Dual Processing Model for Medical DecisionMaking

Case: 1:

Chief Complaint: “Pain in Right Side” A 40-year-old man presents to his primary care provider (PCP) with right upper quadrant (RUQ) pain for 2 days. The pain is described as “sore” and rated 4 on 1 to 10 pain scale. The pain is intermittent and not worsening. He reports food does not seem to make it better or worse. No nausea or vomiting or diarrhea or constipation are reported.

Vital signs: heart rate, 75; blood pressure, 122/78; respiration rate, 15; afebrile.

Examination: No acute distress. Abdomen: mildly tender on palpation at RUQ; no masses, hepatomegaly or splenomegaly.

Diagnosis: Gallbladder disease.

Plan: Abdominal ultrasound with reflexive cholescintigraphy (hepatobiliary iminodiacetic acid) scan within 1 week. Patient instructed to call provider if worsening symptoms occur. He is also told to avoid any fatty foods or alcohol consumption. The patient is agreeable to plan.

Follow-up: Two days after the initial visit, the patient calls his PCP with worsening RUQ pain. Ultrasound imaging was scheduled for later that day. Patient then started having shortness of breath while at home and went to the local emergency department (ED). Computed tomography angiography of the chest revealed a right-sided pulmonary embolism. Patient did not have any family history of clotting disorders and no recent surgery, immobilization, or travel. Patient had been on testosterone injections for several years for low testosterone levels, and this was not updated in his medical record at his PC

Case 2

Chief Complaint: “Fever and Sleepy” A 3-year-old girl presents with her mother to a walk-in clinic with fever, nasal drainage, and fatigue for 2 days. She was observed hiding her head in her mother’s chest during the examination.

The presentation occurred during flu season. The clinician had 6 positive flu tests that day, all with similar symptoms, but most included a cough.

Vital signs: heart rate, 125; respiration rate, 20; blood pressure, 100/72; temperature, 100.8F.

Examination: Lungs clear, heart rate regular, no murmur. Head, eyes, ears, nose, and throat: normocephalic, conjunctivae clear, tympanic membrane without bulging or redness, pharynx normal, nares normal with clear drainage, tonsils 1þ, no erythema or exudate. The patient did not want to look at the clinician in a brightly lit room. The patient was lethargic and had limited tearing when crying. Rapid flu test: Negative.

Diagnosis: Presumptive seasonal influenza.

Plan: Supportive care, including encouraging fluids, Over-the-counter acetaminophen for fever, and age-appropriate antiviral medication for the flu was prescribed.

Follow-up: Parents were unable to keep her fever down over the next 1 day, and she progressively became more lethargic. The patient was taken to the ED, and a diagnosis of viral meningitis and dehydration was made. The patient spent several days in the hospital but did completely recover.

Describe the Dual Process Theory and Reasoning Process and how it applies to making decisions for the advanced practice nurse.
What are cognitive dispositions to respond? How are these applied in the APN setting?
Describe cognitive debiasing.
Describe how Type 1 (System 1) and Type 2 (System 2) processes and strategies can be applied to each case to help the NP make decisions and to decrease potential diagnostic errors.
What considerations for change to practice should the NP consider in each situation as a way to decrease the chance of future diagnostic and care decisions?

Full Answer Section

       
  • Confirmation bias: The tendency to seek information that confirms existing beliefs.
  • Anchoring bias: The tendency to rely too heavily on the first piece of information encountered.
  • Availability heuristic: The tendency to overestimate the likelihood of events that are easily recalled.
Cognitive Debiasing Cognitive debiasing involves techniques to reduce the impact of cognitive biases. Some strategies include:
  • Seeking diverse perspectives: Consulting with colleagues or seeking second opinions.
  • Actively challenging assumptions: Questioning one's own beliefs and considering alternative explanations.
  • Using checklists and decision aids: Following structured approaches to decision-making.
Applying System 1 and System 2 Thinking to the Cases Case 1:
  • System 1: The NP may have relied on intuition and pattern recognition to diagnose gallbladder disease, as the patient's symptoms were relatively straightforward.
  • System 2: A more deliberate approach would have involved considering alternative diagnoses, such as pulmonary embolism, especially given the patient's risk factors (testosterone therapy).
Case 2:
  • System 1: The NP may have relied on a quick diagnosis of influenza based on the patient's symptoms and the prevalence of flu cases.
  • System 2: A more thorough assessment, including a more detailed physical exam and laboratory tests, could have identified the underlying viral meningitis.
Considerations for Change in Practice
  • Enhanced Clinical Reasoning: APNs should continue to develop their clinical reasoning skills through education and training.
  • Patient-Centered Care: Prioritizing patient-centered communication and building strong relationships with patients can improve diagnostic accuracy.
  • Risk Assessment: Identify patients at high risk for serious conditions and tailor investigations accordingly.
  • Critical Appraisal of Evidence: Stay updated on the latest evidence-based guidelines and critically appraise research.
  • Self-Reflection: Regularly reflect on clinical decisions to identify areas for improvement.
By understanding the interplay between System 1 and System 2 thinking, and by employing effective cognitive debiasing strategies, APNs can make more accurate and timely clinical decisions, ultimately improving patient outcomes.  

Sample Answer

     

Dual Process Theory and Reasoning Process in Advanced Practice Nursing

Dual Process Theory posits that human cognition involves two systems:

  • System 1: Fast, intuitive, and emotional thinking.
  • System 2: Slow, deliberate, and logical thinking.

In the context of advanced practice nursing (APN), both systems play a crucial role in clinical decision-making.

Cognitive Dispositions to Respond

Cognitive dispositions are mental tendencies or habits that influence how we perceive and interpret information. APNs should be aware of their own cognitive biases and strive to minimize their impact on decision-making. Some common cognitive dispositions include: