Informed consent (IC) is a foundational legal and ethical process that enables patients to make voluntary, informed decisions regarding their medical care within healthcare organizations. It needs clear and effective communication between patients and healthcare providers about their diagnoses, benefits and risks, and alternative therapies. This process typically culminates in a documented agreement. Instead of being deliberately designed, this IC evolved via ethical principles and legal precedents that emphasize patient autonomy. Early rulings, such as Schloendroff v. Society of New York Hospital in 1914, framed consent as protection against battery. Later cases established the obligation to disclose information relevant to patient decision-making. Today, IC reflects for patient autonomy, as well as the ethical principles for justice, beneficence, and nonmaleficence.
Despite its importance, IC practices remain inconsistent across healthcare clinical settings. Variability exists in determining which interventions need consent and how this consent is obtained. These differences are frequently driven by efficiency pressures, implicit biases, and institutional norms instead of patient-centered reasoning. The current analysis focuses on the institutional policies and literature that highlight the recurring ethical concerns in IC practices.
One important inconsistency involves the perceived risk threshold for needing consent. Procedures are often subject to stricter consent needs compared to medicines, even when the risks are comparable. For instance, placing an arterial line typically requires written consent, whereas inserting a peripheral IV does not, despite both carrying risks. Such discrepancies suggest that thresholds for consent are often arbitrary and vary widely across institutions.
Another concern is the bundling of medical care within a single IC process. Patients are often asked to consent to multiple interventions simultaneously, like anaesthesia and surgery details, under a single form. While this approach can improve efficiency, it can obscure the distinct risks associated with each component. For example, anaesthesia carries its own potential complications that may not receive adequate attention when included within surgical consent. Similarly, ICU admission forms may include consent for a wide variety of interventions, limiting detailed discussions of specific procedures performed in the ICU.
Context also impacts how the risks are communicated to patients. The same procedure may be presented differently depending on the clinical situation. For example, a central line insertion may not be explicitly discussed during preoperative consent for a major surgery but would require detailed consent in the context of dialysis. Likewise, certain risks such as nerve injury may be emphasised in some procedures like mastectomy, but not in others where they are equally relevant. These variations highlight how clinical context, rather than consistent ethical standards, often shapes disclosure.
Legal and historical factors further contribute to inconsistencies. Some treatments are subject to more rigorous consent processes due to past litigation. For example, drugs with known teratogenic risks often involve extensive patient education and verification steps, while others with similar risks may not. This uneven application reflects how legal precedent, rather than ethical uniformity, influences IC practices.
Different standards also guide disclosure. The reasonable physician standard prioritizes what clinicians believe should be disclosed, whereas the reasonable patient standard focuses on what an average patient would want to know. A more individualized approach tailors details to each patient’s requirements, but it is less consistently applied in practice.
Additionally, variability exists in who obtains consent and how it is documented. Consent is sometimes obtained by providers who are not performing the procedure, which potentially limits the accuracy and depth of information conveyed. Less experienced clinicians, such as trainees, are often assigned this responsibility.
These inconsistencies reveal that IC is often shaped by practical constraints rather than ethical principles. To improve the process, healthcare systems should adopt standardized, patient-centered approaches informed by patient perspectives. Clearer guidelines on risk thresholds, appropriate unbundling of procedures, and consistent practices for documentation and disclosure are essential.
In conclusion, IC remains a critical yet fragmented aspect of health care. Variations in its implementation can undermine patient understanding and autonomy, which highlights the need for more consistent, ethically grounded practices that prioritize meaningful patient engagement.
Reference: Harrington CL, Bosco CM, Wightman SC, Shakhsheer BA. The ethical problems with informed consent: How inconsistencies undermine patient autonomy. Am J Surg. 2026;253:116821. doi:10.1016/j.amjsurg.2026.116821
