For healthcare professionals

Venous Thromboembolism (VTE)

Acronyms & Glossary

Term	Meaning
APS	Antiphospholipid syndrome
CTPA / V/Q	CT pulmonary angiography / ventilation–perfusion scan
CTEPD / CTEPH	Chronic thromboembolic pulmonary disease / pulmonary hypertension
DOAC	Direct oral anticoagulant
DVT / PE / VTE	Deep vein thrombosis / pulmonary embolism / venous thromboembolism
INR / IVC	International normalized ratio / inferior vena cava
LMWH / UFH	Low-molecular-weight heparin / unfractionated heparin
PERC / PESI	Pulmonary Embolism Rule-out Criteria / Pulmonary Embolism Severity Index
PERT / RV	Pulmonary embolism response team / right ventricle
PTS	Post-thrombotic syndrome
Unprovoked VTE	VTE without an identifiable provoking risk factor

Resources & References

Clinical tools and patient education

Pulmonary Embolism Severity Index (PESI)

VLN Procedure Playbook

VLN patient resources

VLN VTE Clinician Communication Tool

Guidelines and supporting sources

Creager MA, et al. Circulation. 2026;153(12):e977-e1051.
doi:10.1161/CIR.0000000000001415

Lim W, et al. Blood Adv. 2018;2(22):3226-3256.
doi:10.1182/bloodadvances.2018024828

Ortel TL, et al. Blood Adv. 2020;4(19):4693-4738.
doi:10.1182/bloodadvances.2020001830

Stevens SM, et al. Chest. 2024;166(2):388-404.
doi:10.1016/j.chest.2024.03.003

Kakkos SK, et al. Eur J Vasc Endovasc Surg. 2021;61(1):9-82.
doi:10.1016/j.ejvs.2020.09.023

Castellucci LA, et al. N Engl J Med. 2026;394(11):1051-1060.
doi:10.1056/NEJMoa2510703

Lyman GH, et al. Blood Adv. 2021;5(4):927-974.
doi:10.1182/bloodadvances.2020003442

Mahé I, et al. N Engl J Med. 2025;392(14):1363-1373.
doi:10.1056/NEJMoa2416112

Bates SM, et al. Blood Adv. 2018;2(22):3317-3359.
doi:10.1182/bloodadvances.2018024802

Middeldorp S, et al. Blood Adv. 2023;7(22):7101-7138.
doi:10.1182/bloodadvances.2023010177

Schünemann HJ, et al. Blood Adv. 2018;2(22):3198-3225.
doi:10.1182/bloodadvances.2018022954

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