Learn Russian: У пациента нет жалоб, значит, лечение помогает. - The patient has no complaints, so the treatment is helping.

In this sentence, значит acts as an advanced discourse marker of consequence, functioning like 'so,' 'therefore,' or 'consequently' in English. While it comes from the verb значить (to mean), it is used here to show that the second clause (the treatment is helping) is a direct logical conclusion drawn from the first clause (the patient has no complaints).

Why is значит surrounded by commas?

When значит is used as an introductory word to express a logical conclusion, Russian punctuation rules require it to be isolated with commas. The comma before it separates the two main clauses, and the comma after it sets off the discourse marker, similar to how we write 'therefore,' in English.

Why is the word for complaints written as жалоб instead of жалобы?

The word нет (there is no) forces the following noun into the genitive case. Because we are talking about complaints in general, it takes the genitive plural. The nominative singular is жалоба, a feminine noun ending in -а. To form the genitive plural, these nouns drop the final vowel, leaving the zero-ending form жалоб.

Why use the imperfective verb помогает instead of the perfective поможет?