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A. Introduction

A1. Pulmonary embolism

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Blood clot์ด ํ๋™๋งฅ์œผ๋กœ ๋“ค์–ด๊ฐ€์„œ ๋ฐœ์ƒํ•จ.ย 
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์ด๋Ÿฌํ•œ blood clot์€ ๋Œ€๋ถ€๋ถ„ DVT์— ์˜ํ•˜์—ฌ ๋ฐœ์ƒ

(1) ์œ„ํ—˜์ธ์ž

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15% ์—์„œ๋Š” ์œ„ํ—˜์ธ์ž ์—†๋‹ค.
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Immobility
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์ •๋งฅ์†์ƒ
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๊ณผ์‘๊ณ ์ƒํƒœ (์•”, ๊ณผ๊ฑฐ VTE, nephritic SD, ์—ผ์ฆ, ์ตœ๊ทผ 3๊ฐœ์›”๋‚ด ์ž„์‹ , ํ”ผ์ž„์•ฝ, ํŒจํ˜ˆ์ฆ, SLE, ํ˜ˆ์•ก์‘๊ณ ์งˆํ™˜)
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40์„ธ ๋ฏธ๋งŒ ํ™˜์ž์˜ 28% ์—์„œ ์œ„ํ—˜์ธ์ž ์—†๋‹ค.

A2. VTE (Venous Thromboembolism)

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PE (Pulmonary thromboembolism) + DVT (Deep vein thrombosis)
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์ž„์ƒ์ ์œผ๋กœ ์˜๋ฏธ๊ฐ€ ์žˆ๋Š” PE๋ฅผ ์œ ๋ฐœํ•˜๋Š” large thrombi ๋Š” ์ฃผ๋กœ popliteal, common femoral, superficial femoral, pelvic, axillary, jugular, and great vein . ์—์„œ ๋ฐœ์ƒํ•จ
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๊ฐ joint์— ๋”ฐ๋ผย ย  immobilization์‹œ VTE .ย  ๋ฐœ์ƒ ์œ„ํ—˜๋„๊ฐ€ ๋‹ค๋ฅด๋‹ค
: Elbow (์ œ์ผ ์œ„ํ—˜๋„ ์ ์Œ) < Should์‹œer < Ankle < Knee < Hip joint (์ œ์ผ ์œ„ํ—˜๋„ ํผ)

(1) Provoked (Secondary) VTE

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Recent surgery, Trauma, Any condition with immobilization, active cancer, Estrogen use, Pregnancy ๋“ฑ์˜ ์œ ๋ฐœ ์š”์ธ์ด ์กด์žฌํ•˜๋Š” VTE

(2) Unprovoked (Idiopathic) VTE

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ํŠน๋ณ„ํ•œ risk factor๊ฐ€ ์—†๋Š” VTE (Ex, Inherited thrombophillia)
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์ฆ์ƒ์ด ์—†๋Š” ๊ฒฝ์šฐ์—๋„ DVT์˜ ์•ฝ 1/3์—์„œ PE ๋™๋ฐ˜