Organophosphate poisoning is a life-threatening condition. The toxicity is due to the irreversible inactivation of cholinesterase. Apart from the enhanced muscarinic and nicotinic activities, cardiac toxicity is also possible. We present a case of organophosphate poisoning in which the electrocardiogram showed QT prolongation. The literature related to the topic is also reviewed.

Chung Chin Hung, Charles, MBB S(HK), FRCS (Glas g), FH KAM (Eme rgency Medic ine) We describe a case of acute on chronic theophylline intoxication with severe headache as the chief complaint in a Chronic Obstructive Pulmonary Disease (COPD) patient. Headache is a non-specific symptom. The intensity of headache is unusually severe in our patient, and is much worse than the headache commonly encountered by an experienced emergency physician. (Hong Kong j.emerg.med.