Patients who have scheduled a gastric bypass (RYGB) in UZ Leuven, will be questioned preoperatively and one, three, six and twelve months after gastric bypass surgery. The purpose of this study is to explore current practice regarding the use of medication and medication counseling after RYGB and to examine the changes in dietary pattern before and after RYGB.
Target group: patients who have scheduled a gastric bypass in UZ Leuven. Patients will be questioned preoperatively and one, three, six and twelve months after gastric bypass surgery. Each assessment will be performed during a routine consultation. The following aspects will be investigated: * Medication The investigators have composed a questionnaire to examine which drugs the patients use, adherence, information received about medication and from whom,… * Clinical parameters Every consultation, concentrations of hemoglobin, iron, hepcidin, vitamin B12,…. and a 24h urine collection to determine calcium excretion will be collected. * Dietary intake The investigators will ask patients to keep a food record during two non-consecutive days preceding each consultation. In this food record patients have to note all consumed foods and beverages with the right/estimated amounts. This makes it possible to see the changes of the composition of the meals before and after RYGB. * Body composition
Study Type
OBSERVATIONAL
Enrollment
100
KU Leuven - Centre for Pharmacotherapy
Leuven, Belgium
Medication use
Patients will be questioned preoperatively and one, three, six and twelve months after gastric bypass surgery. A questionnaire will be used to examine which drugs patients use and to what level they are adherent to treatment recommendations.
Time frame: one year
Changes in dietary pattern before and after RYGB
The investigators will ask patients to keep a food record during two non-consecutive days preceding each consultation. In this food record patients have to note all consumed foods and beverages with the right/estimated amounts. This makes it possible to see changes of the composition of the meals before and after RYGB. The correlation between the dietary/total intake and clinical parameters will be investigated.
Time frame: one year
Medication counseling
Patients will be questioned preoperatively and one, three, six and twelve months after gastric bypass surgery. A questionnaire will be used to examine what kind of information they received about medication use pre- and post-RYGB.
Time frame: one year
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.