Picking The Right Antibiotic: Asymptomatic Bacteriuria During Pregnancy

OVERVIEW

This page is dedicated to providing a practical guide to how one should pick the correct antibiotic(s) to use in the setting of asymptomatic bacteriuria during pregnancy.

WHAT IS ASYMPTOMATIC BACTERIURIA DURING PREGNANCY?

We use the following features to try and define what exactly this condition is:

  • Pregnant patient: this is of course in the setting of pregnancy
  • Positive cultures: > 100,000 colonies/mL
  • Asymptotic patient: patient has no symptoms of infection
WHAT ARE OUR ANTIBIOTIC OPTIONS?

The following are all different choices for antibiotics:

  • Nitrofurantoin: 5-7 days
  • Amoxicillin or amoxicillin-caluvulanate: 3-7 days
  • Fosftomycin: singe dose
WHAT SHOULD BE AVOIDED?

The following antibiotics should be avoided: