Assessment of Diastolic Function in Hypertrophic Cardiomyopathy by Computed Tomography–Derived Analysis of Left Ventricular Filling

Itai Ghersin, Eduard Ghersin, Sobhi Abadi, Jennifer E. Runco Therrien, Tanyanan Tanawuttiwat, Doron Aronson, Jonathan Lessick

Research output: Contribution to journalArticle

Abstract

OBJECTIVES: Hypertrophic cardiomyopathy (HCM) is characterized by diastolic dysfunction, which is difficult to assess by noninvasive methods. We hypothesized that measurement of simultaneous left ventricular (LV) and left atrial (LA) volume changes by cardiac computed tomography would be useful in the assessment of diastolic function in HCM. METHODS: We studied 21 patients with HCM and 21 age-matched controls. The LA and LV volumes were calculated and early and late diastolic volume changes derived. RESULTS: The HCM patients had significantly larger LA volumes and reduced LA total emptying fraction (30 ± 7% vs 42 ± 6%; P < 0.0001). Conduit volume was increased (30 ± 6 vs 22 ± 4 mL/m; P < 0.0001) and contributed a significantly higher proportion of total LV diastolic filling, suggesting that passive filling of the LV compensates for LA dysfunction, but at the expense of increased pulmonary filling pressure. CONCLUSIONS: This study suggests that simultaneous depiction of computed tomography–derived LV and LA volume changes can characterize diastolic dysfunction in HCM.

Original languageEnglish (US)
JournalJournal of Computer Assisted Tomography
DOIs
StateAccepted/In press - Oct 29 2016

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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