American Society of Anesthesiologists Oct 13 2025 People 60 and older who are excessively sleepy during the day may have more problems with memory and thinking after surgery, suggests a study presented at the ANESTHESIOLOGY ® 2025 annual meeting. Daytime sleepiness is a symptom of sleep deficiency that affects up to 20% of adults and may increase the risk of perioperative neurocognitive disorders (PNDs), researchers found. Asking patients, their family or caregivers if they doze frequently