Surgery requires precision, coordination, and strict safety procedures. Patients trust that medical teams will carefully account for every instrument and material used during a procedure. Unfortunately, mistakes can occur. One of the most serious surgical errors happens when a foreign object is accidentally left inside a patient’s body after surgery.
These incidents are known as retained surgical objects (RSOs) and are considered preventable medical errors. When this occurs, patients may suffer infections, internal injuries, and the need for additional surgeries. In many cases, this type of error may form the basis of a medical malpractice claim.
Below are answers to some of the most common questions patients ask about foreign objects left in the body after surgery.
What Happens If a Surgeon Leaves an Object Inside Your Body?
If a surgical object is left inside a patient after a procedure, it can lead to serious medical complications such as infection, pain, inflammation, organ damage, or internal blockages. These errors are considered “never events,” meaning they should not occur when proper surgical safety procedures are followed. Patients harmed by retained surgical objects may have the right to pursue a medical malpractice claim against the responsible healthcare providers.
Key Takeaways
- A foreign object left in the body after surgery is called a retained surgical object (RSO).
- Common items left behind include surgical sponges, gauze, clamps, needles, or fragments of medical instruments.
- Symptoms may include pain, infection, swelling, or unexplained complications after surgery.
- Retained surgical objects are considered preventable medical errors.
- Patients harmed by this mistake may have legal rights under medical malpractice law.
What Is a Retained Surgical Object?
A retained surgical object occurs when a medical tool or surgical material is accidentally left inside a patient’s body during a procedure.
Common examples include:
- Surgical sponges
- Gauze or surgical pads
- Clamps or forceps
- Surgical needles
- Pieces of broken medical instruments
Hospitals and surgical teams follow strict protocols designed to prevent these errors. These typically include instrument counts, surgical checklists, and verification procedures before a surgical site is closed.
How Often Do Retained Surgical Objects Occur?
Retained surgical objects are considered rare but still occur in operating rooms across the United States. Patient safety researchers have estimated that thousands of cases may occur each year, although many incidents go unreported.
Because hospitals have strict safety protocols designed to prevent these mistakes, retained surgical objects are typically classified as “never events.” In other words, they are medical errors that should not happen when proper procedures are followed.
What Symptoms Might Indicate a Foreign Object Was Left Inside the Body?
Some patients discover a retained object shortly after surgery, while others may not notice symptoms for months or even years.
Possible warning signs include:
- Persistent or worsening pain after surgery
- Fever or infection
- Swelling or inflammation
- Unexplained digestive issues
- Drainage from the surgical wound
- A lump or mass near the surgical area
- Internal abscesses
Many retained objects are discovered when doctors order X-rays, CT scans, or MRIs to investigate unexplained symptoms.
Why Are Retained Surgical Objects Dangerous?
Foreign objects left inside the body can cause serious medical complications. The body may react to the object as a foreign substance, triggering inflammation or infection.
Potential complications may include:
- Severe infections
- Organ damage
- Sepsis
- Internal bleeding
- Intestinal blockages
- Chronic pain
- The need for additional corrective surgeries
In some cases, a patient may require multiple procedures to remove the object and repair damage caused by the surgical error.
Can a Surgeon Be Sued for Leaving a Surgical Object Inside a Patient?
In many situations, yes.
Healthcare providers have a legal duty to follow accepted medical standards when performing surgery. Leaving a surgical sponge, instrument, or other object inside a patient may be considered a breach of the standard of care, which can form the basis of a medical malpractice claim.
Because these errors typically occur when safety procedures fail, retained surgical object cases may provide strong evidence of negligence.
Who May Be Responsible for a Retained Surgical Object?
Several parties may share responsibility depending on the circumstances of the procedure.
Potentially responsible parties may include:
- The surgeon performing the operation
- Surgical nurses responsible for instrument counts
- Operating room staff
- The hospital or surgical facility
Medical malpractice investigations often review surgical records, operating room procedures, and staff communication to determine how the error occurred.
How Are Retained Surgical Objects Discovered?
In some cases, the surgical team may realize the mistake shortly after the procedure if an instrument count does not match.
However, many retained objects are discovered later when patients experience complications. Doctors may identify the object through diagnostic imaging such as:
- X-rays
- CT scans
- MRIs
- Ultrasound imaging
Once discovered, surgery may be required to remove the object and address any related complications.
How Long Can a Foreign Object Remain in the Body After Surgery?
In some cases, retained surgical objects are discovered quickly. In others, they may remain in the body for months or even years before symptoms appear.
There have been documented cases where patients did not discover the object until years after their original procedure, often when unexplained pain or infection prompted further medical testing.
What Do Medical Authorities Say About Retained Surgical Objects?
Patient safety organizations classify retained surgical objects as preventable medical errors. Hospitals are expected to implement multiple safeguards to reduce the risk of these incidents.
Common safety measures include:
- Instrument and sponge counts before and after surgery
- Surgical safety checklists
- Communication protocols among surgical staff
- Radiopaque markers on surgical sponges that can be detected by X-ray
Despite these precautions, retained surgical objects still occur when safety procedures break down.
Can surgical sponges be left inside the body?
Yes. Surgical sponges are one of the most commonly reported retained surgical objects because they are small and frequently used during procedures.
How are retained surgical objects discovered?
They are often discovered through imaging tests such as X-rays or CT scans when a patient experiences unexplained symptoms after surgery.
Can a retained surgical object cause infection?
Yes. Foreign objects inside the body can cause infections, abscesses, and serious medical complications if not removed.
Is leaving a surgical instrument inside a patient considered malpractice?
In many cases, yes. Retained surgical objects are typically considered preventable errors and may support a medical malpractice claim.
What Compensation May Be Available in a Retained Surgical Object Case?
Patients who suffer harm due to a surgical error may be entitled to compensation for damages such as:
- Medical expenses related to corrective surgery
- Hospital and treatment costs
- Lost wages or loss of earning capacity
- Pain and suffering
- Long-term medical care or rehabilitation
The specific damages available depend on the circumstances of the case and the injuries involved.
How Baron, Herskowitz & Cohen Helps Patients After Surgical Errors
Cases involving foreign objects left inside the body can be medically complex and emotionally distressing. Investigating what happened during a surgical procedure often requires reviewing surgical records, consulting with medical experts, and understanding hospital protocols.
The attorneys at Baron, Herskowitz & Cohen represent individuals harmed by medical negligence and surgical errors. Our team works closely with medical professionals and investigators to determine how the mistake occurred and to pursue accountability when healthcare providers fail to meet the required standard of care.
If you or a loved one suffered complications after surgery and later discovered a foreign object may have been left inside the body, it may be important to understand your legal options.
