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Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...
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Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
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The pharmacokinetic-pharmacodynamic (PK-PD) relationship describes the intricate link between drug exposure, efficacy, and toxicity, forming the foundation for optimal dosing regimens. This relationship uses mathematical modeling to characterize drug concentration-effect dynamics, ensuring precise therapeutic outcomes.Exposure represents the pharmacokinetic aspect of the PK-PD relationship, denoting the drug amount that elicits a biological response. It is typically quantified by administered...
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Tropical Cyclone Exposure and Psychoactive Drug-Related Death Rates.

Raenita Spriggs1, Victoria D Lynch1, Yuanyu Lu2

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Tropical cyclone exposure increases psychoactive drug-related deaths for up to three months following the event. This highlights the need to integrate substance use services into disaster planning.

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Area of Science:

  • Environmental Health
  • Epidemiology
  • Public Health

Background:

  • Tropical cyclones are increasingly frequent and severe, posing risks to community health.
  • Substance use and mental health issues are exacerbated by natural disasters.
  • Previous research has not comprehensively examined the link between tropical cyclone exposure and psychoactive drug-related deaths nationally.

Purpose of the Study:

  • To assess the association between county-level tropical cyclone exposure and psychoactive drug-related death rates in the United States.
  • To investigate how cyclone strength and demographic factors modify this association.

Main Methods:

  • A case-control study utilizing a Bayesian conditional quasi-Poisson model.
  • Data from January 1, 1988, to December 31, 2019, from contiguous US counties exposed to tropical cyclones.
  • Monthly psychoactive drug-related death rates were analyzed in relation to cyclone-exposed days, stratified by cyclone strength, age, sex, and social disadvantage.

Main Results:

  • Each additional cyclone-exposed day was linked to a 3.84% increase in psychoactive drug-related deaths in the exposure month, persisting for up to three months.
  • Younger adults (15-44 years) showed higher increases compared to older adults.
  • The association was significant only in low-poverty counties, irrespective of racial composition.

Conclusions:

  • Tropical cyclone exposure is associated with elevated psychoactive drug-related death rates for at least three months post-event.
  • Findings underscore the importance of incorporating substance use and mental health support into climate disaster preparedness and response.
  • Public health strategies should address the disproportionate impact on vulnerable populations in low-poverty areas.