With regard to the buckling over* of the ib heart: This means that his ib heart has been constricted while his hati heart is in its place in* the blood of the lung. As a result (or through the buckling?) it (i.e. the ib heart?) arrives at (a condition) of small(ness). This means that the hati heart will become hot; then, as a result of this, his ib heart will become tired. His appetite is small (and) he will become fastidious/choosy.
*Reading uncertain