But then, as your eyes adjust to the light, you start to piece together your surroundings.

不過當你的眼睛開始適應光時，你會開始拼湊你的周遭事物。

The moving blobs above you, you realize, are masked faces.

你會發現在你上面移動的那些不明物體，是戴著面具的臉。

And they've got their hands inside your body.

然後他們的手在你的身體裡。

Okay, who- up?

好的，誰搞砸了？

You can't run, you can't scream.

你不能跑，你也不能叫。

Luckily, you can't feel.

幸運地，你沒有感覺。

But still, you have to watch.

但是，你還是得看。

This is "What If".

這是「 What If 」。

And here's what happens if you wake up during surgery.

然後這是如果你在手術過程中醒來會發生什麼事。

The odds of you waking up during surgery are about 1 in 19,000.

你在手術中醒來的機率是 1 萬 9 千分之一。

That might not sound like a lot but, considering that doctors perform over 130,000 inpatient surgeries daily in the U.S. alone, it's close to 7 people every day.

這聽起來可能不是很多，但考慮到在美國的醫生們一天需要為 13 萬病患動手術，一天會有接近 7 個人會從手術中醒來。

When it does happen, it's usually painless, and you're usually back under in 5 minutes.

當它發生時，通常不會痛，而且五分鐘後你就又會回到麻醉狀態了。

But that's not to say there haven't been some horror stories.

但這不代表從來沒有恐怖的故事發生。

In a study of people who've experienced anesthesia awareness, 18% reported feeling pain, and some even developed post traumatic symptoms like increased stress, nightmares, and flashbacks.

根據對於有麻醉清醒經驗的人的研究顯示，百分之 18 的人回報有疼痛的感覺，有一些人甚至有創傷後壓力症候群的症狀，像是：壓力增加、做惡夢和閃回。

So how can a routine operation go so terribly wrong, and what happens when it does?

所以一個例行性的手術怎麼會錯得這麼離譜，如果發生的時候會怎麼樣呢？

Before any surgery, an anesthesiologist will review your medical history, and ask you about your habits and your lifestyle.

在任何手術前，麻醉師會審查你的醫療紀錄，並且問你有關於你的習慣和你的生活型態。

Everyone reacts differently to anesthetics, so, it's the anesthesiologist's job to figure out a dose that will keep you unconscious during surgery, without inhibiting any of your critical life functions.

每個人對麻醉藥的反應不同，所以麻醉師的工作就是找到正確的劑量，讓你在手術時能毫無意識但又不會阻止你的重要器官的運作。

As you're counting down, getting heavier, getting sleepier, getting...

當你開始倒數，眼皮越來越重、越來越想睡、越來越...

Up soon?

我醒了？

What? Is it morning already?

什麼？早上了嗎？

Where am I?

我在哪裡？

Anesthesia alertness can play out in different ways.

麻醉清醒有幾種發生的方式。

It usually involves complications with the sedative, the paralytic, or both.

通常跟鎮靜劑或麻痺藥劑的併發症有關，或有可能是兩個同時出狀況。

If the paralytic wears off, but the sedative doesn't, you'll remain unconscious, but your body might still move.

如果麻痺藥劑失效了，但鎮靜劑還沒，那你會保持無意識狀態，但你的身體還是可以動。

Anesthetists are normally quick to pick up on this, and will immediately fix the problem by adding more paralytic agent.

麻醉師通常很快就可以發現異狀，並會馬上以增加麻醉藥劑的方式解決問題。

Then there's the problem of both the sedative and the paralytic wearing off.

再來就是當鎮靜劑或麻痺藥劑同時失效的問題。

This is also easy to catch, because the patient might try to speak or sit up.

這也很簡單就能發現，因為病人可能會試著講話或是坐起來。

But again, doctors will have you back under in less than five minutes.

一樣的，醫生通常會在五分鐘內回復到麻醉狀態。

Perhaps the most traumatic outcome is if the sedative wears off, but the paralytic doesn't.

或許最令人恐懼的是當鎮靜劑失效，但麻痺藥劑還沒有時。

In this scenario, you can wake up during surgery, and you might even feel it.

在這個狀態，你可能會在手術中醒來，而且你可能會有感覺。

But with the paralytic agent working as it's supposed to, you can't communicate that you're awake.

但如果麻痺藥劑還有它的作用的話，你沒辦法表達你已經醒來了。

While that scenario is particularly rare, it's happened enough times to inspire one too many movie ideas.

雖然這個狀況非常顯見，可是它發生的次數足夠啟發出有這種狀況的電影了。

But, if you're scared it could happen to you, there are ways to further reduce your risk of anesthesia alertness.

但如果你會怕它發生在你身上的話，有方法可以降低它發生在你身上的機率。

It's always important have up-to-date medical records, and to follow your doctor's instructions carefully before surgery.

擁有最近期的醫療紀錄是很重要的，並要仔細遵守術前醫生的指示。

For bonus points, you can cut back on alcohol and tobacco, since, heavy drinking and smoking can affect how your body responds to anesthetic drugs.

想要更加確保安全，你可以戒酒和戒菸，因為過度抽煙和喝酒會影響你的身體對麻醉藥的反應。

As long as you keep making healthy choices, and don't let the movies scare you too much, then your next surgery should go smoothly.

只要你持續做健康的選擇，然後不要讓電影嚇到你，你的下一個手術就會很順利。

When you wake up at the right time, you can thank your doctor.

當你在正確的時間醒來，你可以感謝你的醫生。

And in your downtime, you can thank, "what if."

當你有空的時候，你可以想想：「如果...」。