Background: Pressurized intraperitoneal aerosol chemotherapy (PIPAC) has emerged as a novel method to treat extensive, small volume peritoneal metastases. The clinical use of chemotherapy containing aerosols represents a potential occupational health hazard. We report the results of toxicological analysis during the first two clinical PIPAC procedures performed at Ghent University Hospital. Methods: After extensive preparation and in vitro testing, two patients were treated with PIPAC: the first using doxorubicin (2.86 mg in 51.43 mL) and cisplatin (14.28 mg in 164.3 mL), the second using oxaliplatin (182.10 mg in 186.42 mL). A standardized safety checklist was developed and used. Aerosol delivery was combined with electrostatic precipitation (ePIPAC). The following samples were obtained at several time points and locations: environmental air, floor surface wipes, surgeon's gloves, surgeon's hand wipes, circuit filters, and fluid from the water seal collection chamber container placed along the closed aerosol waste evacuating line. Platinum concentration was measured in these samples using voltammetry. Sample collection and analysis were performed by an independent external laboratory. Results: Platinum was not detected on the four floor locations after both procedures (detection limit 0.02 ng/ cm 2 ). Similarly, no platinum was detected in environmen-

Introduction During administration of chemotherapies, disconnection presents risks for nurses. Thus, it is recommended to flush the infusion line with solvent to reduce this risk and ensure that the entire dose is administered. Objectives of this study were to evaluate flushing practices and to investigate the efficiency of flushing, according to the type of hospitalization, in hospitalization (HU) or day-care unit (DCU), for three drugs. Methods Twenty secondary infusion lines were collected in five HU and 20 in two DCU. Flushing volumes were estimated by weighing solvent bags. The amount of residual drug was measured for secondary lines by mass spectrometry coupled with high-performance liquid chromatography. Results Chemotherapies were administered by 26 nurses. All of infusion lines contained chemotherapy after flushing. Flushing volumes, residual concentrations and flushing efficiencies were significantly different between these two types of units. In contrast, flushing volumes administrated did not differ between chemotherapy drugs. Conclusions Local recommendations are fully implemented in HU and partially in DCU. The use of small volumes in DCU is related to the patient length of stay, it may, also, be due to omitting the average tubing volume. All infusion lines still contained chemotherapy, including those with a flush volume much higher than recommended, showing that the risk of exposure persists. To achieve a rinse volume greater than 50 mL, it is necessary to use at least 100 mL. It is also important to insist on personal protective equipment and to consider closed safety system for administration.

Background: Occupational exposure to cytotoxic drugs can lead to significant health problems. This study was designed to evaluate the risk of 5-fluorouracil (5-FU) contamination for nurses when disconnecting the infusion line of an elastomeric pump from a non-coring needle, by comparing three configurations: the first one using standard Male and Female Luer lock (Group 1), the second one using a needle-free connector (NFC) and a Male Luer lock (Group 2) and the third one using a closed-system transfer device (CSTD), Qimono® (Group 3). Methods: In this in vitro study, 10 elastomeric pumps for each of the three groups were filled with 5-FU and a tissue mimicking the patient’s arm was placed below the connection between the infusion line and the tubing of non-coring needle. After 48 h of infusion, disconnection was performed by a nurse with a wipe soaked in a mix of chlorhexidine and isopropyl alcohol in order to mimic care practices. For each pump, the tissue, the pair of gloves and the wipes used during the disconnection were collected for analysis. Results: Median level of overall 5-FU contamination (gloves + wipes + tissues) in group 3 was significantly lower than in group 1 ( p = 0.018) and group 2 ( p = 0.036). There was no difference between groups 1 and 2. Results per sample type showed no difference in contamination between the three configurations for the gloves as well as for the tissues. Concerning the wipes, the lowest contamination was observed in group 3, representing a mean reduction of 61% compared to group 1 and a mean reduction of 43% compared to group 2. Conclusion: The use of Qimono® appears to significantly reduce 5-FU contamination when disconnecting infusion lines of an elastomeric pump unlike NFC and standard Luer lock.