Video-Assisted Thoracoscopic Left Cardiac Sympathetic Denervation in a Young Child with Jervell and Lange-Nielsen Syndrome and a Family History of Sudden Infant Death: A Case Report
This case report demonstrates that video-assisted thoracoscopic left cardiac sympathetic denervation can be safely performed in a 4-year-old child with high-risk Jervell and Lange-Nielsen syndrome through meticulous multidisciplinary perioperative planning, offering a life-saving intervention for patients who remain symptomatic despite beta-blocker therapy.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
Imagine a heart that beats with a rhythm slightly out of step with the rest of the body, not because of a structural flaw, but because of a tiny electrical glitch in the way its cells talk to one another. This is the reality for people with a condition called Long QT syndrome, a disorder where the heart takes too long to recharge between beats, creating a dangerous window where a sudden shock can trigger a fatal rhythm. In a rare and severe version of this condition, known as Jervell and Lange-Nielsen syndrome, the problem is even more profound. It is caused by a specific genetic error that affects not only the heart's electrical system but also the inner ear, leading to profound deafness from birth. Because the heart is so prone to dangerous arrhythmias, and because the usual medication to calm it down often fails to stop the symptoms completely, doctors face a difficult challenge: how to protect a young child with this condition, especially when that child has profound hearing loss.
This story centers on a four-year-old girl from rural Pakistan who lived with this exact danger. Born to parents who were healthy carriers of the genetic mutation, she was diagnosed with the syndrome after she began having episodes that looked like seizures but were actually caused by dangerous heart rhythm disturbances. Her medical history was marked by a tragic family secret: a brother who had died as an infant during a similar episode, which was originally thought to be epilepsy but was likely a cardiac event. Despite being treated with beta-blockers, a standard medication to slow the heart, she continued to have dangerous electrical storms. Her heart was structurally normal, meaning the walls and valves worked perfectly, but the electrical wiring was flawed. The medical team faced a critical decision: how to intervene in a child so small and so fragile without causing new harm.
The solution they chose was a delicate surgical procedure called left cardiac sympathetic denervation. To understand what this involves, one must picture the nervous system as a network of wires that can accidentally speed up the heart when a person is stressed or frightened. In this surgery, the doctors aimed to cut the specific wires that send those "speed up" signals to the left side of the heart. The goal was to make the heart less likely to react violently to stress, effectively removing the trigger for the dangerous rhythm. Because the patient was only 13 kilograms, a very small size for such an operation, the team decided to use a minimally invasive approach called video-assisted thoracoscopic surgery. Instead of making a large cut across the chest, they made three tiny holes, just a few millimeters wide, and guided a camera and tiny instruments inside the chest cavity to find and remove the targeted nerve tissue.
The operation was a success, performed without any complications. The surgeons carefully removed the lower part of a nerve cluster called the stellate ganglion and a section of the sympathetic chain, which runs along the spine. Throughout the process, the team maintained a strict safety protocol that focused heavily on the balance of minerals in the blood, specifically potassium and magnesium, because even small shifts in these levels could trigger a heart attack in a patient with this condition. They kept the child under continuous heart monitoring with defibrillator pads ready to shock the heart back to a normal rhythm if needed. The surgery took place without the need for strong heart-stimulating drugs, and the child was extubated in the operating room before being transferred to the paediatric cardiac intensive care unit in a stable condition.
In the days that followed, the recovery was smooth. The child did not develop any signs of the side effects that sometimes occur with this surgery, such as a drooping eyelid or a lack of sweating on one side of the face, which would indicate that too much nerve tissue was removed. She was discharged the following day, returning home with her original medications and a significantly reduced risk of a fatal event. This case demonstrates that even for very young children with this rare and severe genetic condition, this specific nerve surgery can be performed safely when supported by a highly coordinated team of specialists. It also highlights a crucial lesson for families: when a child has unexplained seizures and deafness, or when an infant dies suddenly without a clear cause, the underlying issue might be a heart condition rather than a brain disorder. By recognizing the pattern early and using precise, minimally invasive tools, doctors can offer a lifeline to children who would otherwise be at extreme risk.
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