ABSTRACT

To investigate the consequences of routine laboratory tests that lead to surgical delay or high cost in patients with a normal medical history and physical examination who undergo minor surgical interventions.

Files of 1,322 patients aged between 0-16 years that had undergone elective surgical intervention within six years were reviewed.

Of the 1,322 patients, 1,246 (94.3%) had normal physical examination and laboratory findings. Seventy-six children who had abnormalities in laboratory findings and physical examination were referred to pediatrics. Of the 76 pediatric referees, 42 (55.3%) were reevaluated and were diagnosed with upper respiratory tract infection (n=23; 30.2%), iron deficiency anemia (n=5; 6.5%), innocent murmur (n=4; 5.3%), thalassemia minor (n=2; 2.6%), lower respiratory tract infection (n=2; 2.6%), urinary tract infection (n=1; 1.3%), mumps (n=1; 1.3%), acute gastroenteritis (n=1; 1.3%), minimal aortic and tricuspid valve insufficiency (n=1; 1.3%), minimal aortic stenosis (n=1; 1.3%), atrial septal defect (n=1; 1.3%). Surgical interventions were delayed until the recovery of the infectious diseases. In 25 of the patients, repeated tests showed normal ranges after the second test; however nine (n=9) of the patients showed increased or decreased numbers of white blood cell counts and whose medical history and physical examination revealed signs and symptoms related to infection.

Routine laboratory tests contribute little to preoperative evaluation of children with normal history and physical examination undergoing low grade surgery.