when are coronary artery stents needed

My husband has complained of sob, diaphoresis, and tightness in the chest for more than 6 months. He had an ECG< Echocardiogram, and a Thallium Stress test in June. He was told the tests were normal. His symptoms persisted. In August my husband had a heart cath and was told he had 4 blockages. A 25%,and  (2) 40% blockages,in the LAD, and a 99% blockage in his Rt Coronary artery.  He was sent home on Imdur, ASA , Toprol, Plavix, Diovan, Norvasc,, and Lopid 600mg.
he underwent a second cath and had the 99% RCA opened and 2 stents inserted. One of the 40% LAD blockages is now 60%.
He is to undergo a second Thallium stress test, and if the LAD "lights up" they will discuss what to do nextMy question is why were the 25.%  and the 2 blockages in the LAD not stented at the original heart cath?What is the best course of action for these 3 positively identified coronary artery blockages?

[Douglas Bogart, MD]

Besides the meds he is on he should be on a statin agent which can prevent the progression of the coronary artery disease.  He needs very aggressive treatment.

[Douglas Bogart, MD]

In general mild blockages are not stented but are treated with medication  which with diet, exercise and medication and risk factor modification can prevent coronary artery progression.