Our expert says:
Please check the link to make sure it was my most recent article on the topic you saw: http://www.health24.com/medical/Condition_centres/777-792-2557-2561,32367.asp
This is based on recommendations from a South African emergency medical specialist in snake bite(Dr Philip Cohen). Even so, the experts do sometimes disagree! As to your queries
1) I don't think suction cups are bad, as such, it's more that they are considered ineffective.
2) As I understand it, a tourniquet is not the same as a compression bandage. The idea behind a traditional tourniquet for snakebite, which is now widely discredited because it can lead to tissue death and limb loss, is to tie a bandage tightly to constrict bloodflow as much as possible to prevent venom travelling to vital organs. A compression bandage is applied firmly but not too tightly over a larger area, the idea being to slow venom-laden blood somewhat, but not completely. (It is not recommended at all for cytotoxic venom)
Dr Cohen's primary message, however, is that the first and most valuable action to take is to get the victim to a hospital as fast as possible. The other first-aid measures are very much secondary, and not very effectual.
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