

Res ipsa loquitur—“the thing speaks for itself”—is a civil doctrine that lets a plaintiff infer negligence from the very nature of the injury and the circumstances, without needing direct proof of the exact negligent act. In anesthesia negligence, it applies when the harm is of a type that ordinarily would not occur with proper care, and the anesthesia team had exclusive control over the anesthesia plan, medications, and equipment. When these conditions are met, the plaintiff can establish a negligence basis by circumstantial evidence, and the burden shifts to the defendant to show there was no breach or to offer an alternative, non-negligent explanation. It’s not about proving beyond a reasonable doubt (that’s a criminal standard) and it isn’t about informed consent or record-keeping issues. A key point is that some supporting evidence is still needed to show that the injury typically implies negligence and that the instrumentality was under the defendant’s control; the doctrine allows a reasonable inference of negligence from the circumstances alone.