In this podcast from the PREMIER conference 2024, Francesca Stedman, a consultant paediatric surgeon from Southampton Children's Hospital discusses the care of the child who has ingested a button battery.

Button batteries are ubiquitous and come in various types and sizes. There are about 85 different kinds available or in use in the UK alone, found in everything from toys to hearing aids. The most notorious is the CR2032, which is about 20 millimeters in diameter and 3.2 millimeters thick. It contains lithium manganese oxide, and while its small size makes it convenient for electronics, it poses a significant risk if ingested.

The danger with button batteries lies in their potential to cause severe injuries when lodged in the esophagus. They can cause necrosis, which is essentially tissue death, due to a strong alkaline substance produced by the battery. This substance acts like a potent oven cleaner, rapidly causing damage. The esophagus has three natural narrowing points where these batteries often get stuck, increasing the likelihood of injury. The situation becomes critical very quickly, often within two hours of ingestion.

One of the most concerning aspects of these incidents is that button battery ingestions are rarely witnessed. Children might present with vague symptoms like drooling, difficulty swallowing, or even just being generally unwell. These can easily be mistaken for other common illnesses, leading to delays in diagnosis. In one particularly harrowing case, a child presented multiple times with symptoms of a respiratory infection, only for an x-ray to reveal a button battery lodged in the esophagus. By then, the damage was extensive.

When ingestion is suspected, immediate action is crucial. Getting a chest x-ray is the first step, and if necessary, a lateral x-ray can confirm the presence of a button battery by revealing a characteristic double rim or halo sign. Pre-hospital measures can include giving honey or jam, depending on the child’s age, to help mitigate the damage. However, these should never delay getting the child to the hospital.

Once at the hospital, the primary goal is to remove the battery as quickly as possible to prevent further injury. Depending on the location of the battery and available specialists, either ENT surgeons or paediatric surgeons may perform the removal. Post-removal care involves monitoring for complications like perforations or fistulas, which can develop days or even weeks later. In severe cases, these injuries can lead to life-threatening conditions, such as aorto-esophageal fistulas, which require immediate surgical intervention.

In summary, button battery ingestion is a serious and often underappreciated risk. Even in homes where precautions are taken, accidents can happen. The key is quick recognition and action. As parents and caregivers, we need to be vigilant about keeping these small, dangerous objects out of children's reach. And if an accident does occur, immediate medical attention is essential to minimize the risk of serious injury.

More details are available on the blogpost here.

In this St. Emlyn's podcast, Rick Body and Greg Yates, continue our exploration of diagnostic test accuracy, shifting our focus to positive predictive value (PPV) and negative predictive value (NPV). These concepts are vital for anyone preparing for exams or looking to enhance their application of diagnostic tests in clinical practice. While our last podcast discussion centred on sensitivity and specificity, PPV and NPV offer a different, arguably more clinically practical perspective on interpreting test results.

Positive predictive value (PPV) and negative predictive value (NPV) are essential tools for understanding the effectiveness of diagnostic tests. PPV helps us determine the likelihood that a patient with a positive test result actually has the condition, whereas NPV helps us gauge the probability that a patient with a negative test result does not have the disease. These values are crucial for making informed clinical decisions, particularly when considering the prevalence of a condition in the population. Today, we’ll delve into these concepts, their practical applications, and why it's important to consider both PPV and NPV alongside sensitivity and specificity.

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In today's episode, taken from live recordings at PREMIER 2024, we dive into an increasingly common treatment for type 1 diabetes: hybrid closed loop insulin pumps. We'll begin with a brief overview of traditional insulin pumps and explain how hybrid closed loops are different. The core of our discussion will be centered around three case studies, illustrating potential scenarios you might encounter in a pediatric emergency department and how to manage them effectively.

With NICE's recent technology appraisal advocating for universal access to hybrid closed loop systems for all type 1 diabetes patients, it's crucial to understand these devices. Over the next few years, you'll likely encounter these systems frequently. We'll cover the essentials of how these pumps work, their benefits, and potential issues that might arise, such as connectivity problems, cannula issues, and handling intercurrent illnesses.

Join us as we explore the revolutionary impact of hybrid closed-loop systems, which offer better glucose control and significantly improve the quality of life for those with type 1 diabetes.

Dr Nicola Trevelyan has been the Clinical Lead for the Paediatric Diabetes Service in Southampton for the last 20 years. During this time, she has seen huge changes in the management of CYP with diabetes. She has been involved in several large multicentre trials for paediatric diabetes, helping to better our understanding of how best to use new technologies in diabetes management in children and move forward access to new treatment technologies. She was one of the founding committee members for the Assoc of Children's Diabetes Clinicians (ACDC) in 2006 and has been on working parties for BSPED helping evidence base and re-write the national DKA guidelines in 2020 and for the National Paediatric Diabetes Audit. For the last 4 years, she has been on the Clinical Advisory Group for the RCPCH Quality Improvement Programme for Paediatric Diabetes.