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Percutaneous coronary intervention — usually called angioplasty and stenting — treats a narrowed or blocked heart artery from the inside. A fine tube is passed from the wrist or groin up to the heart, a balloon opens the narrowing, and a small metal mesh stent is left behind to hold it open. In a heart attack it is done as an emergency to restore blood flow as fast as possible, and it saves heart muscle and lives. Done for stable angina, it relieves symptoms but does not, on its own, prevent future heart attacks. That distinction shapes everything about what follows: the medication, the exercise, and the risk-factor work do the long-term protecting, and the stent does not replace them.
What the procedure involves
A catheter is advanced from the radial or femoral artery to the coronary ostia under fluoroscopy. Contrast defines the anatomy, a guidewire is passed across the lesion, a balloon dilates it, and a drug-eluting stent is deployed to hold the vessel open and limit restenosis. Most procedures take under an hour. Intravascular imaging and physiological assessment of lesion significance are increasingly used to guide both the decision to stent and the result.
| Indication | Timing | What it achieves |
|---|---|---|
| STEMI | Primary PCI, as fast as possible — the target is door-to-balloon under 90 minutes | Restores flow, limits infarct size, reduces mortality |
| NSTEMI / unstable angina | Early invasive strategy, usually within 24–72 hours by risk | Reduces recurrent ischaemia and reinfarction |
| Stable angina | Elective, after optimal medical therapy has been tried | Symptom relief. Does not reduce myocardial infarction or death |
That last row is the one that most often needs restating to patients, and sometimes to staff. See coronary artery disease and post-myocardial infarction.
Access site, and why it matters to you
Radial access is now the default in most centres, and it changes the early rehabilitation picture entirely: no bed rest, no groin compression, ambulation within a couple of hours, and a markedly lower rate of major bleeding. Femoral access — still used for larger-bore equipment, complex intervention and mechanical support — requires several hours of bed rest with the affected leg straight, and carries the risk of retroperitoneal haematoma and pseudoaneurysm.
- After radial access: avoid weight-bearing through that wrist, heavy gripping and lifting for a short period as advised locally. Check the band has been removed and the site is stable before hand or upper-limb work.
- After femoral access: observe the bed-rest period, log-roll rather than hip-flex, and inspect the site before first mobilisation. New back or flank pain with hypotension is a retroperitoneal bleed until proven otherwise.
Early mobilisation and the ward phase
Medication that shapes rehabilitation
Dual antiplatelet therapy — aspirin with a P2Y12 inhibitor — is mandatory after stenting, typically for 6 to 12 months depending on indication and bleeding risk. Two practical consequences:
Beta-blockade blunts the heart-rate response, so exercise prescription uses rating of perceived exertion and the talk test rather than heart-rate targets alone. Where a patient reports bruising or bleeding, adjust contact and resistance activity rather than withholding exercise.
Cardiac rehabilitation — the missed intervention
PCI patients are referred to cardiac rehabilitation less often, and attend less often, than patients who have had bypass surgery — and the reason is the very feature that makes PCI attractive. A patient who was catheterised on Tuesday and home on Wednesday, with no wound, no sternotomy and no pain, does not feel like someone who has had a serious cardiac event. The absence of a visible injury removes the prompt.
The consequence is that the interventions which actually reduce future events — exercise training, smoking cessation, lipid and blood pressure control, adherence support, psychological care — reach a minority of the people who need them. Framing this explicitly at the bedside, before discharge, is more effective than a referral letter alone. See cardiac rehabilitation.
Exercise prescription after PCI
- Uncomplicated elective PCI: exercise can generally begin within days. Progress on symptoms and perceived exertion; there is no stent-related restriction on aerobic training.
- After STEMI: prescription follows infarct size, ventricular function and any residual ischaemia rather than the fact of the stent. A large infarct with reduced ejection fraction is managed as heart failure.
- Resistance training is safe and beneficial, introduced after the access site has healed — upper-limb loading is the component to stage around a radial site.
- Residual disease matters. Incomplete revascularisation is common, and exertional angina during rehabilitation is a clinical finding to report, not a training limit to work around.
- Driving and return to work follow national guidance and differ between elective PCI and PCI after infarction; give the patient the actual rule rather than a general reassurance.
