Surgical Malpractice in New Hampshire: Retained Instruments, Wrong-Site Surgery, and Anesthesia Errors

Current as of: October 28, 2026 Medical Malpractice New Hampshire
New Hampshire gives patients 3 years to sue for surgical errors like retained sponges, wrong-site operations, or anesthesia overdoses with uncapped damages. Hospitals must report surgical never events under N.H. Rev. Stat. Ann. § 151:38, while N.H. Rev. Stat. Ann. § 507-E:2 governs proof.

Before being wheeled into an operating room or ambulatory surgical center in Manchester, Nashua, Portsmouth, Concord, or Lebanon, every patient is asked to sign an informed consent document listing potential surgical complications. Hospitals and malpractice insurers frequently point to that signed consent form after a botched operation to argue that the patient assumed the risk of a poor outcome.

Under New Hampshire law, however, signing an informed consent form only acknowledges unavoidable clinical risks that can occur despite competent medical care-it never grants a surgeon, anesthesiologist, or operating room team immunity for carelessness. When a surgical error involves a preventable catastrophe known in healthcare as a never event, injured patients have powerful statutory rights to hold both the surgeon and the facility accountable.

Known Surgical Risks vs. Actionable Negligence and Never Events in New Hampshire

In New Hampshire, surgical malpractice claims are governed by N.H. Rev. Stat. Ann. § 507-E:2, which requires the injured patient to prove through expert medical testimony that the surgeon, anesthesiologist, or surgical staff failed to act in accordance with the standard of reasonable professional practice in their specialty, and that this failure proximately caused injuries that would not otherwise have occurred.

In Goudreault v. Kleeman, 158 N.H. 236 (NH Supreme Court 2009), the New Hampshire Supreme Court examined expert witness standards and fault allocation in complex surgical negligence litigation under N.H. Rev. Stat. Ann. § 507-E:2. To distinguish a known risk from negligence, courts look at whether the complication was preventable through standard surgical precautions.

Furthermore, New Hampshire is one of the states with a strict mandatory hospital adverse event reporting statute. Under N.H. Rev. Stat. Ann. § 151:38, every hospital and ambulatory surgical center in the state must report serious preventable surgical errors-widely known as never events-to the New Hampshire Department of Health and Human Services, Concord. While state statute mandates adverse event reporting, billing prohibitions for corrective care following surgical never events are enforced under federal Centers for Medicare & Medicaid Services (CMS) Hospital-Acquired Condition (HAC) non-payment rules and private insurance contract terms.

Leaving Sponges or Tools Inside the Patient

Unintended retention of a foreign object inside a patient's body cavity after surgery-such as a surgical sponge (gossypiboma), laparotomy towel, clamp, retractor, needle, or broken scalpel blade-is a classic surgical never event reportable under N.H. Rev. Stat. Ann. § 151:38.

Operating room standards require circulating nurses, scrub techs, and surgeons to perform strict manual and electronic barcode/radiofrequency sponge and instrument counts before the incision is made, before cavity closure begins, and at final skin closure. When a count is discrepant, the surgeon must pause closure and order an intraoperative X-ray to locate the missing radiopaque item. In surgical malpractice jurisprudence, the New Hampshire Supreme Court addressed standard of care requirements, comparative fault, and the distinct liability of operating surgeons versus hospital staff in Anglin v. Kleeman, 140 N.H. 257 (NH Supreme Court 1995) during complex knee reconstruction surgery.

Retained surgical sponges and instruments cause severe internal inflammation, granulomas, bowel obstruction or perforation, chronic abdominal pain, fistulas, sepsis, and the need for invasive second surgeries to extract the object. Under the Discovery Rule in N.H. Rev. Stat. Ann. § 508:4, I, if a retained sponge remains hidden inside a patient for years before showing up on a CT scan or X-ray, the 3-year statute of limitations does not begin until the patient discovers the foreign object.

Operating on the Wrong Body Part

Wrong-site, wrong-side, wrong-level, and wrong-patient surgeries are inexcusable breaches of the standard of care. Examples in New Hampshire operating rooms include performing knee arthroscopy on the left knee instead of the right, fusing or decompressing the wrong lumbar vertebra during spinal surgery, or removing a healthy organ due to swapped pathology charts.

Every accredited hospital and surgery center in New Hampshire is required to follow the Joint Commission's Universal Protocol, which mandates three foolproof checkpoints:

  • Pre-Operative Verification: Confirming the patient's identity, signed consent, and imaging studies before entering the operating room.
  • Surgical Site Marking: The operating surgeon must physically mark the exact incision site with indelible ink while the patient is awake and involved.
  • The Mandatory Time-Out: Immediately prior to making the first incision, the entire surgical, nursing, and anesthesia team must stop all activity and verbally confirm the correct patient, correct procedure, and correct anatomical site/level.

