TY - JOUR

T1 - Rapid antibiotic drug-monitoring

T2 - Meropenem and ceftazidime determination in serum and bronchial secretions by high-performance liquid chromatography–integrated sample preparation

AU - Ehrlich, Markus

AU - Daschner, F. D.

AU - Kümmerer, Klaus

N1 - Funding Information: This work was supported by Zeneca and Glaxo Wellcome.

PY - 2001/2/25

Y1 - 2001/2/25

N2 - A sensitive and rapid HPLC assay for the determination of the beta-lactam antibiotics ceftazidime and meropenem in serum and bronchial secretions is described. HPLC-integrated sample preparation allows direct injection of serum samples without any pretreatment. Sputum samples need only a simple homogenisation and volume measurement but no liquefying reagents are necessary. The inline extraction technique is realized by automatically switching from the extraction column to the analytical column. After the matrix passed the extraction column, the retained analyte is quantitatively transferred to the analytical column where separation by isocratic HPLC is performed. Ceftazidime and meropenem are detected according to their absorption maxima at 258 and 296 nm, respectively. The detection limit of both antibiotics is estimated to be better than 0.5 μg/ml in serum as well as in sputum samples. The described procedure allows determination of the antibiotics within 30-45 min, thereby facilitating drug monitoring in clinical routine.

AB - A sensitive and rapid HPLC assay for the determination of the beta-lactam antibiotics ceftazidime and meropenem in serum and bronchial secretions is described. HPLC-integrated sample preparation allows direct injection of serum samples without any pretreatment. Sputum samples need only a simple homogenisation and volume measurement but no liquefying reagents are necessary. The inline extraction technique is realized by automatically switching from the extraction column to the analytical column. After the matrix passed the extraction column, the retained analyte is quantitatively transferred to the analytical column where separation by isocratic HPLC is performed. Ceftazidime and meropenem are detected according to their absorption maxima at 258 and 296 nm, respectively. The detection limit of both antibiotics is estimated to be better than 0.5 μg/ml in serum as well as in sputum samples. The described procedure allows determination of the antibiotics within 30-45 min, thereby facilitating drug monitoring in clinical routine.

KW - Chemistry

KW - Sputum

KW - Bronchial secretion

KW - Monitoring

UR - http://www.scopus.com/inward/record.url?scp=0035946006&partnerID=8YFLogxK

U2 - 10.1016/S0378-4347(00)00504-1

DO - 10.1016/S0378-4347(00)00504-1

M3 - Journal articles

VL - 751

SP - 357

EP - 363

JO - Journal of Chromatography B

JF - Journal of Chromatography B

SN - 1873-376X

IS - 2

ER -