Two case reports of retained steel insulin pump infusion set needles

Retained Diabetes Devices-A Literature Review

BACKGROUND

Diabetes management and treatment requires the use of many devices that frequently must puncture the skin, creating a risk of unintentional retention in the body as a retained diabetes device. In this article, we reviewed case studies about retained diabetes devices and presented analyses of the success rate of current imaging techniques in identifying retained devices and the success rate of device removal.

METHODS

PubMed and Google Scholar were searched for articles about retained diabetes devices. Relevant articles that included sufficient details about discovery and removal of the device were included. The success rate of identification and the success rate of removal of retained devices were both calculated as percentages.

RESULTS

Sixteen case studies of retained diabetes devices were identified. These devices included parts of continuous glucose monitors and infusion sets, a lancet, and various types of needles for insulin injection. Each case is presented with details about the year of publication, the retained diabetes device, the company that produced the device, the age and gender of the patient, the type of diabetes that the patient had, the location of the device, the reason for initial discovery of the retained device, the process of locating the device, the success rate for removal of the device, and the removal procedure of the device. Analysis revealed a 100% success rate for the use of imaging technology including X-rays and computed tomography to identify a retained diabetes device. The patients with retained diabetes devices had a 62.5% success rate for eventual removal of the device.

CONCLUSIONS

With the increasing use of injected, inserted, and implanted diabetes wearables for digital health, it is likely that some of the devices will detach, break apart, or otherwise become retained in the body. It is important to be aware of available technologies to identify retained diabetes devices so that it will be possible in most cases to surgically remove these devices if they detach or become retained.

Inflammation at Site of Insulin Infusion Diminishes Glycemic Control

The approximation of euglycemia is the most effective means of preventing diabetic complications, which is achieved through effective insulin delivery. Recent reports indicate that insulin phenolic preservatives, which are found in all commercial insulin formulations, are cytotoxic, pro-inflammatory and induce secondary fibrosis. Therefore, we hypothesize that these preservatives induce an inflammatory response at the site of insulin infusion leading to diminished glycemic control and adverse pharmacokinetic outcomes. Insulin degradation by inflammatory cell proteases was quantitated following protease treatment in vitro. A modified murine air pouch model was utilized to evaluate the relative inflammatory responses following infusions of saline, insulin preservatives, and insulin, utilizing the adjuvant irritant thioglycolate. Blood glucose levels were monitored in diabetic mice with and without air pouch irritation. A pharmacokinetic analysis evaluated insulin effectiveness for diabetic mice between these two conditions. Inflammatory cells are significantly present in insulin preservative-induced inflammation, which effects diminished blood glucose control by both insulin uptake and degradation. Insulin containing these preservatives resulted in similar degrees of inflammation as observed with the irritant thioglycolate. These studies imply that the preservative agents found in commercial insulin formulations induce an intense localized inflammatory reaction. This inflammatory reaction may be responsible for the premature failure of insulin infusion devices. Future studies directed at reducing this inflammatory reaction may prove to be an important step in extending the lifespan of insulin infusion devices.

Replacing Pumps with Light Controlled Insulin Delivery

PURPOSE OF REVIEW

The aim of this review is to summarize the development of the photoactivated depot (PAD) approach for the minimally invasive and continuously variable delivery of insulin.

RECENT FINDINGS

Using an insulin PAD, we have demonstrated that we can release native, bioactive insulin into diabetic animals in response to light signals from a small external LED light source. We have further shown that this released insulin retains bioactivity and reduces blood glucose. In addition, we have designed and constructed second generation materials that have high insulin densities, with the potential for multiple day delivery. The PAD approach for insulin therapy holds promise for addressing the pressing need for continuously variable delivery methods that do not rely on pumps, and their myriad associated problems.

Fluoroscopic-assisted laparoscopic retrieval of retained glucose sensor wire from the omentum

We describe a case in which retained wires from a continuous glucose monitor were removed from the abdominal wall and peritoneum of a 6-year-old boy. We highlight a concern for continuous glucose monitor use in children and discuss surgical techniques used to retrieve tiny, mobile objects from complex body cavities.

