Introduction

Brief overview

Individuals who have Truncus arteriosus have a heart that behaves differently from the normal; this necessitates perpetual medical check-ups if they are to continue to stay in good health. Health professionals check their ejection fraction, determine the condition of the valve, and also their pressure level, besides helping them if they face any complications due to the disease. With the right treatment and support, such individuals can live their lives normally, going from children to adults in cardiology themselves.¹

Pathophysiology of truncus arteriosus

Truncus arteriosus is a heart defect where a single large blood vessel comes out of the heart instead of two separate ones (the aorta and pulmonary artery). This happens because the heart’s early development doesn’t properly divide the blood vessels. The single vessel, called the common trunk, carries both oxygenated and deoxygenated blood, mixing them.³

This mixing means less oxygen-rich blood gets to the body, leading to symptoms like a bluish tint to the skin (cyanosis) and difficulty breathing. The condition often comes with a hole in the heart (ventricular septal defect), and the blood vessels may be in the wrong positions. Overall, it disrupts normal blood flow, making it harder for the body to get enough oxygen. This can lead to heart and lung problems if not treated.³

Symptoms

Infants with truncus arteriosus often present with symptoms shortly after birth. These may include cyanosis, a bluish tint to the skin due to low oxygen levels, along with rapid breathing and shortness of breath. Other common symptoms include difficulty feeding, poor weight gain, excessive sweating, and extreme fatigue. Some infants may also develop swelling in the legs, feet, or abdomen due to fluid retention, and a heart murmur may be detected during a physical examination.¹

Diagnosis and tests

Truncus arteriosus is usually diagnosed immediately after birth when noticeable symptoms appear. One of the first signs is a blue or brown skin tone, known as cyanosis, which is caused by the supply of insufficient oxygen in the blood. The affected newborns may experience difficulty in breathing, which may be the initial sign of the position.⁴

During the regular postpartum examinations, healthcare professionals assess the breathing of a newborn by listening to the lungs with a stethoscope. In cases of Truncus Arteriosus, fluid buildups in the lungs can be detected, which suggests heart-related complications. Additionally, the healthcare provider listens to the child's heart for irregular rhythm or unusual sounds, such as a heart murmur- a specific sound that is caused by disturbed blood flow through distorted heart structures. These initial findings often induce further clinical testing to confirm the situation and determine the appropriate treatment plan.⁴

Pulse oximetry measures oxygen levels in the blood through the fingers or sensors placed on the feet. The low oxygen levels may indicate an issue with the heart or lungs. A chest X-ray shows the heart and lungs, which reveal heart growth and fluid in the lungs. An echocardiogram is the main test, which uses sound waves to create images. It shows a hole between a large vessel arising from the heart and the lower cells of the heart (ventricular septal defects). It helps in confirming the diagnosis and guiding treatment.⁴

Treatment

Infants with Truncus arteriosus usually require surgery to improve blood flow and oxygen levels. These processes are often done early in life, usually within a few weeks after birth. In some cases, additional surgery may be necessary as the child grows. Before surgery, drugs such as diuretics (water pills) are often prescribed to help the kidneys remove excess fluid from the body, a common symptom of heart failure. Additionally, positive inotropes can be given to help the heart pump more effectively, improve blood flow, and manage blood pressure, especially in cases of severe heart failure. Primary surgery for Truncus arteriosus usually consists of several stages: a new, full aortic reconstruction of large vessels and closure of the middle hole. The surgeon can also keep a tube and valve that can create a functional pulmonary artery, connecting the right lower heart chamber to the pulmonary artery. Since the tube does not grow with the child, the child will require follow-up surgery to replace it as it grows. As the child matures, future surgery can be done by using a catheter. This minimally invasive approach involves inserting a flexible tube into a flexible tube in blood vessel, often through the waist, to distribute new valves or perform procedures such as balloon angioplasty, which widens the blocked arteries. After surgery, it is necessary to monitor the function of the heart with a congenital cardiologist and ensure proper management throughout the entire life of a person.⁴

