Two very different questions

During a heart attack, an artery has blocked and muscle is dying: emergency angioplasty and stenting restores the blood flow, and the case for it is not in doubt [3][5].

Stable angina is a different situation: a narrowing that predictably brings on chest tightness with exertion and eases with rest. Here nothing is blocking acutely — and here the question "do I need a stent?" deserves a much more careful answer [3][4].

What the landmark trials found

The ISCHEMIA trial asked whether routinely opening stable narrowings — with stents or surgery — prevents heart attacks and death better than good modern medication alone. Broadly, it did not: in stable disease, tablets done properly protect as well as an early procedure for most people [2].

ORBITA-2, published in the New England Journal of Medicine in 2023, asked the other half of the question: do stents at least relieve the symptoms? Patients with stable angina, taking little or no anti-anginal medication, received either a real stent or a placebo procedure — and those who received the real one had meaningfully less angina [1]. So stents genuinely work on symptoms; what they do not do, in stable disease, is extend life for most patients [1][2].

So when is a stent the right answer?

Putting the trials together, a fair summary for stable angina [1][2][3]:

  • Medication and risk-factor treatment come first — they protect, and they often control symptoms [2][3].
  • A stent is a reasonable next step when angina still limits your life despite good medication — its job is your symptoms, and it does that job well [1].
  • A narrowing on a scan, by itself and without symptoms, is rarely a reason for a stent in stable disease [2][4].

How the decision should be made

Not every narrowing that looks tight restricts blood flow, which is why interventional cardiologists can measure a narrowing's real effect with a pressure wire during the angiogram before treating it [4]. And because the honest options usually include "excellent medication and no procedure", this is a decision to make with your cardiologist on your symptoms, your preferences and your measurements — not from the picture alone [1][2].

What to ask

Four questions cut through:

  • Is my situation stable — or is this urgent?
  • What would best-possible medication achieve for me first?
  • Does my narrowing actually restrict flow — has it been measured?
  • If we do nothing invasive now, what exactly are we watching for?