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February 28, 2026Kardiologia Polska0 citationsOpen Access

Beyond coronary disease: Lobster-claw Doppler pattern unmasking mid-ventricular obstruction in apical hypertrophic cardiomyopathy with apical aneurysm

AŻAnna Żarek-StarzewskaMKMarcin KonopkaMMMagdalena Marczak

Key Result

A 69-year-old male with apical hypertrophic cardiomyopathy and an apical aneurysm exhibited a characteristic biphasic lobster-claw Doppler pattern indicating mid-ventricular systolic obstruction.

Study Design

Type

Case Report (n=1)

Multicenter

No

Structured PICO

P
Population
1 patient, 69-year-old male with paroxysmal atrial fibrillation, worsening exercise tolerance, and apical hypertrophic cardiomyopathy with apical aneurysm.
I
Intervention
Diagnostic imaging including transthoracic echocardiography, invasive coronary angiography, and cardiac magnetic resonance imaging.

The lobster-claw Doppler pattern is a useful hemodynamic sign for identifying mid-cavity systolic obstruction in patients with apical hypertrophic cardiomyopathy and apical aneurysm.

Limitations

  • Current literature lacks definitive data regarding the frequency of the lobster-claw Doppler pattern in hypertrophic cardiomyopathy.
  • There are no studies showing the lobster-claw Doppler pattern as an independent prognostic marker of poor prognosis in HCM.
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Cite This Study

Żarek-Starzewska et al. (2026) conducted a case report in Apical hypertrophic cardiomyopathy with apical aneurysm (n=1). Transthoracic echocardiography and cardiac magnetic resonance imaging was evaluated. A 69-year-old male with apical hypertrophic cardiomyopathy and an apical aneurysm exhibited a characteristic biphasic lobster-claw Doppler pattern indicating mid-ventricular systolic obstruction.

synapsesocial.com/papers/6a025a369cddff7633412a3fhttps://doi.org/10.33963/v.phj.111319
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