Having received a number of texts and calls tonight....

as a emergency doc who studies cardiac arrest for a living: a mini thread on CPR and

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Over 80% of sudden firefighter cardiac deaths had both coronary artery disease + L ventricular hypertrophy. Get an annual firefighter physical!

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Toxins are an important cause of cardiac arrest. Stimulants like cocaine dilate the pupils, and can cause cardiac arrest via vasospasm in the heart. Depressants like heroin constrict the pupils, and can cause respiratory arrest.

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Next time you face a cardiac arrest, perhaps spacemen with diarrhoea will help you save a life... Check out my illustrated guide to the H's & T's! https://t.co/nX1kcsxTFt

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