Cardiac Codex

Hypoattenuated Leaflet Thickening (HALT)

A Structural Interventions & Imaging term on the RCIS exam blueprint, defined for cath lab and EP clinicians.

A CT finding of subclinical valve thrombosis after TAVR, presenting as restricted leaflet mobility and increased transvalvular gradients; one of three major TAVR complication categories alongside vascular complications and stroke.

Domain: Structural Interventions & Imaging · Blueprint: RCIS exam guide

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Cardiac Codex is an independent study tool published by MdoubleA LLC, not affiliated with or endorsed by CCI or any certifying body. This glossary entry is exam-preparation information, not medical advice or a substitute for clinical judgment. Always verify current clinical practice against primary sources and institutional protocol.