Foreign Body-Related Extremity Trauma in Children: A Single-Center Experience

The extremity foreign body in a child has propensity of getting missed or mistaken diagnosis. We report our experience of extremity foreign body trauma in order to increase awareness of this disease entity. The retrospective series of 24 retained foreign bodies was based on a 10-year chart review of emergency data (ICD code Z18). Patients with both upper and lower limb affections were included. Patients with ocular, otolaryngeal, tracheobronchial, gastrointestinal, and axial foreign bodies were excluded from the study. Male predominance (M:F = 20:4), young patient age (mean 6.8 years), variable lag period for consultation (range 3 h-8 years), and majority lower limb affection (58%; foot [7; 29%] and knee [5; 20.8%]) were some characteristics of extremity foreign bodies trauma. The foreign bodies reported were metallic needle (7; 29%), rubber band (3; 12.5%), pellets (3; 12.5%), bangle glass (2; 8%), glass pieces (2; 8%) "dhaga," wooden twig, wooden thorn, ceramic earthen pot pieces, stapler pin, broomstick, and cracker piece in one case each (1; 4%). Postremoval, the wound healing was uneventful in all patients. Foreign body-related extremity trauma in children is a rare event. It has its own set of characteristics and differential diagnosis. Familiarity with the regional practices and customs is must to establish the circumstances/nature of the foreign body injury. The foreign body should preferably be removed in a well-equipped setting.

Surgical Retrieval of an Impaled Tapestry Needle from the True Pelvic Cavity of a Child-An Unusual Case Report

Introduction:

Impalement injuries of pelvis have been reported in children but are uncommon. Impalement could be associated with injuries to deep organs, wound contamination, crush injuries, and in certain instances, can even be fatal.

Case Report:

We present a bizarre case of a 2-year-old female child who presented to us with a tapestry needle embedded in the true pelvic cavity after a history of fall on the buttock while playing at home. The impaled needle was eventually successfully extracted surgically using the modified Stoppa’s approach and the post-operative period was uneventful. We also briefly review the literature surrounding such unusual injuries and discuss tips and tricks regarding the surgical technique in such cases.

Conclusions:

In impalement injuries, adequate analgesia, tetanus prophylaxis, antibiotics, and immobilization must be given initially followed by meticulous pre-operative planning in the form of radiographs and computed tomography(CT) scans. Minimally invasive CT-guided extraction of needle can be attempted by an experienced interventional radiologist when there is no significant risk of damaging neighboring vital organs or neurovascular structures. The surgical approach if an open approachis decided must be chosen wisely; backup may be needed from an abdominal surgeon, urologist, or gynecologist in certain cases.

Light Control of Insulin Release and Blood Glucose Using an Injectable Photoactivated Depot

In this work we demonstrate that blood glucose can be controlled remotely through light stimulated release of insulin from an injected cutaneous depot. Human insulin was tethered to an insoluble but injectable polymer via a linker, which was based on the light cleavable di-methoxy nitrophenyl ethyl (DMNPE) group. This material was injected into the skin of streptozotocin-treated diabetic rats. We observed insulin being released into the bloodstream after a 2 min trans-cutaneous irradiation of this site by a compact LED light source. Control animals treated with the same material, but in which light was blocked from the site, showed no release of insulin into the bloodstream. We also demonstrate that additional pulses of light from the light source result in additional pulses of insulin being absorbed into circulation. A significant reduction in blood glucose was then observed. Together, these results demonstrate the feasibility of using light to allow for the continuously variable control of insulin release. This in turn has the potential to allow for the tight control of blood glucose without the invasiveness of insulin pumps and cannulas.

Needle detachment in a slim and physically active child with insulin pump treatment

Insulin pump therapy (CSII) is well established in pediatric patients with type 1 diabetes. In childhood diabetes, insulin pump treatment shows considerable advantages such as fewer injections, increased flexibility, fewer hypoglycemic events and lower HbA1c levels. Side effects such as catheter obstruction, technical pump failure, and dermatological complications have been observed, but are rarely reported. The reported patient is a physically very active and slim 10-year-old boy with reduced subcutaneous fatty tissue. After strong muscular activity an accidental rupture of the infusion set and needle detachment occurred in October 2013. X-ray and ultrasound imaging localized the needle in the musculus rectus femoris dexter. The needle was kept in situ and oral antibiotic treatment to prevent inflammatory reaction was prescribed. Repeated ultrasound measurements documented that the needles position had remained unchanged. Steel needle catheters (Sure-T infusion set, 6 mm) positioned in a thin layer of subcutaneous fat tissue of the thigh, combined with intense sports activity can result in a needle rupture and penetration into the muscle. Careful monitoring provides an alternative to surgery and lowers the risk of muscular necrosis. Because of differences in the distribution of subcutaneous fat tissue, an individualized catheter selection is necessary in pump treatment for children and adolescents, requiring a variety of different catheter sets.

Insulin Infusion Sets: A Critical Reappraisal

An insulin infusion set (IIS) is a key component of insulin pumps. In daily practice issues with the IIS appear to be as relevant for a successful insulin therapy as the pumps themselves. The insulin is applied to the subcutaneous tissue via a Teflon(®) (Dupont, Wilmington, DE) or steel cannula. There are intensive discussions about the impact the choice of material for insulin application has on insulin pharmacokinetics. In this review, this factor and others that are known to have an impact on the successful usage of IIS are discussed.