Is coronary computed tomography angiography (CTA) indicated before a Hyrox race for a 34-year-old woman with no medical history and no family history of premature cardiovascular disease?

No, coronary CT angiography is NOT indicated for this 34-year-old woman before a Hyrox race.

For a 34-year-old asymptomatic woman without medical history or family history of premature cardiovascular disease, coronary CTA is explicitly not recommended and would be considered inappropriate screening.

Rationale Based on Current Guidelines

Age-Based Risk Assessment

The most recent 2025 German consensus guideline 1 specifically recommends using validated cardiovascular risk scores (such as SCORE2) only from age 35 years and older for sports preparticipation evaluation. At 34 years old, this woman falls below even this threshold for formal risk stratification.

Screening Recommendations for Asymptomatic Low-Risk Individuals

Multiple high-quality guidelines converge on this point:

• The 2019 ESC guidelines 2 provide a Class III recommendation (NOT recommended) stating: "In low-risk non-diabetic asymptomatic adults, coronary CTA or functional imaging for ischaemia are not indicated for further diagnostic assessment."

• The 2021 AHA/ACC guidelines 3 similarly do not support advanced imaging in low-risk asymptomatic individuals without concerning findings on initial evaluation.

• The 2025 AHA/ACC statement on competitive athletes 4 emphasizes that cardiac imaging has "insufficient data to suggest incremental value for use in the primary screening of asymptomatic competitive athletes."

What IS Recommended

For this 34-year-old woman, the appropriate preparticipation evaluation consists of:

1. Medical and family history focusing on:

   • Cardiac symptoms (chest pain, syncope, palpitations, unexplained dyspnea)
   • Family history of premature sudden cardiac death or inherited cardiac conditions
   • Previous diagnoses or cardiac interventions 1, 4

2. Physical examination including:

   • Cardiac auscultation (both supine and standing positions to detect dynamic murmurs)
   • Blood pressure measurement
   • Assessment for Marfan syndrome stigmata 5, 6

3. Resting 12-lead ECG - This is reasonable as it improves detection of underlying cardiac conditions in asymptomatic competitive athletes compared with history and physical examination alone 4, though not universally mandated for all recreational athletes.

Pre-Test Probability Context

The 2019 ESC data 2 demonstrates that for women aged 30-39 years with non-anginal symptoms or no symptoms, the pre-test probability of obstructive CAD is only 1-3%. This extremely low probability makes advanced imaging inappropriate and potentially harmful due to:

• Unnecessary radiation exposure
• High false-positive rates leading to downstream invasive procedures
• Significant cost without proven benefit
• Potential for incidental findings requiring further workup

When Would Imaging Be Considered?

Coronary CTA would only become appropriate if:

• She develops cardiac symptoms (exertional chest pain, syncope, palpitations)
• Abnormal findings emerge on history, physical exam, or ECG
• She reaches age ≥35 years AND has high cardiovascular risk (SCORE2 >10%) 1
• She has diabetes or strong family history of premature CAD (before age 55 in men, 65 in women) 2

Common Pitfall to Avoid

Do not conflate the intensity of Hyrox competition with a need for advanced cardiac screening in young, healthy individuals. The 2007 AHA statement 5 clarifies that for athletes under 35-40 years, the focus is on detecting inherited/congenital cardiac abnormalities through history and physical examination, NOT screening for atherosclerotic disease with imaging. Research evidence 7, 8 confirms that using CCTA as a screening tool in asymptomatic low-risk populations is not recommended despite its technical capabilities.

The appropriate strategy is a focused history, physical examination, and consideration of a resting ECG—not coronary CTA.