Anesthesia Overdoses and Waking Up During Surgery

Anesthesia errors carried out by anesthesiologists or Certified Registered Nurse Anesthetists (CRNAs) often cause the most catastrophic injuries in surgical malpractice litigation because the patient's airway and cardiovascular stability are completely dependent on the anesthesia provider.

Actionable anesthesia malpractice under N.H. Rev. Stat. Ann. § 507-E:2 falls into two primary categories:

  • Anesthesia Overdose, Airway Failure, and Hypoxic Brain Damage: Failing to review the patient's weight, allergies, or sleep apnea history; administering an excessive dose of propofol, fentanyl, or local bupivacaine; performing an unrecognized esophageal intubation (placing the breathing tube into the stomach instead of the trachea); or muting alarms on the pulse oximeter and capnograph. Even 4 to 6 minutes of unaddressed oxygen deprivation causes permanent anoxic brain damage, coma, or death.
  • Intraoperative Awareness (Waking Up During Surgery): When an anesthesia provider administers a neuromuscular paralytic agent (so the patient cannot move a muscle or open their eyes) but negligently fails to deliver adequate inhaled gas or intravenous sedative anesthesia, the patient wakes up on the operating table fully conscious and experiencing excruciating surgical pain while paralyzed-frequently resulting in severe Post-Traumatic Stress Disorder (PTSD).

Post-Op Infection Mismanagement

While minor superficial wound infections can occur without negligence, post-operative infections frequently cross the line into medical malpractice when caused by contaminated surgical technique or ignored post-operative warning signs:

  • Unnoticed Perforations During Laparoscopic Surgery: Nicking the bowel, bladder, common bile duct, or ureter during a gallbladder removal (cholecystectomy), hysterectomy, or colon resection and closing the patient up without repairing the leak, causing bile peritonitis or fecal sepsis.
  • Failure to Administer Prophylactic Antibiotics: Neglecting to administer required pre-incision intravenous antibiotics or using improperly sterilized surgical hardware or implants.
  • Premature Discharge and Ignored Sepsis: Discharging a post-op patient who has a spike in white blood cell count, fever, tachycardia, or foul-smelling wound drainage, or ignoring calls from a patient at home who is developing life-threatening septic shock or necrotizing fasciitis.
Surgical Error TypeHospital Reporting Duty (RSA 151:38)Key Proof of NegligenceNH Filing Window (RSA 508:4)
Retained Sponge or InstrumentMandatory Never Event Report to NH DHHSFailed OR sponge/tool count & post-op X-ray/CT showing foreign body3 years from date of discovery on scan
Wrong-Site / Wrong-Level SurgeryMandatory Never Event Report to NH DHHSFailure to mark site or perform mandatory pre-incision Time-Out3 years from surgery
Anesthesia Overdose / AwarenessMandatory if resulting in serious disability/deathAnesthesia vital sign logs, end-tidal CO2 drops, dosing errors3 years from surgery
Post-Op Bowel Leak / SepsisCase-dependent based on severityOperative note, ignored fever/WBC labs, delayed re-exploration3 years from injury or discovery

Step-by-Step Process in New Hampshire

If you or a loved one suffered a serious surgical error at a facility in Manchester, Nashua, Portsmouth, Lebanon, or Dover, taking the following steps preserves critical evidence for your claim.

Step 1: Request the Operative Report, Anesthesia Record, and Count Logs

Under N.H. Rev. Stat. Ann. § 332-I:1, request your complete hospital chart, specifically asking for the surgeon's dictated Operative Report, the intraoperative Anesthesia Record (showing minute-by-minute oxygen saturation, blood pressure, and drug dosages), the circulating nurse's Sponge and Instrument Count Sheet, and all post-operative pathology and radiology scans.

Step 2: Check Your Hospital Bill for Prohibited Never Event Charges

If your injury involved a retained foreign object, wrong-site surgery, or another preventable adverse event covered by N.H. Rev. Stat. Ann. § 151:38, verify that the hospital has reported the incident to the New Hampshire Department of Health and Human Services, Concord and audit your itemized statements to ensure you and your insurer are not billed for corrective care prohibited under federal CMS Hospital-Acquired Condition rules and insurer contracts.

Step 3: Retain Board-Certified Surgical and Anesthesia Experts

To satisfy N.H. Rev. Stat. Ann. § 507-E:2, your malpractice attorney will have an independent surgeon or anesthesiologist review the operative records and confirm in writing that the injury resulted from a breach of the standard of care rather than an unavoidable risk.

Step 4: File the Civil Complaint in Superior Court

Your attorney drafts and files a formal civil complaint and writ of summons in accordance with Superior Court Civil Rules in the county Superior Court with jurisdiction over the case, such as Hillsborough County Superior Court North, Manchester, Hillsborough County Superior Court South, Nashua, Rockingham County Superior Court, Brentwood, or Strafford County Superior Court, Dover.