Lifelong follow-up: multidisciplinary care and coordination

Multipletening care and coordination

Truncus arteriosus requires a multi-disciplinary approach to ensure widespread care, especially for individuals who have an infection in adult care from paediatrics. Pediatric cardiologists, adult congenital cardiologists, pulmonologists, surgeons, and other health professionals are essential in providing lifelong care. This team-based approach helps to develop medical requirements, from initial surgery to lifelong monitoring of heart function. The cooperation between experts detects the early detection of complications and provides a timely intervention that improves results for patients with Truncus arteriosus.⁵

Genetic consultation plays an important role, especially for people with family congenital heart conditions. Understanding the hereditary nature of some congenital heart defects can help in genetic counselling and family planning for individuals diagnosed with Truncus arteriosus.⁶

Psychosocial and quality of life considerations

Staying with Truncus arteriosus, especially with ongoing medical management and many surgeries, can affect mental and emotional health. Patients may experience anxiety, depression, and stress due to the chronic nature of the situation. The need for mental health aid is important, especially in managing the psychological tolls of living with a lifetime. The combination of strategies, such as counselling, support groups, and colleague interactions, can increase emotional flexibility and quality of life.⁷

For many individuals, the situation can affect their daily lives, especially in terms of physical boundaries and employment. Providing appropriate resources, including adaptive support, vocational training, and housing, can help patients manage their condition while maintaining an active role in society.⁸

Support systems are important for individuals with Truncus Arteriosus. Patient and family education, as well as advocacy programs, can empower families and carers, allowing them to better navigate the complications of care and seek necessary resources.⁹

Transitioning from paediatric to adult care

Paediatricians to adult cardiologists present infection care to specific challenges, especially when young patients begin to age and require a different level of management. A smooth handoff among paediatrics and adult care providers ensures that the patient's medical history is accurately expressed and that proper care continues. This infection is especially important for patients with congenital heart diseases such as Truncus arteriosus, where special adult congenital heart disease (ACD) centres play an important role in the management of their long-term health.10 It is necessary to develop a lifetime care plan for individuals with Truncus Arteriosus. As the age of the patient increases, the need for healthcare will develop, and ongoing monitoring will be required to detect complications such as valve leakage or drainage narrowing.¹¹

Long-term outlook and prognosis

With early diagnosis, proper surgical intervention, and ongoing care, the diagnosis of the disease has been greatly improved for individuals with Truncus arteriosus. The progression rate has increased due to progress in both medical and surgical treatment, many individuals complete life . Prolonged results are often positive when patients receive continuous follow-up care that includes regular cardiological assessment, echocardiograms, and electrocardiograms for monitoring heart function.¹²

Adverse results, such as heart failure, can still occur, especially if complications arise, such as narrowness of the drain or leakage of the trunk valve. Risk factors for these adverse results include poor compliance with follow-up appointments, delayed recognition of complications, and other comorbidities such as high blood pressure.¹³

Progress in medical and surgical care, such as catheter-based valve replacement and better clinical techniques, has expanded treatment options, improved long-term results, and reduced the requirement for aggressive surgery.¹⁴ Constant research into these innovations can lead to even better forecasting in the future.

Summary 

Truncus arteriosus is a congenital heart defect where a single large vessel arises from the heart, mixing oxygenated and deoxygenated blood. This reduces oxygen supply to the body, causing symptoms like cyanosis, difficulty breathing, and poor weight gain. It is often accompanied by a ventricular septal defect (a hole in the heart) and abnormal vessel positioning.

Diagnosis is typically made at birth through tests like echocardiograms, chest X-rays, and pulse oximetry. Treatment usually involves surgery to correct the heart's structure, often performed early in life. Lifelong follow-up with a multidisciplinary care team, including cardiologists and surgeons, is essential to monitor heart function and manage any complications.

With proper treatment, including surgery and ongoing care, individuals with truncus arteriosus can live a relatively normal life, though they require continuous monitoring and follow-up care into adulthood.