Informed consent is a foundational ethical and legal requirement in surgical practice. Central to informed consent is a clear discussion of the risks associated with a proposed surgical procedure. The medical literature emphasizes that risk disclosure is not merely a formality, but a process aimed at supporting patient autonomy, shared decision-making, and realistic expectations. Determining which risks must be discussed with surgical patients requires balancing legal standards, clinical relevance, and individual patient factors. This review summarizes key categories of risks that should be communicated to surgical patients based on established ethical guidelines and surgical literature.
A fundamental category includes general surgical and anesthetic risks. Regardless of the specific surgical procedure, common and foreseeable risks should be discussed with patients, such as bleeding, infection, pain, scarring, and delayed wound healing. Significant anesthesia-related risks—including nausea, vomiting, aspiration, allergic reactions, cardiovascular events, and, in rare cases, death—should also be discussed. Although serious anesthetic complications are uncommon, the literature supports disclosure because anesthesia is integral to most surgical interventions and carries independent risk.
A second essential category is procedure-specific risks. These are complications uniquely associated with the operation being performed and often represent the most clinically significant information for patients. Examples include nerve injury during orthopedic or spine surgery, bile duct injury during cholecystectomy, anastomotic leak after bowel surgery, or urinary incontinence and erectile dysfunction following prostate surgery. Even if the probability of these complications is low, they must be disclosed when the potential impact on quality of life is substantial. Courts and professional societies consistently emphasize that severity, not just frequency, determines whether a risk is material to informed consent.
Risks related to patient-specific factors must also be discussed before the surgical procedure. Comorbid conditions such as diabetes, obesity, cardiovascular disease, pulmonary disease, or immunosuppression can significantly increase perioperative risk. Advanced age, frailty, smoking status, and poor nutritional status are additional modifiers of surgical outcomes. The literature stresses that risk discussions should be individualized, rather than relying on generic consent language, to reflect how a patient’s unique clinical profile alters expected outcomes.
Another important area involves risks of postoperative outcomes and recovery. Patients should be informed about the likelihood of prolonged recovery, functional limitations, need for rehabilitation, chronic pain, or incomplete symptom relief. Unrealistic expectations are a common source of postoperative dissatisfaction and litigation. Discussing the possibility that surgery may not fully resolve symptoms—or may require additional procedures in the future—is therefore a critical component of informed consent.
The literature also highlights the importance of discussing alternatives to surgery and the risks of non-treatment. Informed consent is incomplete without explaining reasonable non-surgical options, such as medical management, watchful waiting, or less invasive procedures, along with
their respective risks and benefits. Patients should also understand the potential consequences of declining surgery, including disease progression, functional decline, or increased future risk.
Finally, rare but catastrophic risks should be explicitly discussed with surgical patients, even if the likelihood of occurrence is low. Although events such as stroke, permanent disability, or death generally occur infrequently, they carry profound consequences. Ethical frameworks and legal standards generally agree that these risks should be disclosed when they are foreseeable, even if statistically uncommon, because a reasonable patient would consider them important when deciding.
In conclusion, effective risk disclosure in surgery encompasses general operative and anesthetic risks, procedure-specific complications, patient-specific risk modifiers, postoperative and recovery-related risks, alternatives to surgery, and rare but serious adverse outcomes. The literature supports a patient-centered, individualized approach that prioritizes clarity, relevance, and shared decision-making. Thorough risk discussions not only fulfill ethical and legal obligations but also enhance trust, improve patient satisfaction, and support better surgical outcomes.
References
1. Beauchamp TL, Childress JF. Principles of Biomedical Ethics. 8th ed. Oxford University Press; 2019.
2. Hall DE, Prochazka AV, Fink AS. Informed consent for clinical treatment. CMAJ. 2012;184(5):533-540. DOI: 10.1503/cmaj.112120
3. American College of Surgeons. Statements on principles: informed consent. Bull Am Coll Surg. 2016;101(1):15-16. https://www.facs.org/about-acs/statements/statements-on-principles/
4. Spatz ES, Krumholz HM, Moulton BW. The new era of informed consent: getting to a reasonable-patient standard through shared decision making. JAMA. 2016;315(19):2063-2064. DOI: 10.1001/jama.2016.3070
5. McKneally MF, Martin DK. An entrustment model of consent for surgical treatment. World J Surg. 2000;24(11):1414-1419. DOI: 10.1067/mtc.2000.106525