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Low Birth Weight (LBW) refers to infants born with a birth weight of less than 2,500 grams and remains an important issue in neonatal health due to its association with increased neonatal morbidity and mortality. To analyze the determinants of LBW based on primary studies published from 2021 to 2026. A literature review was conducted using the PRISMA approach. Article searches were performed through PubMed, Google Scholar, Scopus, ScienceDirect, and ProQuest using the keywords low birth weight, determinant factors, risk factors, BBLR, and faktor risiko with Boolean operators AND/OR. The inclusion criteria were primary studies, full-text availability, publication in Indonesian or English, and publication years from 2021 to 2026. A total of 20 articles were included, consisting of 15 international articles and 5 national sources. The review showed that LBW is influenced by interrelated maternal, nutritional, obstetric, and sociodemographic factors during pregnancy. The most dominant factors included multiple pregnancy with an adjusted OR of 21.74, maternal food insecurity with an AOR of 6.85, maternal hemoglobin level <11 g/dL with an AOR of 5.21, lack of iron-folic acid supplementation with an AOR of 4.17, maternal age ≤20 years with an AOR of 3.42, pregnancy interval <1 year with an adjusted OR of 2.92, missed antenatal care visits with an AOR of 2.74, smoking during pregnancy with an OR of 2.18, and maternal hypertension with an AOR of 1.94. LBW is influenced by multiple interrelated factors; therefore, efforts to reduce its incidence should focus on evidence-based interventions, particularly through optimizing antenatal care services, improving maternal nutritional status, and early detection of pregnancy.

Teenage pregnancy remains a reproductive health issue in Indonesia, including in Batam City. According to data from the Batam City Health Office in 2024, there were 18 cases of teenage pregnancy (0.06%) with the Lubuk Baja Health Center being one of the highest areas. Pregnant teenagers are at high risk of complications such as anemia, malnutrition, and low birth weight (LBW), which contribute to high rates of maternal and infant morbidity. This study used a descriptive method with a case study approach on Ny. S, an 18-year-old teenager with a pregnancy in the Lubuk Baja Health Center area of Batam City in 2025. Data collection was conducted through interviews, observations, physical examinations, and SOAP documentation following the 7-step Varney obstetric management. The findings revealed that Ny. S experienced mild complaints such as nausea, reduced appetite, and anxiety about her pregnancy. After three visits, the mother's complaints decreased, appetite improved, anxiety decreased, and nutritional status was within normal limits. Comprehensive midwifery care with a biopsychosocial approach was proven effective in improving both the physical and mental health of pregnant teenagers and preventing pregnancy complications.

Data from the 2020 LFSP (Long Form Population Census) recorded a maternal mortality ratio of 189 per 100,000 live births, while the infant mortality rate was recorded at 16.85 per 1,000 live births. The causes of maternal mortality were hemorrhage, preeclampsia/eclampsia, infection, prolonged labor, and miscarriage. Meanwhile, the majority of infant deaths were due to low birth weight, asphyxia, and infection at birth. Stunting remains a particular concern in Tegal City. Various measures have been taken, and the stunting rate has decreased to around 13.8% according to data from early 2025. This PKM is expected to increase public knowledge on caring for pregnant women, women in labor, postpartum women, and newborns, as well as preventing stunting in children, thereby reducing maternal and infant mortality rates. The methods used in this activity include health education and outreach with a promotive and preventive approach, targeting pregnant women and mothers with infants and toddlers. Community service was held on Wednesday, December 17, 2025, from 8:30 a.m. to 12:00 p.m. at the Boegenvil Health Center in Cabawan Village, Tegal City, with 53 participants. The results of this activity showed an increase in the level of knowledge of the participants, from 11 people with a good level of knowledge to 41 people after receiving counseling, with 3 participants still having a low level of knowledge.

Data from the 2020 LFSP (Long Form Population Census) recorded a maternal mortality ratio of 189 per 100,000 live births, while the infant mortality rate was recorded at 16.85 per 1,000 live births. The causes of maternal mortality were hemorrhage, preeclampsia/eclampsia, infection, prolonged labor, and miscarriage. Meanwhile, the majority of infant deaths were due to low birth weight, asphyxia, and infection at birth. Stunting remains a particular concern in Tegal City. Various measures have been taken, and the stunting rate has decreased to around 13.8% according to data from early 2025. This PKM is expected to increase public knowledge on caring for pregnant women, women in labor, postpartum women, and newborns, as well as preventing stunting in children, thereby reducing maternal and infant mortality rates. The methods used in this activity include health education and outreach with a promotive and preventive approach, targeting pregnant women and mothers with infants and toddlers. Community service was held on Wednesday, December 17, 2025, from 8:30 a.m. to 12:00 p.m. at the Boegenvil Health Center in Cabawan Village, Tegal City, with 53 participants. The results of this activity showed an increase in the level of knowledge of the participants, from 11 people with a good level of knowledge to 41 people after receiving counseling, with 3 participants still having a low level of knowledge.

The goal of continuous midwifery care is to use the SOAP documentation technique to provide comprehensive care to pregnant women up to birth control according to care standards. From May 2 - July 14, 2025, Mrs.C, G2P1A0, 32 years old received continuous midwifery care from pregnancy until get contraception methods, starting at 34 weeks of gestation. The mother complained of back pain during prenatal check-ups. The labor process went smoothly. With the assistance of a midwife, the baby was born on June 10, 2025. Birth weight: 3000 grams; length: 50 cm; head circumference: 34 cm; chest circumference: 33 cm; received Hb0 vaccine two hours after birth, eye ointment, and vitamin K shortly thereafter. The baby did not experience any problems or complaints during the first visit. Mrs. C received four visits during the postpartum period. The mother did not feel anything during the first visit up to the following visits. She continued to breastfeed exclusively, and her vital signs and fundal height returned to normal. The mother used a three-month injectable contraceptive so as not to interfere with the exclusive breastfeeding program. Mrs.C has received continuous midwifery care during pregnancy and contraceptive use, and her health is normal. It is expected that the midwife will be able to provide continuous midwifery care so that in the event of an emergency, it can be immediately identified and promptly handled.

A high-risk pregnancy is a pregnancy that can affect both the pregnancy, delivery, newborn, and postpartum period. There are several high-risk pregnancies, including pregnant women who are <145cm tall, have low birth weight, are too young, and give birth too closely spaced, or what is known as the 4T. Prevention is carried out by conducting comprehensive supervision, this is a way to reduce MMR and IMR. The Central Java government has developed the One Student One Client (OSOC) program, it is hoped that the implementation of this program can reduce MMR in Central Java. MMR according to WHO in 2023 reached 189/100,000 live births, MMR based on ASEAN reached 235/100,000 live births, MMR according to the Indonesian Ministry of Health reached 205/100,000 live births, MMR in Central Java in 2023 has reached 485/100,000 live births, MMR in Brebes in 2023 54/100,000 live births and at the Bantarkawung Community Health Center MMR in 2023 amounted to 2 cases of maternal death. In this study, researchers used Varney and SOAP to document midwifery care comprehensively, with direct qualitative descriptive approach methods such as observation, interviews, and documentation.