Table 5

Comparison of clinical and infection parameters between catheter subtypes

Antibiotic-impregnated (n=188)Silver-bearing
p Value
30-day infection
Time to infection (median)
8 (1–29)11 (2–29)7 (1–39)0.19
Length of antibiotic therapy for ERI (median)
7.5 (1–28)14 (1–87)10 (1–37)0.23
Cultured microorganisms
 Coagulase-negative staphylococcus (p)436.3225.0440.0
Staphylococcus aureus (p)327.3225.0110.0
Enterococcus spp. (p)19.1225.0
Enterobacter spp. (n)112.5110.0
Klebsiella pneumoniae (n)19.1110.0
Morganella morganii (n)110.0
Escherichia coli (n)19.1
Klebsiella (n)19.1
Pseudomonas aeruginosa (n)110.0
Corynebacterium (p)112.5
Streptococcus spp. (p)110.0
30-day mortality*
30-day mRS*
 Good (mRS 0–2)5035.27944.13526.70.01
 Poor (mRS 3–5)5035.26636.95844.3
  • *30-day mortality and 30-day mRS based on 452 non-duplicate patients; (p)=gram stain positive; (n)=gram stain negative.

  • ERI, external ventricular drain-related infection; mRS, modified Rankin Score.