Poisoning
EDs in the UK see a significant number of patients (347 per 100 000/year and ever-increasing) with acute overdose of drugs. Most of them are ingested orally, but other modes of intake can be used, such as IV and nasal. Sometimes it is not uncommon to see a patient presenting themselves to the ED feeling unwell after having ingested packets of Class I drugs to transport across continents. Another group of patients include those who present themselves after self-harming with a knife or blade on their wrists, arms, abdomen, or other parts of the body. These patients may have a previous history of drug overdose. Management of situations such as those described above requires both a generalized approach and specific actions against each drug involved. The common antidotes are covered in this chapter and advice is available in all EDs through the NPIS (<WEB>www.toxbase.org) to deal with such emergencies, particularly with the treatments of unusual poisons. I encourage all the junior doctors to use the website for all the poison cases presenting to the ED to help build up confidence while treating them. Readers should note though that the URLs provided in this chapter can be accessed only by foundation and more senior doctors as the NPIS does not provide usernames and passwords to medical students. The priorities in the management of poisoned patients are similar to other ED presentations (ABCDE). Most of these patients require supportive therapy for recovery. Some poisons have specific antidotes which could be life-saving and are to be administered straightway. The initial assessment should be able to indicate whether or not the patient has been exposed to a specific poison for which an antidote is available. Hypoglycaemia must be excluded in every patient who presents with a low GCS score or convulsions by performing a capillary blood glucose by the bedside. A patient with respiratory depression, low GCS, and constricted pupils should be given naloxone while preparations are made to secure the airway. The recognition of such a pattern sometimes may direct the treating clinician towards a specific poison immediately, so that treatment with a definitive antidote can be given without delay.