This disturbing ritual, which was filmed by MailOnline in Mr Otrupo’s sitting-room in Caracas, Venezuela, may appear cruel to Western eyes. But to the father-of-five, the traditional healing ceremony was an act of desperation.
For the collapse of the economy has seen hospitals run out of drugs as shamans, herbalists, witches and priests cash in on people's fears.
When MailOnline visited the El Algodonal hospital, one of the largest in Caracas, there was no running water or toilet paper, let alone medication.
A five-month-old baby lay wheezing in a dirty cot as there were no drugs for her acute asthma. Her mother, too, was considering propitiating the gods.