Congenital Heart Disease (CHD), known locally as Penyakit Jantung Bawaan (PJB), remains a significant public health challenge in Indonesia, contributing to a substantial portion of neonatal mortality across the archipelago. While the exact etiology of the condition often remains elusive, medical experts are increasingly highlighting avoidable risk factors and the life-saving potential of early screening. During a recent webinar hosted by the Indonesian Pediatric Society (IDAI), Dr. Rizky Adriansyah, MKed, a pediatric specialist and Chairman of the IDAI Cardiology Coordination Working Unit, emphasized that while the precise cause of CHD is often unknown, the identification of specific risk factors during pregnancy is vital for reducing the incidence of the disease and improving survival rates among newborns.
According to data presented by Dr. Rizky, Congenital Heart Disease is the second leading cause of neonatal death in Indonesia, accounting for approximately 17 percent of such fatalities, surpassed only by complications arising from prematurity. This statistic, based on 2017 national health data, underscores the urgency of integrating cardiac screening into routine neonatal care. Globally, the World Health Organization (WHO) estimates that one in every 100 newborns is born with some form of CHD. Of these cases, approximately 25 percent are classified as critical CHD, requiring immediate medical or surgical intervention within the first days or weeks of life. In the Indonesian context, this translates to a frequency of two to four critical cases for every 1,000 live births, representing thousands of infants annually who require specialized cardiac care.
Identifying Modifiable Risk Factors During Pregnancy
The development of the fetal heart occurs very early in gestation, often before a woman is even aware she is pregnant. Dr. Rizky noted that while medical science cannot always pinpoint a single cause for a heart defect, researchers have identified several high-impact risk factors that frequently appear in clinical literature. Three primary factors currently dominate the discussion regarding CHD prevention: maternal infections, nutritional deficiencies, and exposure to specific medications.
The first and perhaps most preventable factor is the Rubella infection. When a pregnant woman contracts the Rubella virus, particularly during the first trimester, the virus can cross the placenta and interfere with fetal organ development, a condition known as Congenital Rubella Syndrome (CRS). Cardiac defects are a hallmark of CRS, often manifesting as patent ductus arteriosus (PDA) or pulmonary artery stenosis. To mitigate this risk, health authorities advocate for universal Rubella vaccination for women of childbearing age before they conceive, ensuring immunity is established prior to pregnancy.
The second major factor is a deficiency in folic acid. Folic acid, or Vitamin B9, is essential for DNA synthesis and cellular repair. While its role in preventing neural tube defects like spina bifida is well-documented, emerging evidence increasingly links adequate folic acid intake to proper cardiac septation—the process by which the heart’s chambers are divided. Dr. Rizky emphasized that prenatal supplements and a diet rich in leafy greens, legumes, and fortified grains are essential components of a healthy pregnancy.
Thirdly, the consumption of certain medications during pregnancy can disrupt the intricate signaling pathways required for heart formation. Specifically, Dr. Rizky highlighted anti-seizure medications (anticonvulsants) as a known risk factor. Women with chronic conditions such as epilepsy must work closely with their neurologists and obstetricians to manage their treatment plans, potentially switching to safer alternatives or adjusting dosages before and during pregnancy to minimize risks to the fetus.
The Diagnostic Gap in the Indonesian Healthcare System
Despite the prevalence of CHD, a significant gap exists between the number of children born with heart defects and those who receive timely treatment. Dr. Rizky revealed a sobering reality: fewer than 50 percent of CHD cases in Indonesia are currently handled by the medical system. This discrepancy is the result of a complex interplay of factors, including geographic barriers, limited infrastructure, and a shortage of specialized human resources.
Indonesia’s unique geography as an expansive archipelago poses a logistical challenge for the delivery of specialized pediatric cardiac care. Most advanced cardiovascular centers are concentrated in major urban hubs on the island of Java, leaving families in remote provinces with limited access to pediatric cardiologists and cardiothoracic surgeons. Furthermore, the high cost of diagnostic tools such as echocardiography machines means that many community health centers (Puskesmas) are unequipped to perform definitive screenings.
