European Journal of Clinical Pharmacology

, Volume 75, Issue 5, pp 647–654 | Cite as

Effect of Roux-en-Y gastric surgery on ciprofloxacin pharmacokinetics: an obvious effect?

  • Ana Belén Rivas
  • Amanda Lopez-Picado
  • María del Rosario Salas-Butrón
  • Ana Terleira
  • Andres Sanchez Pernaute
  • Antonio José Torres Garcia
  • Carmen Moreno Lopera
  • Luis Miguel Chicharro
  • Fernando Bandrés
  • Miguel Angel Rubio Herrera
  • Antonio PortolésEmail author
  • Emilio Vargas



To evaluate pharmacokinetic parameters of ciprofloxacin in patients undergoing Roux-en-Y gastric surgery (RYGS).


Controlled, single-dose, open-label study in patients undergoing RYGS. Healthy overweight/obese patients 18–60 years old were included. The assessment was performed once in control patients and three times in case patients (before surgery and 1 and 6 months after surgery). In each visit, the subjects received a single oral dose of ciprofloxacin 500 mg. Venous blood samples were obtained at baseline and 0.5, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4, 8 and 14 h after ciprofloxacin intake. Pre- and post-surgery variables were compared using paired ANOVA or the Wilcoxon tests and control vs cases using ANOVA or Mann Whitney. Given the post-surgery change in body weight, the parameters were corrected by dose (mg)/body weight (kg). The analysis was performed using SPSS.


Ciprofloxacin Cmax was significantly reduced 1 month after surgery (1840.9 ± 485.2 vs 1589.6 ± 321.8 ng/ml; p = 0.032) but not 6 months after. Cmax on the sixth month was lower than Cmax in control group (2160.4 ± 408.6 vs 1589.6 ± 321.8 ng/ml; p < 0.001). After correcting by the dose (mg)/patient’s body weight, both Cmax and AUClast showed significant decrease 1 and 6 months after surgery: Cmax, 289.1 ± 65.3 and 263.5 ± 52.1 (ng/ml)/(dose (mg)/weight (kg)) respectively vs 429.3 ± 127.6 (ng/ml)/(dose (mg)/weight (kg)) at baseline; AUC, 1340.6 ± 243.0 and 1299.2 ± 415.4 (h × ng/ml)/(dose (mg)/weight (kg)) respectively vs 1896.7 ± 396.8 (h × ng/ml)/(dose (mg)/weight (kg)) at baseline. Cmax 1 month post-surgery showed lower values than the control group (375.4 ± 77.4 vs 263.5 ± 52.1 ng/ml; p < 0.001).


Ciprofloxacin absorption is impaired 1 month and 6 months after RYGS. The effect on Cmax and AUClast faded on the sixth month due to weight loss. It is no necessary to modify the doses of ciprofloxacin in these patients.


Bioavailability Pharmacokinetic-pharmacodynamic Surgery Antibiotics Obesity 



This study had the support of The Spanish Clinical Research Network (SCReN) funded by Instituto de Salud Carlos III-Subdirección General de Evaluación y Fomento de la Investigación (PT13/0002/0003) and co-funded by The European Regional Development Fund (FEDER).


This study has been funded by Instituto de Salud Carlos III through the project PI11/01455 (co-funded by European Regional Development Fund/European Social Fund “Investing in your future”).

Compliance with ethical standards

The study protocol and informed consent documents were approved by the Hospital Clinico San Carlos Ethics Committee and by the Spanish Agency of Medicines and Medical Devices (AEMPS) prior to subject enrolment (EudraCT number: 2011-005609-61; ethics reference number: 11/128).

After receiving the information about the study risks and benefits, all subjects signed the informed consent document. Case patients also signed an informed consent for the surgical procedure.

Conflicts of interest

The authors declare that they have no conflict of interest.

Supplementary material

228_2018_2623_MOESM1_ESM.docx (18 kb)
ESM 1 (DOCX 18 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Ana Belén Rivas
    • 1
    • 2
  • Amanda Lopez-Picado
    • 1
  • María del Rosario Salas-Butrón
    • 3
  • Ana Terleira
    • 3
    • 4
  • Andres Sanchez Pernaute
    • 5
  • Antonio José Torres Garcia
    • 5
  • Carmen Moreno Lopera
    • 6
  • Luis Miguel Chicharro
    • 7
  • Fernando Bandrés
    • 7
  • Miguel Angel Rubio Herrera
    • 8
  • Antonio Portolés
    • 1
    • 3
    • 4
    Email author
  • Emilio Vargas
    • 3
    • 4
  1. 1.Unidad de Investigación Clínica y Ensayos Clínicos, Hospital Clínico San CarlosInstituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC)MadridSpain
  2. 2.Departamento de Enfermeria, Facultad Enfermería, Fisioterapia y PodologíaUniversidad Complutense de MadridMadridSpain
  3. 3.Servicio de Farmacología Clínica, Hospital Clínico San CarlosInstituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC)MadridSpain
  4. 4.Departamento de Farmacología, Facultad de MedicinaUniversidad Complutense de MadridMadridSpain
  5. 5.Servicio de Cirugía General y Digestiva, Hospital Clínico San CarlosInstituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC)MadridSpain
  6. 6.Centro de Salud Lucera, Servicio Madrileño de SaludMadridSpain
  7. 7.Cátedra Complutense de Diagnóstico e Innovación, Facultad de MedicinaUniversidad Complutense de MadridMadridSpain
  8. 8.Servicio de Endocrinología y Nutrición, Hospital Clínico San CarlosInstituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC)MadridSpain

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