跟讀練習: Escharotomy - Burn Care Series - 通過影片學習英語口語
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Escarotomy The
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skin of a deep bone can become thickened, dry and tight.
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there is often swelling underneath the burn that worsens over time.
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If the burn encircles a limb or the torso or neck,
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it can act like a tourniquet and reduce circulation or restrict breathing.
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In these cases, an escharotomy needs to be done.
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This procedure cuts through the tight skin to release the constriction.
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This will restore circulation in the limbs or improve breathing in the chest.
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This video shows how to recognize the need for escarotomy and how to do it.
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There are two signs that indicate the need for escarotomy.
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First, the burn extends all the way around a limb, the torso, or the neck.
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In this patient, the white appearing skin is a full thickness burn encircling both arms.
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Second, circulation is reduced.
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This patient's hands are cold,
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his pulse is weak, Capillary refill is delayed,
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taking longer than three seconds for a fingernail to regain its pink colour, and he has pain in his arms.
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If the burn is on the torso, check for difficulty breathing.
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This man has burns encircling his arms and signs of reduced circulation.
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He needs an emergency escharotomy.
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Escharotomy is often done at the bedside with sedation, local anesthesia and simple instruments.
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Or if you have the facilities and the escharotomy will be extensive, it can be done under general anesthesia.
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Create a sterile field, clean the limbs with antiseptic, and spread sterile drapes beneath them.
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Next, mark where you will make the incisions.
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Refer to accurate escarotomy guidelines for where to cut to avoid underlying nerves and blood vessels.
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Mark a line on the inside of the arm and a notch to avoid the ulnar nerve.
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Mark a line on the outside of the arm.
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To avoid cutting into the median nerve, keep the arm straight.
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If the arm is flexed, it's easy to cut in the wrong place.
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If the medial or innermost line is drawn down the side of the bent arm, when the arm is straightened,
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the line is now in the middle of the arm, you will risk cutting the median nerve.
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The patient's limbs must be in the anatomical position with the arms straight and palms facing forward.
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Now the lines are drawn correctly down the lateral part of the arm, avoiding the median nerve.
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On the leg, mark an inside line and an outside line.
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To avoid the common perineal nerve of the lateral lower leg, mark in front of the knob of the fibula.
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The chest will need excisions to allow expansion in all directions.
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On the hand, mark lines for three incisions between the metacarpal bones from the knuckles to the wrist.
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If you are giving local anesthesia, inject along the marks you have drawn on the skin.
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Here's how to do an escarotomy.
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Use a scalpel or an electric coterie tool.
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Start and end your incision within an area of normal skin or superficial burn.
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Make your cuts right through the depth of the burned tissue into the fat layer below
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so that the constricting tissue springs apart.
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Once you have cut deep enough, the sides will spring apart.
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This can be a few centimeters wide.
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The limb should immediately feel softer and the pulse should become stronger.
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Expect some bleeding with the incisions.
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Use direct pressure and pack some gauze in the incision.
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Put sterile Vaseline gauze over the burn.
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Follow with an absorbent layer of cotton dressing and a stretchy wrap.
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Elevate the limbs above the level of the heart and continue to monitor for signs that further escarotomy may be needed.
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Remember, an escharotomy is needed if a burn encircles the limb, the torso, or the neck,
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and there is reduced circulation.
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Cut through to the fat layer along the lines that avoid major nerves and vessels.
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Thank you.
