Ultrasound scans done by surgeons for patients with acute abdominal pain: a prospective study

Objective: To evaluate the routine use of abdominal ultrasonography (US) in patients admitted to the surgical emergency unit with acute abdominal pain . Design: Prospective study with a three-step evaluation of patients over a 1 2-month period. Setting: University hospital, Switzerland. Subjects: 496 patients (male/female = 234/262, mean age 45 years) who prese nted with acute abdominal pain. Interventions: Every patient underwent routine investigations and had an ab dominal US by the attending surgeon. Main outcome measures: Clinical diagnosis, post-ultrasonography diagnosis a nd final diagnosis. Results: US improved the correct diagnostic rate from 3 48 (70%) to 414 (83%). The diagnostic accuracy for acute appendicitis and b iliary tract disease improved after US from 455 (92%) to 488 (98%) and from 463 (93%) to 490 (99%), respectively; the corresponding sensitivities and specificities were 91% and 99% and 94% and 99%. Conclusions: Ultrasonography should be part of routine surgical investigati on and should be mastered and used by surgeons.