ATI TEAS (Test of Essential Academic Skills) Version 7ReadingHard
A nurse is reviewing a patient's electronic health record (EHR) and sees a physician's note stating: 'Patient presents with acute onset of intense abdominal pain, guarding, and rebound tenderness. Labs show elevated WBC count. Suspect appendicitis. Consult surgery for emergent appendectomy.' What information from this note provides the strongest evidence for the physician's diagnosis?
- ALabs show elevated WBC count.
- BPatient presents with acute onset of intense abdominal pain.
- CConsult surgery for emergent appendectomy.
- DGuarding and rebound tenderness upon examination.
Show answer & explanationAnswer & explanation
Correct answer: D. Guarding and rebound tenderness upon examination.
Guarding and rebound tenderness are classic and highly specific physical examination findings for peritoneal irritation, strongly indicative of appendicitis, making them the strongest diagnostic evidence among the choices.
Why the other options are wrong
- A. An elevated WBC count indicates infection or inflammation generally, not specifically appendicitis.
- B. Acute, intense abdominal pain is a common symptom for many conditions, making it less specific for appendicitis alone.
- C. The consultation for surgery is a plan of action based on the diagnosis, not direct diagnostic evidence itself.
Diagnostic Evidence Strength
The strength of diagnostic evidence refers to how specific and indicative a particular finding (symptom, sign, lab result) is for a given disease, with physical exam findings like guarding and rebound tenderness being highly specific for acute abdominal pathology.
- Symptoms are subjective and less specific.
- Lab results can indicate general inflammation but lack specificity.
- Physical exam signs (like guarding) are objective and often highly specific.
- A plan of action (e.g., surgery consult) is a consequence of the diagnosis, not evidence of it.
Memory trick: Specific signs beat general pains; actions follow, don't explain.