Respirația este normală.

A natural pronunciation is roughly:

reh-spee-rah-TSYA EH-steh nor-MAH-luh

A few helpful details:

• ț sounds like ts in cats
• ă is a short central vowel, something like the a in sofa
• ția in respirația is pronounced together, approximately tsya

The stress is usually:

• respiRAția
• ESte
• norMAlă

Respirația means the breathing or the respiration.

The basic noun is respirație = breathing / respiration.
When Romanian adds the definite article the, it is usually attached to the end of the noun instead of being a separate word.

So:

• respirație = breathing / respiration
• respirația = the breathing / the respiration

This is very common in Romanian.

Este means is. It is the 3rd person singular of the verb a fi = to be.

So the structure is:

• Respirația = the breathing
• este = is
• normală = normal

Romanian usually keeps este in this kind of sentence, especially in standard, careful speech.

Yes. E is a very common shorter form of este.

So both are correct:

• Respirația este normală — a bit more formal or neutral
• Respirația e normală — very common in everyday speech

Both mean the same thing.

Because respirația is a feminine singular noun, and the adjective has to agree with it.

Romanian adjectives change form to match the noun’s gender and number.

Here:

• respirația = feminine singular
• therefore: normală = feminine singular form of normal

Compare:

• ritmul este normal = the rhythm is normal
  (ritmul is masculine singular)
• respirația este normală = the breathing is normal
  (respirația is feminine singular)

One clue is its ending. Many Romanian nouns ending in -ie are feminine, and respirație is one of them.

You can also see it from agreement:

• the definite form is respirația
• the adjective is normală, the feminine form

So even if you were unsure at first, the sentence itself shows you that the noun is feminine.

The normal, neutral order is:

Respirația este normală.

That is the most natural version for most situations.

Romanian word order is somewhat flexible, but changing it usually adds emphasis or sounds more marked. For a learner, it is best to stick with the standard order:

subject + verb + adjective

The difference is indefinite vs. definite:

• respirație = breathing / a respiration
• respirația = the breathing / the respiration

Romanian often expresses the by adding it to the end of the noun.

So:

• O respirație normală = a normal breath / a normal respiration
• Respirația este normală = the breathing is normal

Here it is in the nominative, because it is the subject of the sentence.

In:

Respirația este normală

the thing being talked about is respirația, so it functions as the subject:
The breathing is normal.

This sentence contains two important Romanian diacritics:

• ț in respirația
  This is pronounced ts
• ă in normală
  This is a short central vowel, a very common Romanian sound

These marks are important. Without them, the spelling is incomplete or non-standard. In correct Romanian, you should write:

• respirația, not respiratia
• normală, not normala

Yes. It is completely natural, especially in a medical or health-related context.

It could be used by a doctor, nurse, or first-aid worker to say that someone’s breathing is normal.

It is a straightforward, standard Romanian sentence.