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本課的詞彙與口語要點
這節口語課以影片“Escharotomy - Burn Care Series”為素材。 影片中反覆出現的詞有：arm, burn, limb, nerve, mark。 這段影片共有 54 個句子、644 個單詞可供跟讀。 講話部分時長為 7:19。 說話人語速較慢，每分鐘約 88 個詞，你有足夠的時間模仿每一個音。 只有 76% 的單詞屬於英語最常用的 3,000 詞，詞彙難度較高。
影片中的重點詞彙
影片中 15 個值得學習的單詞，附發音和釋義：
| 單詞 | 發音 | 釋義 |
|---|---|---|
| limb 名詞 | /lɪm/ | 肢, 手腳 /手腳 |
| nerve 名詞 | /nɝv/ | 神經 /神經 |
| layer 名詞 | /ˈleɪ̯ɚ/ | 層 /層 |
| breathe 動詞 | /bɹiːð/ | 呼吸, 吸 |
| median 名詞 | /ˈmiː.di.ən/ | 中線 /中線 |
| bone 名詞 | /boʊn/ | гўдў, гўдўзы |
| tissue 名詞 | /ˈtɪʃ.(j)u/ | 紙巾 |
| vessel 名詞 | /ˈvɛsəl/ | 船隻 /船隻, 船 |
| pulse 名詞 | /pʌls/ | 脈 /脈, 脈搏 /脈搏 |
| refer 動詞 | /ɹɪˈfɜː/ | 談到 /談到 |
| procedure 名詞 | /pɹəˈsiː.d͡ʒə/ | 做法, 方法 |
| delay 名詞 | /dɪˈleɪ̯/ | 遲延 /遲延, 延遲 /延遲 |
| monitor 名詞 | /ˈmɑ.nɪ.tɚ/ | 顯示器 /顯示器 |
| cotton 名詞 | /ˈkɑt.n̩/ | 棉花, 棉 |
| indicate 動詞 | /ˈɪndɪˌkeɪt/ | 表明, 表示 |
影片中出現的短語動詞
| 單詞 | 釋義 |
|---|---|
| draw down 動詞 | 放下, 降下 |
影片中的語法
說話人最常用的結構，並附上影片中的原話：
| 結構 | 影片中的用法 |
|---|---|
| 被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的 | be done · is reduced · is delayed |
| 現在完成時 have/has + 過去分詞 — 過去發生但與現在仍有關聯的事 | have drawn · have cut |
需要注意的發音
- “th” 音: breathe /bɹiːð/, beneath /bɪˈniːθ/, underneath /ˌʌndɚˈniθ/, thickness /ˈθɪknəs/, anesthesia /ˌæn.əsˈθi.ʒə/
- “sh” 和 “zh” 音: circulation /ˌsɝkjʊˈleɪʃən/, tissue /ˈtɪʃ.(j)u/, superficial /ˌsupɚˈfɪʃəl/, incision /ɪnˈsɪʒən/, anesthesia /ˌæn.əsˈθi.ʒə/
- 長單詞——注意重音位置: circulation /ˌsɝkjʊˈleɪʃən/, difficulty /ˈdɪfɪkəlti/, superficial /ˌsupɚˈfɪʃəl/, anesthesia /ˌæn.əsˈθi.ʒə/, anatomical /æ.nəˈtɑ.mɪ.kəl/
中文母語者容易讀錯的音：
- /v/ — 不要讀成 /w/，上齒輕觸下唇: nerve /nɝv/, vessel /ˈvɛsəl/, elevate /ˈɛləveɪt/
- 詞尾子音 — 要讀清楚，後面不要加母音: nerve /nɝv/, pulse /pʌls/, indicate /ˈɪndɪˌkeɪt/, extend /ɛkˈstɛnd/, instrument /ˈɪnstɹəmənt/
- /r/ 和 /l/ 的區別: lateral /ˈlætəɹəl/, correctly /kəˈɹɛk(t).li/, sterile /ˈstɛɹəl/, perineal /ˌpɛɹɪˈniəl/, refill /ˈɹiː.fɪl/
如何用這段影片練習
- 先完整聽一遍影片，不要開口，記下不認識的單詞。
- 用正常速度逐句跟讀，每句重複到你的節奏與說話人一致為止。
- 錄下自己的聲音並與原聲對比，特別注意 limb, nerve, layer 這類單詞。
什麼是跟讀法？
跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。