Pregnancy-induced hypertension (PIH) is a critical health issue in Nigeria, threatening both maternal and fetal well-being, as highlighted by a 2024 study and medical experts. The condition, which affects 6.4% of pregnancies, can progress to severe complications like pre-eclampsia and eclampsia, endangering lives if not detected and treated promptly.
The study, titled "Prevalence and determinants of hypertensive disorders of pregnancy in Nigeria: a multi-centre study," analyzed data from 71,758 women across 54 referral-level health facilities. It revealed that 49.8% of cases involved gestational hypertension, while 9.5% were pre-eclampsia and 7% eclampsia. These findings underscore the urgency of addressing PIH as a public health priority.
Lewis Aituma, a Consultant Obstetrician and Gynaecologist at the University of Benin Teaching Hospital, emphasized that PIH is a major contributor to adverse pregnancy outcomes. He noted that while no single cause exists, risk factors include previous PIH, first pregnancy, advanced maternal age, diabetes, kidney disease, and obesity. "Women with these conditions must be vigilant," Aituma said, stressing the importance of regular antenatal care.
The research also identified specific demographic trends, finding that women over 35, those with no prior childbirth, and individuals with multiple pregnancies or a history of caesarean sections or miscarriages faced higher risks. Aituma warned that these groups require closer monitoring to mitigate complications.
Symptoms such as persistent headaches, blurred vision, chest pain, and rapid leg swelling can signal PIH, but some women may exhibit no obvious signs. Aituma advised pregnant individuals to prioritize routine blood pressure checks and report concerning symptoms immediately. "Early intervention is crucial," he emphasized, noting that delayed action could lead to severe outcomes.
The World Health Organization (WHO) recommends regular blood pressure monitoring during pregnancy to prevent complications. Aituma explained that unmanaged PIH can progress to pre-eclampsia, causing seizures, stroke, and kidney failure in mothers, while increasing the risk of preterm birth, fetal growth restriction, and stillbirths for babies.
According to the study, 11.9% of pregnancies affected by hypertensive disorders ended in stillbirth, and 3.7% of women died due to related complications. WHO also lists preterm birth, placental abruption, and maternal or fetal death as potential consequences of severe cases. Aituma stressed that timely delivery and blood pressure management are critical in severe scenarios.
Treatment strategies vary based on the condition's severity and gestational age. For less severe cases, the focus is on blood pressure control and preventing complications until delivery. In advanced pregnancies, immediate delivery may be necessary, while early gestation cases might involve efforts to prolong the pregnancy safely.
Aituma highlighted the importance of lifestyle modifications, including maintaining a healthy weight, regular exercise, and attending antenatal appointments. He also urged women to monitor their blood pressure and seek medical attention for any alarming symptoms. "Prognosis is generally favorable when the condition is detected early," he said.
The Nigerian study underscores the need for improved healthcare access and education. Aituma called for increased awareness campaigns to ensure women recognize the risks and seek timely care. He also criticized the lack of resources in some regions, which exacerbates the challenges of managing PIH.
Public health officials have echoed these concerns, noting that PIH contributes to Nigeria's high maternal mortality rate. The country's maternal mortality ratio remains among the highest globally, with preventable conditions like PIH playing a significant role. Experts argue that strengthening antenatal services is essential to reducing these figures.
Despite the challenges, Aituma remains optimistic about the potential for improvement. He pointed to successful interventions in other regions as proof that targeted efforts can make a difference. "With proper care and resources, many complications can be avoided," he said.
The findings also highlight disparities in healthcare access, particularly in rural areas where antenatal services are limited. Aituma urged policymakers to prioritize maternal health in national agendas, emphasizing that investing in this area yields long-term benefits for communities.
In addition to medical interventions, Aituma stressed the role of community education. He recommended that local leaders and healthcare workers collaborate to disseminate information about PIH and its risks. "Knowledge is power," he said, "and informed women are better equipped to protect their health."
The study's authors concluded that hypertensive disorders of pregnancy remain a pressing public health issue in Nigeria. They called for multi-sectoral efforts to address the root causes, including poverty, lack of education, and inadequate healthcare infrastructure. Aituma added that these factors must be tackled to achieve meaningful progress.
Public health advocates have also raised concerns about the underreporting of PIH cases, which may skew statistics and hinder effective policymaking. They recommend expanding data collection and improving reporting mechanisms to ensure accurate tracking of the condition's prevalence.
As Nigeria continues to grapple with maternal health challenges, the urgency of addressing PIH cannot be overstated. Aituma's warnings and the study's findings serve as a call to action for healthcare providers, policymakers, and communities to work together in safeguarding maternal and fetal health.
The issue of PIH reflects broader systemic challenges in Nigeria's healthcare system. Experts argue that without sustained investment in maternal care, the country will struggle to meet global health targets. Aituma's insights and the 2024 study provide a roadmap for addressing this critical issue, emphasizing the need for immediate and coordinated action.