LAUSR

OBJECTIVE To examine situations where shared decision making (SDM) in practice does not achieve the goal of a patient-centered decision. METHODS We explore circumstances in which elements necessary to realize SDM - patient readiness to participate and understanding of the decision - are not present. We consider the influence of contextual factors on decision making. RESULTS Patients' preference and readiness for participation in SDM are influenced by multiple interacting factors including the patient's comprehension of the decision, their emotional state, the strength of their relationship with the clinician, and the nature of the decision. Uncertainty often inherent in information can lead to misconceptions and ill-formed opinions that impair patients' understanding. In combination with cognitive biases, these factors may result in decisions that are incongruent with patients' preferences. The impact of suboptimal understanding on decision making may be augmented by the context. CONCLUSIONS There are circumstances in which basic elements required for SDM are not present and therefore the clinician may not achieve the goal of a patient-centered decision. PRACTICE IMPLICATIONS A flexible and tailored approach that draws on the full continuum of decision making models and communication strategies is required to achieve the goal of a patient-centered decision.