Complications to recognise
- Stent thrombosis — abrupt, severe, with chest pain and ST elevation; a medical emergency, most often after antiplatelet interruption.
- Restenosis — gradual return of exertional angina over months, distinct from thrombosis in tempo and severity.
- Access-site complications — haematoma, pseudoaneurysm, retroperitoneal bleed after femoral access; radial artery occlusion, usually asymptomatic.
- Contrast-associated acute kidney injury — more likely with pre-existing renal impairment, diabetes and large contrast volumes.
- Arrhythmia and reperfusion injury — in the periprocedural window after primary PCI.
- Anxiety and depression — common after an acute event, under-detected in a 24-hour admission, and a strong predictor of non-attendance at rehabilitation.
Evidence summary
- Primary PCI in STEMI is unambiguous. It reduces mortality, reinfarction and stroke compared with fibrinolysis where it can be delivered promptly, and time to reperfusion is the dominant variable.1
- Elective PCI in stable disease relieves symptoms without preventing events. COURAGE found no reduction in death or myocardial infarction when PCI was added to optimal medical therapy, and ISCHEMIA reached the same conclusion in patients with moderate to severe ischaemia. The angina benefit is real; the prognostic benefit is not.2,3
- ORBITA compared PCI against a placebo procedure in single-vessel stable angina and found no significant difference in exercise time — a result that reframed how much of the symptomatic benefit is attributable to the stent itself.4
- Radial access reduces mortality and major bleeding compared with femoral access in acute coronary syndromes (MATRIX), which is why it is now default practice and why the rehabilitation pathway is faster.5
- Exercise-based cardiac rehabilitation reduces cardiovascular mortality and hospital admission across coronary heart disease populations, and improves quality of life. The effect size does not depend on whether revascularisation was surgical or percutaneous.6
- Referral and uptake after PCI are substantially lower than after CABG, and this gap is consistently documented rather than incidental — a service-design problem rather than a patient one.7
Reasoning. The clinical implication of COURAGE, ISCHEMIA and ORBITA taken together is that in stable disease the stent buys symptom relief while the secondary-prevention package buys the prognosis. That inverts the intuitive hierarchy for most patients, who experience the procedure as the treatment and the tablets and exercise as aftercare. Correcting that understanding is a legitimate and evidenced part of the physiotherapy role, and it is best done in the admission, while the event still feels significant to the patient.
References & evidence base
- Keeley EC, Boura JA, Grines CL. Primary angioplasty versus intravenous thrombolytic therapy for acute myocardial infarction: a quantitative review of 23 randomised trials. Lancet 2003;361(9351):13–20.
- Boden WE, O'Rourke RA, Teo KK, et al. Optimal medical therapy with or without PCI for stable coronary disease (COURAGE). N Engl J Med 2007;356(15):1503–1516.
- Maron DJ, Hochman JS, Reynolds HR, et al. Initial invasive or conservative strategy for stable coronary disease (ISCHEMIA). N Engl J Med 2020;382(15):1395–1407.
- Al-Lamee R, Thompson D, Dehbi HM, et al. Percutaneous coronary intervention in stable angina (ORBITA): a double-blind, randomised controlled trial. Lancet 2018;391(10115):31–40.
- Valgimigli M, Gagnor A, Calabró P, et al. Radial versus femoral access in patients with acute coronary syndromes (MATRIX): a randomised multicentre trial. Lancet 2015;385(9986):2465–2476.
- Dibben G, Faulkner J, Oldridge N, et al. Exercise-based cardiac rehabilitation for coronary heart disease. Cochrane Database Syst Rev 2021;(11):CD001800.
- Sumner J, Harrison A, Doherty P. The effectiveness of modern cardiac rehabilitation: a systematic review of recent observational studies in non-attenders versus attenders. PLoS One 2017;12(5):e0177658.
References are numbered in citation order (Vancouver/BMJ style) and were current at the time of writing. Guidelines are living documents — verify against the latest version before clinical use.
Physiotherapy around major chest, cardiac and upper abdominal procedures — from open surgery to bronchoscopic, catheter-based and bedside treatments — aims to reduce chest complications and shorten the return to normal function.
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