When you go to the hospital and they inject you with an anaesthetic, you fall asleep. What is the state when you fall asleep called?
Example sentence:
I was {asleep due to anaesthetic} during the operation
When you go to the hospital and they inject you with an anaesthetic, you fall asleep. What is the state when you fall asleep called?
Example sentence:
I was {asleep due to anaesthetic} during the operation
What you are looking for is
I was under general anaesthetic during the operation.
‘Anaesthetised’ is not explicit about the anaesthesia being general rather than local, although that would be the usual assumption. With local, one might say ‘I was numbed up’ or ‘they numbed my arm’ or ‘they anaesthetised my leg’ or ‘they gave me an epidural’.
‘Sedated’ is wrong if I’ve understood what you’re asking about. Sedation is less extreme than general anaesthetic. Sedation is induced sleep, whereas general anaesthesia shuts your brain down on a deeper level. You can usually be woken from sedation by shaking or shouting (it depends on how much they give you), although you will fall straight back to sleep and forget the interaction. With sedation, you need local anaesthetic too, or else the pain of cutting is likely to wake you. Milder forms of sedation (e.g. taking a benzodiazepine for anxiety) won’t even put you to sleep.
The straight answer would be anesthetized/anaesthetized/anaesthetised because it is the verb form of anaesthesia (the very word you used in your question). It is acknowledged that another answer already mentions "under anaesthesia" (which is not bad but is not a single word to fit the blank in the example sentence).
I was anesthetized/anaesthetized/anaesthetised during the operation
MW (medical dictionary):
anesthetize
transitive verb
variants: or chiefly British anaesthetize also anaesthetiseanesthetized (or chiefly British anesthetized also anesthetised; anesthetizing or chiefly British anesthetizing also anesthetising) :
to subject to anesthesia
Yet another (probably more common) word is sedated.
I was sedated during the operation
MW:
sedate
transitive verb
: to dose with sedativesThe doctor sedated the patient heavily.
Another one: drugged to mean (rendered) unconscious due to drug(s).
I was drugged during the operation
M-W:
drug
drugged; drugging
transitive verb
1 : to affect with a drug (see drug); especially : to stupefy by a narcotic druglooks like he's been drugged
Usage examples of drugged which match the example sentence:
https://www.google.com/search?q=%22drugged+during+the+operation%22
As a native UK speaker, I'm not aware of a good single-word in general use which denotes that you were both unconscious and that this was due to anaesthetic.
Technically, general anaesthesia is a medically induced coma, so you could use "comatose", however, in common usage this is used with weakened meaning e.g. of sleepy/drunk, so you might be misunderstood. Also, most people would consider a 'coma' to be more serious to 'general anaesthesia', so saying "I was in a medically-induced coma" is likely to make people feel it was very serious and for a prolonged time.
"Unconscious" would probably ok; though technically a state of general anaesthesia is more than just unconsciousness (https://en.wikipedia.org/wiki/General_anaesthesia), this would likely be understood correctly. In the context of an operation, it would be clear this was medically induced.
Anaesthetised means that you were under the effects of anaesthetic, but this does not necessarily denote that you were unconscious. Context might make it clear, but with an increasing number of operations done under local anaesthetic, I wouldn't rely on it. e.g. "The dentist anaesthetised me and took my tooth out" would almost certainly be understood to mean a local anaesthetic.
Sedated would generally imply that you were not fully unconscious. (e.g. https://en.wikipedia.org/wiki/General_anaesthetic mentions "sedation and/or unconsciousness").
The usual term used in the UK for being unconscious due to anaesthetic is "under general anaesthetic". However, that's not one-word. This is sometimes simply called "a general", so you could say "I had a general for my appendectomy".
Less formally, "out" can be used to denote unconsciousness, and the context of the operation would imply this was due to anaesthetic. So "I was out during the operation" would be clear that you were under general anaesthetic. However, it's somewhat informal.
The laymen term(s) in American English are:
Out
I was out during the operation
Knocked-out
I was Knocked-out during the operation
Aleternately
They knocked me out for the operation
M-W:
adverb
5.b in or into an insensible or unconscious state she was out cold)
The word you mentioned, "anesthesia", can actually be used to describe the state. From wikipedia:
In the practice of medicine (especially surgery and dentistry), anesthesia or anaesthesia (from greek "without sensation") is a state of temporary induced loss of sensation or awareness.
You can also use the word "narcosis". From Collins:
unconsciousness induced by narcotics or general anaesthetics
Your example sentence could then be:
I was under anesthesia during the operation
or
I was in a state of narcosis during the operation
You may not be interested in this, but in medical terms general anaesthesia is an induced coma.
General anaesthesia or general anesthesia (see spelling differences) is a medically induced coma with loss of protective reflexes, resulting from the administration of one or more general anaesthetic agents.
Wikipedia article
So technically you're comatose. You may or may not like this use as coma probably more often than not means unconsciousness from physical injury.
What is the state in which a person is put to sleep using anaesthesia called?
The state is anaesthesia; you're put into that state by an anaesthetic.
Medical professionals do not have a single word to describe the state you are referring to either. In the operating theatre administering a drug to render someone unconscious is referred to as the 'anaesthetic.' However the same drugs being used for the same purpose of rendering someone unconscious in the intensive care unit is referred to as the 'sedation.' Therefore in the operating theatre you would be anaesthetised, in the ICU you would be sedated.
As an alternative:
I was in a state of induced sleep during the operation.
Not better than some of the other answers but thought of a different answer.
It may not be directly relevant, but the state just before you fall asleep is called the "hypnagogic state" or Hypnagogia. As per Wikipedia:
Hypnagogia, ... is the experience of the transitional state from wakefulness to sleep: