Clinical Usefulness of Passive Leg Lifting During Right Heart Catheterization for Diagnosing Exercise-Induced Pulmonary Hypertension　― A Pilot Study ―

Toru Suzuki; Noriaki Iwahashi; Takeru Abe; Naohiro Komura; Maria Abe; Masaaki Konishi; Fumiyuki Otsuka; Teruyasu Sugano; Tomoaki Ishigami; Kiyoshi Hibi

doi:10.1253/circj.CJ-25-0515

Research Letters

Clinical Usefulness of Passive Leg Lifting During Right Heart Catheterization for Diagnosing Exercise-Induced Pulmonary Hypertension　― A Pilot Study ―

Toru Suzuki, Noriaki Iwahashi , Takeru Abe, Naohiro Komura, Maria Abe, Masaaki Konishi, Fumiyuki Otsuka, Teruyasu Sugano, Tomoaki Ishigami, Kiyoshi Hibi

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Keywords: Cardiopulmonary exercise testing, Catheterization, Exercise, Pulmonary arterial hypertension (PAH)

JOURNAL OPEN ACCESS FULL-TEXT HTML

2026 Volume 90 Issue 2 Pages 228-231

DOI https://doi.org/10.1253/circj.CJ-25-0515

Editorial (90-2 pp. 232-233)

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Abstract

Background: Passive leg lifting (PLL) may serve as a simple alternative to simulate exercise stress.

Methods and Results: We evaluated 33 patients with PH who underwent PLL-RHC and exercise right heart catheterization (RHC); 25 patients were classified as having PLL-induced PH (LIPH), demonstrating significant increases in mean pulmonary arterial pressure (mPAP) and mPAP–cardiac output slopes. Strong correlations were observed between PLL-RHC and exercise RHC measurements.

Conclusions: PLL-RHC may represent a simple method for detecting EIPH.

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