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Antimicrobial Agents and Chemotherapy, September 2001, p. 2460-2467, Vol. 45, No. 9
0066-4804/01/$04.00+0 DOI: 10.1128/AAC.45.9.2460-2467.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
Continuous versus Intermittent Infusion of Vancomycin in Severe
Staphylococcal Infections: Prospective Multicenter Randomized
Study
Marc
Wysocki,1,*
Frederique
Delatour,2
François
Faurisson,2
Alain
Rauss,
Yves
Pean,4
Benoit
Misset,5
Frank
Thomas,6
Jean-François
Timsit,7
Thomas
Similowski,8
Herve
Mentec,9
Laurence
Mier,10
Didier
Dreyfuss,10 and
The Study Group
Medico-Surgical Intensive Care Unit1
and Microbiology,4 Institut Mutualiste
Montsouris, Medico-Surgical Intensive Care Unit, Hôpital
Saint-Joseph,5 Medico-Surgical Intensive
Care Unit, Hôpital de Diaconesses,6
INSERM U132 and Infectious
Diseases Critical Care Unit,7 Hôpital
Bichat-Claude Bernard, and Respiratory Intensive Care Unit,
Hôpital de la
Pitié-Salpêtrière,8
Paris, Medico-Surgical Intensive Care Unit,
Hôpital V. Dupouy, Argenteuil,9 and
Medical Intensive Care Unit, Hôpital Louis Mourier,
Colombes,10 France
Received 28 June 2000/Returned for modification 2 January
2001/Accepted 5 June 2001
A continuous infusion of vancomycin (CIV) may provide an
alternative mode of infusion in severe hospital-acquired
methicillin-resistant staphylococcal (MRS) infections. A multicenter,
prospective, randomized study was designed to compare CIV (targeted
plateau drug serum concentrations of 20 to 25 mg/liter) and
intermittent infusions of vancomycin (IIV; targeted trough drug serum
concentrations of 10 to 15 mg/liter) in 119 critically ill patients
with MRS infections (bacteremic infections, 35%; pneumonia, 45%).
Microbiological and clinical outcomes, safety, pharmacokinetics, ease
of treatment adjustment, and cost were compared. Microbiological and
clinical outcomes and safety were similar. CIV patients reached the
targeted concentrations faster (36 ± 31 versus 51 ± 39 h, P = 0.029) and fewer samples were required for
treatment monitoring than with IIV patients (7.7 ± 2.2 versus
11.8 ± 3.9 per treatment, P < 0.0001). The
variability between patients in both the area under the serum concentration-time curve (AUC24h) and the daily dose given
over 10 days of treatment was lower with CIV than with IIV (variances, 14,621 versus 53,975 mg2/liter2/h2
[P = 0.026] and 414 versus 818 g2
[P = 0.057], respectively). The 10-day treatment
cost per patient was $454 ± 137 in the IIV group and was 23%
lower in the CIV group ($321 ± 81: P < 0.0001).
In summary, for comparable efficacy and tolerance, CIV may be a
cost-effective alternative to IIV.
*
Corresponding author. Mailing address:
Réanimation Polyvalente, Institut Mutualiste Montsouris, 42 Bd.
Jourdan, 75674 Paris Cedex, France. Phone: 331.56.61.61.79. Fax:
331.56.61.61.99. E-mail: marc.wysocki{at}imm.fr.

The members of the study group are listed in an appendix at the end
of the
text.
Antimicrobial Agents and Chemotherapy, September 2001, p. 2460-2467, Vol. 45, No. 9
0066-4804/01/$04.00+0 DOI: 10.1128/AAC.45.9.2460-2467.2001
Copyright © 2001, American Society for Microbiology. All rights reserved.
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