AI Article Synopsis
- Research on RIPAC shows that patient posture greatly influences the distribution of chemotherapy agents, with the Trendelenburg position yielding better results for aerosol spread in the abdomen.* -
- The study involved testing on nine pigs using a specific aerosol delivery method (DreamPen) and highlighted that depth and nozzle positioning affect penetration depth and distribution.* -
- Results indicate that optimal distribution and penetration for anti-cancer agents can be achieved at a medium depth (around 4 cm) with the Trendelenburg position, suggesting important considerations for treatment effectiveness.*
Article Abstract
Even though rotational intraperitoneal pressurized aerosol chemotherapy (RIPAC) has been developed to improve the distribution and penetration depth of anti-cancer agents by pressurized intraperitoneal aerosol chemotherapy (PIPAC), the optimal nozzle position and patient's posture have not been investigated. Thus, we used nine pigs weighing 50-60 kg, and sprayed 150 mL of 1% methylene blue as an aerosol through the nozzle, DreamPen (Dreampac Corp., Wonju, Republic of Korea), with a flow rate of 0.6 ml/min under a pressure of 140 to 150 psi for RIPAC in six and three pigs with supine and Trendelenburg positions, respectively. When we evaluated its distribution and penetration depth, even distribution among 13 regions of the abdomen was observed in three pigs with Trendelenburg position regardless of the depth of the nozzle. Regarding penetration depth, the numbers of regions with maximal penetration depth were high in the 2 cm depth of the nozzle with supine position ( = 5) and the 4 cm depth with Trendelenburg position ( = 3). Conclusively, even distribution and maximal penetration of anti-cancer agents can be expected during RIPAC in the medium depth (4 cm) between the nozzle inlet and the visceral peritoneum located on the opposite side of it and the Trendelenburg position.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9695236 | PMC |
| http://dx.doi.org/10.3390/jpm12111799 | DOI Listing |
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