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QS complexes in the inferior leads suggests an old heart attack
involving the inferior surface of the heart. This is a dangerous issue. It needs medical/interventional management. You need to do an ECHO and/or angiogram to see where the arteries are blocked and also may need a Coronary angioplasty
. Stay away from fatty food, junk food. Eat fresh fruits and vegetables. Control blood sugar. Check the Blood lipid levels as well. See your Cardiologist as soon as possible.