分类： health

Leading Dominican cardiologist and electrophysiologist Fernando Vidal Bett has issued a stark public health warning: sudden cardiac death has overtaken all forms of cancer to become the number one cause of death in the Dominican Republic. As director of the Arrhythmia, Electrophysiology and Pacemaker Unit at the country’s Cedimat Cardiovascular Center, Vidal Bett shared detailed insights on this public health crisis in an interview with local outlet Listín Diario.

Sudden cardiac death is defined as an unexpected fatal event triggered by malignant cardiac arrhythmias — abnormal, irregular heart rhythms — that claims a patient’s life within 24 hours of symptom onset. Vidal Bett explained that half of all deaths linked to cardiovascular disease in the country are sudden cardiac deaths, making the condition one of the most pressing ongoing challenges for the Dominican public health system. Contrary to common misconception, however, he stressed that not all patients diagnosed with heart disease will experience sudden cardiac death, noting that the highest risk is concentrated among patients with pre-existing conditions. These high-risk groups include individuals who have already suffered a heart attack, those living with dilated cardiomyopathy (an enlarged heart), and patients with diagnosed heart failure.

Vidal Bett outlined a wide range of modifiable and non-modifiable risk factors that contribute to elevated rates of cardiovascular disease and subsequent sudden cardiac death. Non-modifiable risks include a family history of cardiac conditions, while key preventable risks include tobacco use, chronic hypertension, obesity, a sedentary lifestyle, diabetes, and excessive alcohol consumption. He explained that tobacco and heavy alcohol use directly contribute to the development of ischemic cardiovascular disease, a condition marked by blocked coronary arteries. When a coronary artery becomes obstructed, a section of heart tissue dies and forms scar tissue, which is prone to generating dangerous arrhythmias that act like “short circuits” within the heart, often resulting in sudden death.

Beyond traditional risk factors, the cardiologist highlighted lesser-known contributors to poor cardiac health: chronic stress, anxiety, and untreated sleep disorders. All three conditions often drive elevated blood pressure and trigger life-threatening arrhythmias. He also issued a specific warning to young Dominican people about the dangerous combination of alcohol and energy drinks, which research has linked to a sharp increase in sudden cardiac events and ischemic heart disease among younger populations.

While cardiovascular disease does not have an inherent gender bias, Vidal Bett noted that the condition typically affects men a decade or more earlier than women, due to the cardioprotective effects of female hormones until menopause. After that life stage, however, the risk of sudden cardiac death equalizes between men and women.

Though sudden cardiac death can occur without obvious pre-warning signs, Vidal Bett identified key red flags that individuals should not ignore. These include a family history of sudden cardiac death before age 40, recurring chest pain, unexplained shortness of breath, dizziness, lightheadedness, unexpected fainting, and persistent heart palpitations. He specifically emphasized that any patient who experiences loss of consciousness leading to a head injury should be categorized as high-risk and receive immediate cardiac evaluation.

To combat the growing burden of sudden cardiac death, Vidal Bett stressed that proactive intervention remains the most effective strategy. The gold standard for prevention among high-risk patients, he confirmed, is the implantable cardioverter-defibrillator (ICD), the only medical device proven to prevent fatal sudden cardiac events. Describing the device as similar to a standard implanted pacemaker, he explained that an ICD continuously monitors heart rhythm, automatically detects malignant, potentially lethal arrhythmias, and delivers immediate targeted treatment — either through rate-adjusting stimulation or a controlled defibrillation shock to restore normal rhythm.

Despite the device’s proven effectiveness, Vidal Bett noted that a core challenge remains accurately identifying patients who qualify for ICD implantation. Eligible high-risk groups include patients with hypertrophic cardiomyopathy, individuals who have suffered a heart attack and have residual heart function below 35%, and patients who have already survived a sudden cardiac arrest. He clarified that ICDs are not implanted in terminally ill patients with poor prognosis; the procedure is only performed on stable patients with a life expectancy of more than one year, with the dual goal of extending lifespan and improving quality of life. Currently, an ICD costs between $10,000 and $15,000, has a 7 to 10 year battery life, and improves patient outcomes up to 80% for qualifying individuals.

Recently, the Dominican Society of Cardiology’s Electrophysiology Council took a major step forward in addressing the sudden cardiac death crisis by issuing an official position statement supporting the responsible use of ICDs for prevention across the country. The document is rooted in the latest international scientific evidence, adapted specifically to the Dominican public health context, and outlines clear clinical recommendations for ICD use, highlights the importance of specialized cardiac evaluation, and addresses pathways for long-term economic sustainability of ICD access. The statement marks a key milestone for public education and clinical training initiatives focused on cardiovascular health in the nation.

One ongoing gap in addressing the crisis, Vidal Bett acknowledged, is the lack of a national sudden cardiac death registry in the Dominican Republic. Currently, death certificates rarely specify sudden cardiac death as a cause of death, making it difficult to track exact prevalence and allocate public health resources effectively. However, he confirmed that the Dominican Society of Cardiology is already taking active steps to develop and launch the first national registry to address this data gap.

Against a backdrop of rising temperatures driven by climate change that are expanding the active season for disease-transmitting insects, the United States has launched its first ever residential pilot program deploying non-biting male mosquitoes infected with the naturally occurring bacterium Wolbachia to curb mosquito-borne disease spread.

