Fecal carriage of extended-spectrum beta-lactamase-producing Escherichia coli and Klebsiella pneumoniae in patients and asymptomatic healthy individuals.

Fecal carriage of extended-spectrum beta-lactamase (ESBL)-producing organisms was assessed in 272 inpatients, 162 outpatients, and 426 asymptomatic healthy individuals. Of 860 stool samples cultured, 152 (17.7%) yielded ESBL-producing organisms.

Antimicrobial resistance patterns of gram-negative bacteria isolated from urine cultures at a general hospital.

To evaluate the antimicrobial resistance patterns of the Gram-negative organisms isolated from urine culture, we retrospectively analyzed the urine cultures and antibiotic sensitivity tests of inpatients and outpatients in our hospital between 1999 and 2002. A total of 11,659 urine specimens were analyzed of which 2054(17.6%) showed significant growth; 1764 (85.

An accelerated method for the detection of extended-spectrum beta-lactamases in urinary isolates of Escherichia coli and Klebsiella pneumoniae.

We prospectively studied an accelerated phenotypic method by incorporating the double disk synergy test in the standard Kirby-Bauer disk diffusion susceptibility testing, to evaluate a protocol for the rapid detection of extended-spectrum beta-lactamases (ESBL) in urinary isolates of Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae).

Induction of clindamycin resistance in erythromycin-resistant, clindamycin susceptible and methicillin-resistant clinical Staphylococcal isolates.

Objectives: To demonstrate the in vitro ability of erythromycin to induce clindamycin in erythromycin resistant and clindamycin susceptible clinical isolates of Staphylococci.

Methods: We studied 291 clinical isolates of erythromycin-resistant (ER-R) clindamycin-susceptible Staphylococci (CL-S) at Almana General Hospitals, Al-Khobar, Dammam, Saudi Arabia during the period from June 2004 to May 2005. The isolates included 70 Staphylococcus aureus, 81 Methicillin Resistant Staphylococcus aureus (MRSA) and 140 coagulase-negative Staphylococci (CNS).

Prevalence and antimicrobial susceptibility of extended-spectrum beta-lactamase-producing Escherichia coli and Klebsiella pneumoniae in a general hospital.

Background: The prevalence of extended-spectrum beta-lactamases (ESBLs) varies between countries and institutions. We studied the prevalence of ESBL among clinical isolates of Escherichia coli and Klebsiella pneumoniae and analyzed patterns of susceptibilities to different antimicrobial agents in a general hospital in Saudi Arabia over a 15-month period.

Methods: A total of 2455 clinical isolates of E.

Extended-spectrum beta-lactamases in urinary isolates of Escherichia coli, Klebsiella pneumoniae and other gram-negative bacteria in a hospital in Eastern Province, Saudi Arabia.

Objective: To evaluate the prevalence and antimicrobial susceptibility of extended spectrum beta-lactamase (ESBL) producing gram-negative organisms isolated from patients with urinary tract infection (UTI).

Methods: We carried out this study at Almana General Hospital, Eastern Province, Kingdom of Saudi Arabia, during the period August 2003 to October 2004. We studied urinary isolates of Escherichia coli (E.

Prevalence of extended spectrum beta-lactamase among multidrug resistant gram-negative isolates from a general hospital in Saudi Arabia.

Objective: To determine the prevalence of extended spectrum beta-lactamase (ESBL) among multidrug resistant isolates of enterobacteriaceae and non-fermenting gram-negative bacilli.

Methods: This study was carried out at the Almana General Hospital, Eastern Province, Kingdom of Saudi Arabia, during the period March 2002 through to June 2003. Multidrug resistant gram-negative isolates from patients admitted to the surgical, medical, pediatric, long-term care and intensive care units were studied for the presence of the ESBL enzyme.