Cardiology · United Arab Emirates

Persistent angina with non-obstructive coronary arteries

A 61-year-old man continued to experience exertional chest tightness after invasive coronary angiography reported no obstructive disease, and sought clarity on what the result did and did not exclude.

Cardiology United Arab Emirates Specialist report issued in 3 days

Clinical background

The patient had hypertension, type 2 diabetes and a family history of premature coronary disease. A CT coronary angiogram reported mild non-calcified plaque with less than 50% stenosis; invasive angiography confirmed non-obstructive epicardial disease. Symptoms persisted on a beta blocker and statin.

The referral question

What clinical entities are usually considered when angina persists despite non-obstructive coronary arteries, and what further assessment is typically discussed?

Anonymised clinical timeline

Dates are expressed as intervals rather than calendar dates, and identifying details have been altered, so that the sequence of care can be followed without identifying the patient.

  1. Month 0

    First presentation

    Exertional chest tightness on climbing two flights of stairs, relieved by rest. Background of hypertension, type 2 diabetes and a father with myocardial infarction at 54.

  2. Month 0 + 3 weeks

    CT coronary angiography

    Mild non-calcified plaque in the proximal left anterior descending artery, stenosis reported as under 50%. Calcium score 96.

  3. Month 2

    Medical therapy started

    Beta blocker and high-intensity statin commenced; sublingual glyceryl trinitrate supplied.

  4. Month 5

    Invasive coronary angiography

    Performed for ongoing symptoms. Reported non-obstructive epicardial coronary arteries; no intervention. No coronary function testing performed at the same sitting.

  5. Month 6

    Symptoms persist

    Patient continued to report exertional tightness with a reproducible exercise threshold and occasional early-morning episodes at rest.

  6. Month 7

    MedReview 365 case opened

    Two hospitals' records consolidated into one timeline; symptom diary aligned with investigation dates and medication changes.

  7. Month 7 + 3 days

    Specialist report issued

    Reviewed by a consultant cardiologist with a dedicated chest-pain clinic practice, with no affiliation to either treating hospital.

  8. Month 8

    Discussed with treating cardiologist

    Further functional assessment arranged by the treating team; lipid management reviewed at the same appointment.

Documents reviewed

Every item supplied by the patient was indexed before review. Nothing was assessed in isolation from the rest of the record.

  • Emergency department and cardiology clinic letters (two hospitals)

    Merged into a single chronological record to expose gaps and duplications.

  • CT coronary angiogram report and calcium score

    Plaque burden and stenosis grading reviewed against symptom severity.

  • Invasive coronary angiography report and images

    Assessed for what was and was not tested — specifically the absence of coronary function testing.

  • Twelve-lead ECGs and exercise ECG

    Reviewed for ischaemic change and chronotropic response on beta blockade.

  • Echocardiogram report

    Left ventricular function and regional wall motion assessed.

  • Lipid profile, HbA1c, renal function

    Compared against secondary-prevention targets usually applied in diabetes with established plaque.

  • Patient-completed symptom diary (8 weeks)

    Used to characterise exertional versus rest-predominant episodes.

Questions raised for the treating team

Every report ends with a prepared question list. The questions are written to be asked of the patient's own clinician — they are prompts for discussion, not recommendations.

  • Given that my arteries are not blocked, what is actually causing my symptoms, and is coronary microvascular dysfunction being considered?
  • Is invasive coronary function testing or stress perfusion imaging available at this centre, and would either change my treatment?
  • Do my early-morning rest episodes raise the possibility of vasospastic angina, and how is that usually assessed?
  • My LDL-cholesterol is above the target commonly used in diabetes with plaque — should treatment be intensified?
  • Is my current beta blocker the right choice if the mechanism is microvascular or vasospastic rather than obstructive?
  • What exercise level is safe for me while this is being investigated?

Structured report highlights

Extracts from the signed specialist report, reproduced in the same section order used in every MedReview 365 report.

What the angiogram did and did not exclude

  • Non-obstructive epicardial coronary arteries do not exclude myocardial ischaemia.
  • Coronary microvascular dysfunction and vasospastic angina are the entities most often considered when angina persists in this setting.

Assessment pathways described

  • Invasive coronary function testing and stress perfusion imaging were described as the investigations usually discussed, with the caveat that availability varies by centre.
  • The report did not direct a specific test; it set out what each would answer.

Risk-factor observation

  • Documented LDL-cholesterol remained above the target range commonly applied to patients with diabetes and established plaque.
  • Flagged as a point for the treating team, not as a prescribing instruction.

Safety-netting

  • Red-flag features prompting emergency assessment were listed, including chest pain at rest lasting more than 15 minutes or associated with breathlessness or syncope.

What happened next

The patient discussed microvascular assessment and lipid intensification with his cardiologist, who arranged further functional testing. Any change to medication was made by his own doctor.

This case study is anonymised, published with patient consent and altered where necessary to prevent identification. It describes how one written second opinion was prepared and discussed. It is not a treatment recommendation, not a diagnosis, and not an indication of any expected result in another patient. Always discuss your care with your own treating clinician, and seek emergency care for urgent or deteriorating symptoms.