Surgical Complication vs. Medical Error: A Peer Review Case Study

Case Overview

A 67-year-old patient underwent elective laparoscopic abdominal surgery for a condition that had not improved with conservative treatment. The preoperative evaluation supported the need for surgery, and the procedure was completed without a documented intraoperative complication.

During the first several hours after surgery, the patient remained stable.

Later that evening, the patient reported increasing abdominal pain and weakness. Nursing staff also documented an increasing heart rate. The patient’s blood pressure remained within an acceptable range, and the initial symptoms were considered consistent with normal postoperative recovery.

Over the next several hours, the patient’s condition continued to change. The heart rate remained elevated, blood pressure began to decrease, and laboratory testing showed a drop in hemoglobin.

The care team notified the surgeon of the patient’s condition. The initial plan was continued observation, repeat laboratory testing, and intravenous fluids.

Several hours later, the patient developed worsening hypotension and increasing abdominal pain. Repeat laboratory testing showed a further decrease in hemoglobin.

The surgeon evaluated the patient and ordered urgent imaging. The imaging showed findings concerning for intra-abdominal bleeding.

The patient returned to the operating room, where the surgeon identified and controlled the source of bleeding. The patient required a blood transfusion and a higher level of postoperative monitoring but ultimately recovered.

The case was referred for peer review because of the unplanned return to surgery and concern about whether the delay in recognizing postoperative bleeding contributed to the patient’s deterioration.

The Peer Review Question

At first glance, the case appears straightforward:

The patient experienced postoperative bleeding and required an unplanned return to the operating room.

However, postoperative bleeding is a recognized complication of many surgical procedures.

Therefore, the presence of bleeding alone does not establish that a medical error occurred.

The peer reviewer needed to answer two separate questions:

Was the postoperative bleeding a recognized surgical complication?

And:

Once signs of bleeding developed, did the care team recognize and manage the complication in a timely and appropriate manner?

This distinction became central to the review.

Step 1: Was the Surgery Appropriate?

The reviewer first evaluated whether the patient had an appropriate indication for surgery.

The medical record documented persistent symptoms despite conservative treatment. Diagnostic findings supported the diagnosis, and the planned procedure represented an accepted treatment option.

The reviewer found no concern with the decision to proceed with surgery.

Peer Review Finding: The indication for surgery met expectations.

Step 2: Was the Procedure Performed Appropriately?

The reviewer then examined the operative report.

The surgeon documented the procedure, surgical technique, estimated blood loss, and condition of the patient at the end of surgery. The operative report did not identify uncontrolled bleeding or another significant intraoperative problem.

Nothing in the available record suggested that the surgeon used an inappropriate technique or failed to address a recognized problem during the procedure.

Peer Review Finding: The surgical technique and intraoperative management met expectations based on the available documentation.

Step 3: Was the Complication Preventable?

The patient subsequently developed postoperative bleeding.

Because bleeding represents a recognized risk of abdominal surgery, the complication itself did not establish that the surgeon provided inappropriate care.

The reviewer found no clear evidence that a specific technical error caused the bleeding.

At this point, the peer review could reasonably classify the bleeding itself as a recognized surgical complication.

However, the review did not end there.

Step 4: Were the Warning Signs Recognized?

The reviewer reconstructed the postoperative timeline.

Early in the evening, the patient developed increasing pain and tachycardia. Later, laboratory results showed a decrease in hemoglobin. Blood pressure subsequently began to fall.

Each finding alone could have several explanations after surgery.

Together, however, the findings created an increasingly concerning clinical picture.

The combination of persistent tachycardia, worsening abdominal pain, decreasing blood pressure, and falling hemoglobin increased the likelihood of active postoperative bleeding.

The reviewer therefore examined whether the clinical response changed appropriately as the patient’s condition changed.

Step 5: Was the Response Timely?

The care team initially responded with observation, intravenous fluids, and repeat laboratory testing.

Early in the course, that approach may have been reasonable.

As additional warning signs appeared, however, the patient’s risk changed.

Persistent tachycardia combined with worsening pain, hypotension, and a continued decline in hemoglobin required more urgent evaluation.

The reviewer concluded that the medical record did not clearly support continued observation once the patient’s condition showed progressive deterioration.

Earlier bedside reassessment, diagnostic evaluation, or escalation of care may have led to earlier recognition of the postoperative hemorrhage.

Peer Review Finding: The initial postoperative bleeding represented a recognized complication. However, the response to the patient’s progressive signs of bleeding presented an opportunity for improvement.

Complication vs. Medical Error: Why the Difference Matters

This case demonstrates why peer review should not stop after identifying a known complication.

The central question was not simply:

“Is bleeding a known complication of this surgery?”

It was.

The more important question became:

“Once evidence of significant bleeding developed, did the clinical response remain appropriate?”

The answer changed as the patient’s condition changed.

The initial decision to monitor the patient may have been reasonable based on the information available at that time. Continued observation became more difficult to support as additional warning signs appeared.

This distinction allows peer review to evaluate the case fairly without assuming that a poor outcome proves that inappropriate care occurred.

Individual and System Factors

The review also examined whether the delay resulted solely from the surgeon’s actions.

The timeline showed several points of communication among nursing staff and the surgical team. This raised additional questions:

• Were changes in the patient’s condition clearly communicated?
• Did staff communicate the overall trend or individual findings?
• Did the surgeon receive all significant clinical information?
• Did the situation require earlier escalation?
• Were there barriers to obtaining timely bedside reassessment?
• Did the organization’s escalation process function as intended?

These questions matter because adverse outcomes often involve more than one clinical decision.

A complete peer review should identify whether the concern relates to individual practitioner performance, communication, escalation, system processes, or a combination of factors.

Key Lessons From the Case

This case highlights several important principles for surgical peer review.

A known complication is not automatically a medical error.
Postoperative bleeding can occur even when a surgeon provides appropriate care.

The occurrence and management of a complication require separate evaluation.
The initial bleeding may have been unavoidable, while the response to signs of continued bleeding may still present opportunities for improvement.

Clinical decisions must be evaluated in sequence.
A decision that was reasonable at one point may no longer be reasonable when the patient’s condition changes.

Trends matter.
Tachycardia, pain, falling hemoglobin, and decreasing blood pressure become more concerning when they occur together and progress over time.

Communication and escalation are part of the review.
Determining who knew what—and when they knew it—is often essential when evaluating postoperative deterioration.

Peer review should avoid outcome bias.
The reviewer should evaluate each decision based on the information available at that moment rather than using the eventual diagnosis to judge earlier decisions.

Peer Review Conclusion

Based on the available medical record, the postoperative bleeding represented a recognized complication of the surgical procedure, with no clear evidence that inappropriate surgical technique caused the event.

However, the patient’s progressive postoperative findings created increasing concern for active bleeding. As those findings accumulated, the need for prompt reassessment and further evaluation increased.

The case therefore illustrates an important distinction:

The complication itself may have been unavoidable, while the recognition and management of the complication may still present an opportunity to improve care.

That distinction is exactly why surgical cases require careful, objective peer review.

The Role of External Peer Review

Cases involving unexpected surgical outcomes are rarely answered by the outcome alone.

An independent reviewer can examine the indication for surgery, operative technique, postoperative course, clinical decision-making, communication, escalation, and response to complications to determine where the care met expectations and where opportunities for improvement may exist.