Beyond infrastructure, there is a critical shortage of medical personnel trained in pediatric cardiology. The ratio of pediatric cardiologists to the total population remains far below international recommendations, leading to long waiting lists for life-saving surgeries. This delay is often fatal for infants with critical CHD who require intervention within the first month of life. Dr. Rizky also pointed to a lack of public awareness; many parents do not recognize the subtle signs of heart distress in their infants, often mistaking them for common respiratory issues or feeding difficulties.
Clinical Manifestations and Early Detection Strategies
Recognizing the symptoms of CHD early is the most effective way to improve a child’s prognosis. One of the most common clinical signs of a heart defect in infants is poor weight gain, often referred to as "failure to thrive." Because the heart must work significantly harder to pump blood, the infant burns more calories than they can consume, often becoming exhausted during breastfeeding or bottle-feeding.
In more severe or critical cases, symptoms may appear within the first 24 to 48 hours after birth or during the first week of life. These symptoms include cyanosis (a bluish tint to the skin, lips, or fingernails indicating low oxygen levels), rapid breathing, and excessive sweating. To address the difficulty of diagnosis in resource-limited settings, Dr. Rizky advocated for the use of pulse oximetry as a primary screening tool.
Pulse oximetry is a non-invasive, inexpensive, and highly sensitive method for detecting critical CHD. By placing a sensor on the infant’s right hand and either foot, healthcare providers can measure the oxygen saturation in the blood. A significant difference in oxygen levels between the upper and lower extremities can indicate a heart defect that requires immediate further investigation via echocardiography. This screening can be performed by midwives and general practitioners in less than five minutes, making it an ideal tool for widespread implementation across Indonesia’s primary care network.
Additionally, the use of a stethoscope remains a fundamental diagnostic practice. The presence of a heart murmur—an unusual sound heard between heartbeats—should prompt an immediate referral to a specialist. While not all murmurs indicate a serious problem, they are a primary indicator that the heart’s structure or blood flow may be abnormal.
Public Health Initiatives and the Role of Education
To combat the high mortality rate associated with CHD, the IDAI and other health organizations are turning to digital platforms to broaden the reach of medical education. Dr. Rizky mentioned the YouTube channel "Sehatkan Jantung Anak Indonesia" (Heal the Hearts of Indonesian Children) as a vital resource for both parents and healthcare workers. This platform provides tutorials on how to perform screenings and offers guidance on recognizing the early warning signs of cardiac issues.
The integration of CHD screening into national health policies is also a point of ongoing advocacy. By making pulse oximetry a mandatory part of newborn care protocols, the Indonesian government could significantly increase the detection rate of critical cases. Early detection not only saves lives but also reduces the long-term economic burden on the healthcare system. Infants diagnosed early often require less complex interventions compared to those whose conditions have worsened due to chronic hypoxia or heart failure.
Moreover, the role of the National Health Insurance (BPJS Kesehatan) is crucial in ensuring that families can afford the necessary treatments. While BPJS covers many cardiac procedures, the indirect costs—such as travel from remote islands to specialized centers—often remain a barrier for low-income families. Addressing these systemic issues requires a multi-sectoral approach involving the Ministry of Health, local governments, and non-governmental organizations.
Long-term Implications and the Path Forward
The impact of Congenital Heart Disease extends beyond the immediate medical emergency; it has profound implications for the long-term development of the child and the well-being of the family. Children who survive CHD may face ongoing developmental delays, increased susceptibility to respiratory infections, and the need for multiple surgeries throughout their lives. However, with modern medical advancements, many children with CHD can lead full, productive lives if they receive timely and appropriate care.
The path forward for Indonesia involves a three-pronged strategy: prevention, early detection, and the expansion of specialized care. Prevention begins with robust maternal health programs that prioritize Rubella vaccination and nutritional support. Early detection relies on training frontline health workers, such as the thousands of midwives working in rural villages, to use simple tools like pulse oximeters and stethoscopes effectively. Finally, expanding the capacity of regional hospitals to perform pediatric cardiac interventions is essential to decentralize care and reduce the burden on major urban centers.
Dr. Rizky Adriansyah’s insights serve as a call to action for the medical community and the public alike. While the complexities of the human heart mean that not every case of CHD can be prevented, the vast majority of deaths associated with the condition are avoidable through vigilance and systemic reform. By fostering a culture of early screening and supporting maternal health, Indonesia can protect its youngest citizens and ensure that a diagnosis of Congenital Heart Disease is no longer a terminal sentence, but a manageable medical condition.
