Perioperative Pulmonary Complications in the Elderly: The Forgotten System Pharmacokinetic and Pharmacodynamic Changes in the Elderly: Impact on Anesthetics Update on Perioperative Delirium Mechanical Circulatory Support Devices in the Elderly Liver Transplantation and the Elderly Candidate: Perioperative Considerations Perioperative Fluid Management Data Science and Geriatric Anesthesia Research: Opportunity and Challenges Enhanced Recovery After Surgery and Elderly Patients: Advances Efficiency, Safety, Quality, and Empathy: Balancing Competing Perioperative Challenges in the Elderly Pain Management in the Elderly: A Narrative Review