Anesthesia Error Malpractice Claims

Anesthesia Error Malpractice: Overview

Anesthesia is among the safest areas of modern medicine. Patient safety initiatives — including standardized monitoring, pulse oximetry, capnography, and the work of the Anesthesia Patient Safety Foundation — have driven the rate of anesthesia-related mortality dramatically lower over the past three decades.

When anesthesia errors do occur, however, the consequences can be catastrophic. The brain is intolerant of even brief periods of hypoxia. An unrecognized airway problem or undetected breathing circuit disconnect can cause permanent anoxic brain injury within minutes.

Pre-Operative Assessment Failures

Every anesthesia provider has a duty to perform a pre-operative assessment that identifies factors that may complicate anesthesia delivery, including:

• Difficult airway predictors (Mallampati score, mouth opening, neck mobility, prior intubation history)
• Cardiopulmonary disease and functional capacity
• Allergies and prior anesthesia reactions (including malignant hyperthermia history)
• Current medications, including anticoagulants
• Aspiration risk factors and NPO status
• Pseudocholinesterase deficiency or other pharmacogenetic risks

Failure to identify a known difficult airway, a documented allergy, or a relevant pharmacogenetic risk and to plan accordingly is a recurring source of anesthesia malpractice claims.

Dosing Errors: Overdose and Underdose

Anesthesia dosing must be individualized based on the patient's age, weight, organ function, comorbidities, and the procedure performed. Both overdose and underdose can cause harm:

• Overdose — particularly of opioids, propofol, and inhaled agents — can cause respiratory depression, cardiovascular collapse, and hypoxic brain injury
• Underdose — inadequate anesthetic depth — can result in patient awareness and recall during surgery (anesthesia awareness), patient movement, hemodynamic stress, and psychological injury

Airway Management Failures

Airway management is the single highest-risk aspect of anesthesia. The American Society of Anesthesiologists (ASA) Difficult Airway Algorithm sets out the standard of care for managing predicted and unpredicted difficult airways. Recurring categories of airway-related claims include:

• Failure to recognize a difficult airway pre-operatively
• Esophageal intubation — placing the endotracheal tube in the esophagus rather than the trachea, with failure to recognize the misplacement
• Failure to detect an unrecognized intubation by capnography (ETCO2)
• Cannot intubate, cannot oxygenate (CICO) emergencies — failure to perform timely surgical airway (cricothyroidotomy)
• Dental injury during intubation
• Aspiration of gastric contents
• Post-extubation airway obstruction

The continuous monitoring of end-tidal CO2 — capnography — is a standard of care for any patient with an artificial airway. Failure to monitor capnography or to act on capnography findings is significant evidence of breach.

Intraoperative Monitoring Failures

ASA Standards for Basic Anesthetic Monitoring require continuous evaluation of oxygenation, ventilation, circulation, and temperature throughout the conduct of any anesthetic. The required monitors include:

• Pulse oximetry (SpO2)
• Capnography (ETCO2) for any artificial airway
• Continuous ECG
• Blood pressure measurement at least every 5 minutes
• Temperature monitoring
• An anesthesia provider continuously present in the operating room

Failure to maintain continuous monitoring — including breaks in monitoring during patient transfers and during anesthetic technique changes — is a core breach of the anesthesia standard of care.

Anesthesia Awareness

Anesthesia awareness — the experience of being conscious during general anesthesia and able to recall events afterwards — is estimated to occur in approximately one to two patients per thousand under general anesthesia. Higher rates occur in cardiac surgery, trauma surgery, and obstetric general anesthesia.

Awareness with explicit recall — particularly accompanied by paralysis from neuromuscular blockade — can cause severe psychological injury including post-traumatic stress disorder. Avoidable awareness — caused by inadequate dosing of the anesthetic agent or failure to monitor anesthetic depth in high-risk cases — supports a malpractice claim.

Regional Anesthesia and Neuraxial Injuries

Regional anesthesia — spinal, epidural, peripheral nerve blocks — carries its own risk profile. Recurring categories of regional anesthesia claims include:

• Spinal or epidural hematoma in patients on anticoagulation
• Permanent nerve injury from peripheral nerve block
• High spinal block with cardiovascular collapse
• Local anesthetic systemic toxicity (LAST)
• Epidural abscess
• Wet tap and post-dural puncture headache

Compliance with American Society of Regional Anesthesia (ASRA) guidelines on neuraxial anesthesia in patients on anticoagulants is a particular focus in spinal hematoma cases.

Post-Anesthesia Care Unit (PACU) Failures

Recovery from anesthesia is a high-risk period. Patients in the post-anesthesia care unit (PACU) require continuous monitoring for airway compromise, residual neuromuscular blockade, opioid-induced respiratory depression, and hemodynamic instability. Premature discharge from PACU before the patient meets discharge criteria, inadequate monitoring during recovery, and failure to recognize deterioration are all recurring sources of malpractice claims.

Anesthesiologists, CRNAs, and Care Team Liability

Anesthesia in the United States is delivered by physician anesthesiologists, certified registered nurse anesthetists (CRNAs), anesthesiologist assistants, and — in many cases — by an anesthesia care team in which a physician anesthesiologist medically directs one or more CRNAs simultaneously.

Liability allocation in anesthesia care team cases is governed by state law and by the specific role each provider played at the time of the alleged error. Where a physician anesthesiologist is medically directing the case, that physician may be liable for breaches by the CRNA depending on whether the directing physician was present for critical portions of the case as required by Medicare conditions of participation.

Damages in Anesthesia Cases

Anesthesia injury cases produce two distinct damages profiles. Most anesthesia errors produce limited harm — dental injury, transient nerve injury, awareness-related psychological injury — with damages in the moderate range. Catastrophic anesthesia injuries — anoxic brain injury from airway loss, permanent paralysis from spinal hematoma — produce damages in the multi-million dollar range to fund lifetime care. Full damages guide →