Introduction:

Low birth weight is considered to be any newborn baby weighing less than 2500g at the time of delivery, whatever the cause and regardless of the length of gestation.

Objectives:

to identify maternal risk factors associated with low birth weight.

Methods:

a descriptive, prospective, longitudinal study was conducted on 31 mothers whose product of conception was low birth weight in San Juan y Martinez municipality during the period 2018-2019. A survey was applied to identify the main risk factors that contributed to this incidence.

Results:

the most representative age group was 21-35 with 74 %, there was an inadequate weight gain for the 42 % of them, there was a predominance of nulliparity for 64% of adolescents, pregnancy-related diseases were present in 88 %, and pre-existing conditions in the 84% of mothers during pregnancy; 82% did not plan the pregnancy.

Conclusions:

the most influential risk factors were inadequate weight gain during pregnancy with adequate initial weight, nulliparity, pregnancy-related diseases such as vaginal infections, high blood pressure, anemia during pregnancy, preterm.

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