Improvement in survival after paraquat ingestion following introduction of a new formulation in Sri Lanka
2008

Improvement in Survival after Paraquat Ingestion with New Formulation

Sample size: 586 publication 10 minutes Evidence: high

Author Information

Author(s): Martin Wilks, Fernando Ravindra, Ariyananda P. L, Eddleston Michael, Berry David J, Tomenson John A, Buckley Nicholas A, Jayamanne Shaluka, Gunnell David, Dawson Andrew

Primary Institution: Syngenta Crop Protection AG, Basel, Switzerland

Hypothesis

Does the new INTEON formulation of paraquat improve survival rates compared to the standard formulation?

Conclusion

The new INTEON formulation significantly reduces mortality and increases survival time for patients who ingest paraquat.

Supporting Evidence

  • Survival rates increased from 27.1% with the standard formulation to 36.7% with INTEON.
  • The median survival time improved from 2.3 days to 6.9 days with the new formulation.
  • A higher percentage of patients vomited within 15 minutes after taking INTEON compared to the standard formulation.

Takeaway

A new version of a poison called paraquat helps people who accidentally take it to live longer and have a better chance of surviving.

Methodology

The study collected clinical data from 586 patients with paraquat ingestion across nine hospitals in Sri Lanka, comparing outcomes before and after the introduction of the new formulation.

Potential Biases

The study was funded by Syngenta, the manufacturer of both formulations, which may introduce bias.

Limitations

The study could not completely rule out other factors influencing survival rates, such as differences in treatment across hospitals.

Participant Demographics

Most patients ingested paraquat deliberately, with a mix of ages and genders.

Statistical Information

P-Value

0.002

Confidence Interval

95% CI 2.0%–17.1%

Statistical Significance

p = 0.002

Digital Object Identifier (DOI)

10.1371/journal.pmed.0050049

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