You hold: ♠ K93 ♥ A ♦ J632 ♣ QJ543

Even if you have the machinery to show a 5-4-3-1 type via a three-heart splinter, I would still bid three no-trump directly and not give away any information. A singleton ace is not the desired holding with which to show shortness. I might check for five spades via puppet Stayman if I had it available. Certainly, with a singleton heart and A-J-x-x in diamonds, I would want to show my hand type.