General vs. Regional Anesthesia: How the Choice Is Made

General anesthesia is a drug-induced state of unconsciousness from which the patient is not arousable even by painful stimulation, and usually includes loss of protective reflexes and control of the airway.¹ It is commonly used for major operations — including open-heart surgery, intracranial procedures and major abdominal operations — and for other procedures when your airway is managed and your breathing and circulation are supported by the anesthesia team.

Regional anesthesia numbs a specific area of the body, such as an arm, leg, or the lower half of the body, by delivering local anesthetic near targeted nerves. A common form is an epidural or spinal anesthetic. You may remain awake or receive sedation as part of the anesthetic plan.²

The choice depends on several factors: the type and length of surgery, your medical history, your preferences, and the expected recovery path. In some cases, general and regional techniques are combined to improve comfort and reduce the need for opioids; the evidence supporting this varies by procedure and is not uniform across all surgeries.³

What each approach feels like

Under general anesthesia you remember nothing from the moment you fall asleep until you wake in recovery. Under regional anesthesia the numbed area feels heavy and difficult to move; you may sense pressure or movement during the operation, but you should not feel sharp pain — tell your anesthesiologist at once if you do. Many patients choose light sedation alongside a regional anesthetic so that they doze through the procedure.²

Questions worth asking

Which approach is planned for me, and why? Is a regional technique an option for this operation? Will I be awake, drowsy or fully asleep? How will pain be controlled afterwards? The answers depend on the operation and on your medical history, and the plan can be discussed and adjusted before you consent.

Before the procedure, you should be told which approach is recommended and why, along with any alternative techniques, so that you understand the plan and can discuss it with your anesthesiologist.

Sources

1. American Society of Anesthesiologists. Statement on Continuum of Depth of Sedation: Definition of General Anesthesia and Levels of Sedation/Analgesia. Original approval October 13, 1999; last amended October 23, 2024.
2. American Society of Anesthesiologists. Outpatient Surgery and Anesthesia. Patient brochure. Copyright 2015.
3. Joshi GP, Mariano ER, Elkassabany NM, et al. 2026 American Society of Anesthesiologists practice guideline on perioperative pain management using local and regional analgesia for cardiothoracic surgeries, mastectomy, and abdominal surgeries. Anesthesiology. 2026;144(1):19–43.