(i) 2% of patients may have a heart attack during ring teaching.
(ii) Excessive bleeding may occur during operation.
(iii) The balloon may burst.
(iv) Circumcision of the ring may cause complete cessation of blood flow.
(v) Blood clots may occur at the site of stent placement.
(vi) Patient may be re-booked.
(vii) Sometimes blood clots form in the area where the ring is applied and the clot enters the blood vessels of the brain causing a stroke.
(viii) Many may be allergic.
(ix) It is an expensive medical procedure.