…recorder Contraindications None. Practical obstacles are skin disease or allergy to the electrode gel, and marked body hair that cannot be shaved. Set up 1…

…must be taken into account). Known allergy to the preparation — rare; itching and urticaria are usually due to histamine release, not allergy. Concurrent MAO inhibitor…

…can be hard to find in older women. Two things separate the safe catheterisation from the harmful one: never forcing against resistance, and never catheterising…

…in case of known allergy, when exposed to potent allergens (e.g. wasp stings, peanuts, etc.) and in case of swollen airways or dermatological symptoms…