On a recent afternoon just outside of Washington D.C., Todd Montgomery, 32-year-old founder of the private firm Bee Safe Mosquito Control, twisted open the cap of a small tube and released hundreds of specially modified mosquitoes into a suburban residential yard.

Unlike common pest control methods that rely on pesticide spraying, this approach targets the Aedes albopictus, or tiger mosquito, an invasive species that acts as a vector for dangerous diseases including dengue. The tactic leverages a unique biological mechanism: the released males carry a specific strain of Wolbachia that naturally occurs in some insects, and when they mate with wild, uninfected female tiger mosquitoes, their eggs fail to hatch, gradually suppressing the local population over time. The service, branded “ZAP Males,” is the first initiative of its kind offered to private residential homeowners across the country. By the end of the summer, the company plans to release a total of 600,000 modified mosquitoes across the region.

Montgomery, a former electrical engineer who launched the company in 2023, framed the effort as a critical response to growing risks tied to climate change. “With climate change, we are facing a ticking time bomb,” he told AFP. Rising average temperatures across most of the U.S. have extended the stretch of warm, humid conditions that disease-carrying mosquitoes need to thrive, lengthening their active season and increasing public exposure to mosquito-borne illness. The urgency of the issue has been amplified locally by the recent confirmation of the first locally acquired case of dengue in Northern Virginia.

The pesticide-free approach fills a growing demand from homeowners who are wary of chemical fumigation, which many avoid due to links between some common pesticides and increased cancer risk. For 67-year-old breast cancer survivor Sandra Marquardt, the program offered a solution to a dilemma: she refused to spray chemicals on her lush property, but was frustrated by constant mosquito infestations that left her unable to enjoy the large garden she tends each year. Marquardt told reporters she has been impressed with the results, calling the Wolbachia mosquito intervention “surprisingly effective.”

So far, 25 residential customers have signed up for the program. Each participating property receives 1,500 modified males per week over 16 weeks, adding up to the full 600,000 mosquitoes the company will release by the end of the pilot. The method has already been deployed at large scale in other parts of the world: Singapore runs the world’s largest public sector Wolbachia program, which launched in 2016 and now releases more than 10 million modified mosquitoes weekly. A peer-reviewed study published in the *New England Journal of Medicine* found that the approach reduced the Aedes mosquito population by a substantial margin, cutting the risk of dengue transmission by more than 70%.

Still, results have varied for early participants in the U.S. pilot. April Chunko, a 44-year-old mother of a young child from Silver Spring who joined the program immediately due to her distrust of harsh chemicals around her son’s backyard sandbox, says she has not yet noticed a major reduction in biting mosquitoes. Chunko noted her property sits adjacent to a dense stretch of trees, which may complicate the program’s local effectiveness.

Experts note that outcomes of the Wolbachia suppression method do depend on local geographic and environmental conditions. Marcelo Jacobs-Lorena, an emeritus professor at Johns Hopkins University who specializes in mosquito-borne disease research, explained that wild mosquitoes can travel with wind currents, meaning results vary based on local landscape features.

Jacobs-Lorena also highlighted an alternative approach to leveraging Wolbachia that focuses on disease blocking rather than population reduction. Instead of only releasing infected males to suppress populations, this method releases both males and females that carry the same Wolbachia strain. This allows eggs to hatch normally, leading the bacteria to spread through the entire local mosquito population. Since Wolbachia naturally blocks the replication and transmission of viruses that cause dengue, Zika, and chikungunya, mosquitoes can still bite humans but no longer spread these dangerous diseases.

Against a backdrop of 20 competing delegations from across the Latin American and Caribbean region, the Dominican Republic has secured a spot among the top six performers at the 5th Regional Digital Health Connectathon, held in Panama City. The high-profile regional event, organized alongside the PH4H 2026 Regional Conference, was designed to test national health systems’ capacity to share clinical data safely and efficiently in line with global interoperability norms.

Unlike conventional conferences that focus only on policy discussion, the Connectathon puts technical teams through hands-on, real-world scenario testing to evaluate cross-border health information exchange. Dominican technical delegations achieved a perfect 100% completion rate for all assigned test cases, a result that cemented its standing as one of the region’s top-performing participants in this exercise.

Testing was centered on five high-priority domains critical to modern cross-border digital health: the International Patient Summary (IPS), cross-border telehealth consultations, electronic yellow fever vaccination certificates, electronic medication prescriptions, and health data cybersecurity frameworks. The Dominican team successfully demonstrated proficiency across every testing area: it proved capable of producing and sharing standardized patient clinical summaries, authenticating digital vaccination certificates, processing cross-border telemedicine requests, retrieving accurate medication data, and deploying core security tools including digital signatures and QR codes to safeguard sensitive patient health information.

According to the Dominican Republic’s Ministry of Public Health, this strong performance marks a meaningful milestone in the rollout of the country’s National Digital Health Strategy. It also paves the way for the planned implementation of the Single Electronic Health Record (known locally as EEUS), a transformative system that will grant authorized medical providers secure access to a patient’s full clinical history, regardless of where the original care and data collection took place. This achievement positions the Dominican Republic as a growing leader in regional digital health integration, bringing it closer to a fully connected, patient-centered national health ecosystem.