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Factors affecting micro(nano)plastic release during intravenous therapy: Direct blood exposure.
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This study systematically evaluated factors affecting micro(nano)plastic (MNP) release from medical infusion products during intravenous therapy. Results indicated that MNPs are released into IV fluid at measurable levels, potentially delivering plastic particles directly into the bloodstream of patients.
Intravenous therapy could introduce micro(nano)plastics (MNPs) directly into the human blood, yet factors affecting their release remain poorly understood. This study systematically evaluates critical factors affecting MNP release from medical infusion products (MIPs) during intravenous therapy. Results showed that organic infusion solutions (e.g. glucose) induced 6.47 times higher of MNP release than that of distilled water, and MNP mass increased to 2.02 times with infusion volumes rising from 500 mL to 2000 mL. These results suggested that standard practice using only 500 mL distilled water for MIP quality assessment is inadequate, and necessitates the utilization of actual infusion solutions with larger volumes. A lower infusion rate (20 drops/min) and prolonged MIP storage period (>6 months) significantly increased MNP release into the human blood, thereby rising health risks, particularly for the elderly and children. Interestingly, these factors primarily influenced polyvinyl chloride MNP release, indicating that replacing them with safer alternatives is thus recommended for clinical use. Overall, these observations are promising for ensuring the safe use of MIPs and evaluating the potential health impacts of MNPs.
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Researchers found that common IV bags, tubes, and syringes release thousands of tiny plastic particles directly into the bloodstream during routine medical treatments. The particles, smaller than 4 micrometers, included types like PVC and polypropylene and were found in nearly all tested infusion products. This is a significant finding because it identifies a previously overlooked source of microplastic exposure that bypasses the body's natural barriers entirely.
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Researchers examined 16 batches of intravenous (IV) fluids packaged in polypropylene plastic bottles and found microplastic and nanoplastic particles in all of them, with concentrations reaching up to 10 million particles per milliliter. This is the first study to confirm that patients receiving IV infusions are being directly exposed to microplastics entering their bloodstream, though whether this causes harm remains to be studied.
Direct entry of micro(nano)plastics into human blood circulatory system by intravenous infusion
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Researchers found that standard intravenous infusion products release approximately 0.52 micrograms (up to 10^11 particles) of polyvinyl chloride micro- and nanoplastics per 250 mL infusion directly into the bloodstream. Using analytical methods sensitive down to 20 nm particles, the study identifies intravenous infusion as a previously overlooked but significant pathway for direct human exposure to microplastics.
Unraveling micro/nanoplastics and phthalates in infusion solutions: A novel integrated approach for quantification and cardiovascular cytotoxicity evaluation
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Researchers developed a new method to detect and measure micro- and nanoplastics in medical infusion solutions (IV bags) and found significant contamination in commonly used glucose and saline fluids. Nanoplastics dominated the contamination, with polyethylene, polypropylene, and polystyrene detected alongside phthalate chemicals that showed a strong correlation with plastic particle levels. The study suggests that IV therapy may be an overlooked route of direct plastic particle exposure into the bloodstream, and that combined exposure to nanoplastics and phthalates can have synergistic toxic effects on cardiovascular cells.
Nanoplastics in infusion system remains underexplored: Evidence from detected nanoplastics in hospital-sourced infusion products
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Researchers analyzed hospital-sourced infusion products from three brands for nanoplastic contamination using surface-enhanced Raman spectroscopy combined with dark-field microscopy. The study detected a variety of nanoplastic particles in infusion products, suggesting that intravenous therapy may represent an underexplored pathway for direct nanoplastic exposure in clinical settings.
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