Serum Creatine Phosphokinase Level as a Prognostic Marker for Organophosphorus Poisoning and Its Correlation With Peradeniya Organophosphorus Poisoning Scale

Increased severity of OP poisoning as measured by the POP score, the requirement for higher doses of atropine, reduced levels of BChE, longer hospital stays, a greater need for ventilatory support, and a higher risk of death were associated with elevated serum CPK levels at the time of admission. Therefore, the estimation of serum CPK on admission is advisable in patients with OP poisoning because serum CPK can reliably indicate severity.