La pressione è un po’ alta oggi, ma domani la controllo di nuovo.

Italian often uses the definite article more than English does. So la pressione is natural where English would often just say blood pressure or the blood pressure, depending on context.

In this sentence, la pressione most likely means blood pressure. Italian commonly says simply la pressione when the context makes that clear.

È with an accent is the verb is from essere.

• è = is
• e = and

The accent is important because it distinguishes the verb from the conjunction.

Un po’ means a little, a bit, or somewhat.

So:

• un po’ alta = a little high / a bit high

The apostrophe in po’ is there because it is a shortened form of poco.

Because pressione is a feminine singular noun, the adjective must agree with it.

• la pressione = feminine singular
• so the adjective is alta = feminine singular form of alto

This is standard adjective agreement in Italian.

Italian usually does not need a separate subject pronoun like English it in this kind of sentence.

English says:

• It is a little high today

Italian simply says:

• È un po’ alta oggi

The subject is understood from the context: la pressione.

Here la is a direct object pronoun meaning it, referring back to la pressione.

• controllo = I check
• la controllo = I check it

Since pressione is feminine singular, the pronoun is la.

In Italian, unstressed object pronouns usually come before the conjugated verb.

So:

• controllo la pressione = I check the blood pressure
• la controllo = I check it

This word order is very common in Italian.

Italian often uses the present tense to talk about the near future when a time expression makes the meaning clear.

Here:

• domani = tomorrow

So domani la controllo di nuovo naturally means I’ll check it again tomorrow, even though controllo is present tense in form.

You could also say domani la controllerò di nuovo, which is more explicitly future, but the present is very common and natural.

Italian usually leaves out subject pronouns when the verb ending already shows who the subject is.

• controllo = I check
• the -o ending tells you the subject is I

So io is unnecessary unless you want emphasis or contrast.

For example:

• Domani la controllo di nuovo. = neutral
• Domani io la controllo di nuovo. = more emphatic, like I’ll check it again tomorrow

Di nuovo means again.

So:

• la controllo di nuovo = I check it again

In many contexts, di nuovo and ancora can both mean again, though di nuovo often clearly emphasizes repeating the action.

Yes. That is also correct.

Compare:

• Domani la controllo di nuovo. = Tomorrow I’ll check it again.
• Domani controllo di nuovo la pressione. = Tomorrow I’ll check the blood pressure again.

The original sentence uses la to avoid repeating la pressione, which sounds natural and efficient.

Here controllare means to check, to monitor, or to examine, not usually to control in the English sense of to dominate/manage completely.

So in this sentence:

• controllare la pressione = to check/monitor blood pressure

This is a very common meaning of controllare in Italian.