Step 5: Conduct Superior Court Discovery and Rule 32 ADR Proceedings

Following the exchange of formal written discovery and depositions, parties in New Hampshire Superior Court engage in alternative dispute resolution under Superior Court Rule 32. In clear-cut surgical never event cases-such as a retained sponge or wrong-site incision-hospital liability insurers frequently agree to early mediation to settle the claim before trial.

Step 6: File a Licensing Complaint and Consult a Local Trial Lawyer

Patients can report dangerous surgeons or anesthesiologists to the New Hampshire Board of Medicine, Concord through the Office of Professional Licensure and Certification (OPLC) online complaint portal. To maximize your civil recovery, search our US lawyer directory to connect with an experienced New Hampshire surgical malpractice attorney.

How Much Does it Cost in New Hampshire?

  • Contingency Legal Fees ($0 Upfront): New Hampshire surgical malpractice lawyers represent injured patients on a contingency fee basis, typically charging 33.3% to 40% of the gross settlement or trial award, with zero attorney fees owed if the case is unsuccessful.
  • Superior Court Filing Fees: Filing an original civil action in New Hampshire Superior Court costs $325.00, plus sheriff service fees of roughly $40 to $75.
  • Expert Witness and Litigation Expenses: Retaining surgical and anesthesiology experts to review records, testify at depositions, and appear at trial before a jury typically costs $8,000 to $25,000+, advanced in full by the law firm.
  • Uncapped Pain and Suffering Damages: Because the New Hampshire Supreme Court invalidated damage caps in Carson v. Maurer, 120 N.H. 925 (NH Supreme Court 1980), juries can award full, uncapped compensation for revision surgeries, permanent disfigurement, lost income, and emotional trauma.

How Long Does the Process Take?

The timeline for resolving a surgical malpractice claim in New Hampshire depends on whether liability is contested:

  • Statute of Limitations (3 Years + Discovery Rule): Under N.H. Rev. Stat. Ann. § 508:4, I, claims must be filed within 3 years of the surgery, or within 3 years of the date a hidden injury (such as a retained surgical sponge or clip) is reasonably discovered.
  • Never Event Early Settlements (9 to 18 Months): When an X-ray proves a sponge was left inside a patient or a surgeon operated on the wrong limb, hospital insurers often seek confidential mediation and settle within 9 to 18 months.
  • Contested Surgical & Infection Claims (18 to 36 Months): Cases involving disputed bowel perforations, sepsis, or anesthesia management that proceed through full Superior Court discovery, expert depositions, and trial typically take 18 to 36 months.

Frequently Asked Questions (FAQ)

Can I still sue for surgical malpractice in New Hampshire if I signed an informed consent form before surgery?

Yes. Signing an informed consent form only shows you were informed of known, unavoidable medical risks. It never waives your right under N.H. Rev. Stat. Ann. § 507-E:2 to sue if the surgeon or anesthesiologist performed the procedure negligently, operated on the wrong site, or left an instrument inside your body.

What if a surgical sponge was left inside me during an operation 5 years ago and I just found out today?

You can still file a lawsuit. Under the Discovery Rule in N.H. Rev. Stat. Ann. § 508:4, I, when a foreign object is negligently left inside a patient and cannot reasonably be detected until a later scan or surgery, the 3-year statute of limitations starts running on the date you discovered (or reasonably should have discovered) the retained object.

Can a New Hampshire hospital bill me for the second surgery needed to remove a retained sponge?

No. Under federal Centers for Medicare & Medicaid Services (CMS) Hospital-Acquired Condition policies and commercial insurer contracts, hospitals and ambulatory surgical centers are barred from billing patients or insurers for reportable never events and the subsequent corrective procedures required to remedy them, while N.H. Rev. Stat. Ann. § 151:38 mandates reporting of the event to the state.

Is waking up during surgery grounds for a medical malpractice claim in New Hampshire?

Yes, if caused by anesthesia negligence. If an anesthesiologist or CRNA paralyzed you with a neuromuscular blocker but failed to administer adequate general anesthesia or failed to check vaporizer levels, you can pursue damages under N.H. Rev. Stat. Ann. § 507-E:2 for the physical pain experienced during surgery and resulting psychological trauma or PTSD.

Who is held liable for a retained surgical sponge-the surgeon or the hospital nurses?

Often both. While the hospital employs the circulating nurses and scrub techs responsible for performing the physical sponge and instrument count, the lead surgeon also has an independent duty to inspect the surgical cavity before closing. As illustrated in Anglin v. Kleeman, 140 N.H. 257 (NH Supreme Court 1995) regarding hospital and physician liability, plaintiffs commonly name both the lead surgeon and the facility employing the surgical nursing staff as co-defendants.

Are there caps on surgical malpractice settlements in New Hampshire?

No. Under the New Hampshire Supreme Court's landmark ruling in Carson v. Maurer, 120 N.H. 925 (NH Supreme Court 1980), statutory caps on medical malpractice non-economic damages violate the New Hampshire Constitution, allowing injured surgical patients to recover full, uncapped damages.


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