Background and Aims Retinopathy of prematurity (ROP) is a severe disease in preterm infants. It is seen more frequently in Low‐Middle Income Countries (LMIC) like Indonesia compared to High‐Income Countries (HIC). Risk factors for ROP development are ‐extreme‐ preterm birth, use of oxygen, neonatal infections, respiratory problems, inadequate nutrition, and blood and exchange transfusions. In this paper, we give an overview of steps that can be taken in LMIC to prevent ROP and provide guidelines for screening and treating ROP. Methods Based on the literature search and data obtained by us in Indonesia's studies, we propose guidelines for the prevention, screening, and treatment of ROP in preterm infants in LMIC. Results Prevention of ROP starts before birth with preventing preterm labor, transferring a mother who might deliver <32 weeks to a perinatal center and giving corticosteroids to mothers that might deliver <34 weeks. Newborn resuscitation must be done using room air or, in the case of very preterm infants (<29‐32 weeks) by using 30% oxygen. Respiratory problems must be prevented by starting continuous positive airway pressure (CPAP) in all preterm infants <32 weeks and in case of respiratory problems in more mature infants. If needed, the surfactant should be given in a minimally invasive manner, as ROP's lower incidence was found using this technique. The use of oxygen must be strictly regulated with a saturation monitor of 91‐95%. Infections must be prevented as much as possible. Both oral and parenteral nutrition should be started in all preterm infants on day one of life with preferably mothers' milk. Blood transfusions can be prevented by reducing the amount of blood needed for laboratory analysis. Discussion Preterm babies should be born in facilities able to care for them optimally. The use of oxygen must be strictly regulated. ROP screening is mandatory in infants born <34 weeks, and infants who received supplemental oxygen for a prolonged period. In case of progression of ROP, immediate mandatory treatment is required. Conclusion Concerted action is needed to reduce the incidence of ROP in LMIC. "STOP ‐ R1O2P3" is an acronym that can help implement standard practices in all neonatal intensive care units in LMIC to prevent development and progression.
Retinopathy of prematurity is an important cause of ocular morbidity and blindness in Indonesia. The overall incidence of ROP in infants born below 32 weeks in Indonesia is higher than in developed countries, and it is seen in infants with older gestational ages. This might be due to a less strict monitoring during the use of oxygen in Indonesia compared to industrialized countries.
Genetic adaptation to malaria is a longstanding research topic in anthropology and human genetics. Southeast Asian ovalocytosis (SAO) has been documented to have resistance to malaria; however, the implications of existing data are controversial. In particular, SAO resistance to malaria is unlcear in terms of the types of SAO, with/without the 27-base pair deletion in the band 3 gene (B3∆27). To shed light on the relationships between SAO and malaria, we surveyed Plasmodium infection, erythrocyte morphology, and the presence of the B3∆27 among the residents of a selected area in East Kalimantan, Indonesia where malaria is endemic. We screened peripheral blood smears (n = 128) for Plasmodium infection and erythrocyte morphology under a microscope, and then DNA was extracted from the smears to be used as a template for a polymerase chain reaction to detect the B3∆27. The prevalence of infection with Plasmodium including Plasmodium vivax and Plasmodium falciparum was approximately 30%. Among a total of 128 subjects, 9.4% and 18.0% showed moderate (ovalocytic cells: 30-49%) and severe (ovalocytic cells: 50-100%) ovalocytosis, respectively. A total of three B3∆27 carriers were identified. The data set was statistically analyzed and we observed that (1) higher ovalocytic rate resulted in lower malaria infection and (2) the B3∆27 did not prevent malaria infection. These results suggest that resistance of SAO to malaria is due to SAO without the B3∆27.
The total incidence of ROP as well as severe ROP in infants with a BW of <1000 g and 1000-1500 g in our NICU is higher than in a developed country. ROP in Indonesia is also seen in infants with a BW of 1500-2500 g. Increasing the awareness of the risks of oxygen as well as better equipment to monitor oxygen delivery is essential.
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