The Silent Power of Glycaemic Control in Wound Healing: Lessons from the Ward
Year: 2025
Type: article
Abstract: THE SILENT POWER OF GLYCAEMIC CONTROL IN WOUND HEALING: LESSONS FROM THE WARD By: Dr. Chukwuma Ernest Nnanyereugo Affiliation: Rivers State University Teaching Hospital | (1) Ernest Chukwuma | LinkedIn INTRODUCTION In the everyday rhythm of hospital rounds, few things are as frustrating to both doctors and patients as wounds that refuse to heal. Especially in diabetic patients, wounds that seem surgically sound can stagnate for weeks. As a young doctor rotating through the surgical unit, I encountered this firsthand in a case that changed how I view metabolic health in relation to surgical outcomes. A WOUND THAT WOULDN’T HEAL We had admitted a 65-year-old diabetic man with a severe crush injury to his left foot after a road traffic accident. He underwent successful debridement and split-thickness skin grafting. Everything was done right: sterile technique, antibiotics, alternate dressing, nutritional supplements. Yet, the graft wouldn't take. The wound lingered, raw and reluctant. We were puzzled.That was until the endocrinology team reviewed him. His HbA1c was 13.1% – a glaring sign of chronically uncontrolled diabetes. Insulin therapy was initiated, and within days, the wound began to respond. The graft adhered. The foot, once headed toward amputation, was salvaged. THE BIOLOGY BEHIND THE DELAY This experience underscored an essential lesson: glycemic control isn't just a medical number—it’s a surgical determinant.When blood sugar is poorly regulated, the immune response falters, angiogenesis is impaired, and collagen synthesis becomes dysfunctional. High glucose levels serve as a substrate for infection and inflammation. In simple terms, a poorly controlled diabetic patient has a hostile wound environment no matter how good the surgical intervention is. One striking insight I gained from discussions with endocrinologists is that hyperglycemia affects every layer of wound healing. Neutrophil function is compromised, oxidative stress increases, endothelial cells become dysfunctional and fibroblasts don’t work effectively. Even angiogenesis- the formation of new blood vessels necessary for wound repair- is blunted (Guo & Dipietro, 2010). This is not just academic. In real life, it means slower healing, higher risk of infection, longer hospital stays and tragically more amputations. According to the International Diabetes Federation (2023), diabetes-related foot complications are among the leading causes of lower limb amputations globally, many of which could be avoided with better glycemic control. BEYOND THE OPERATING TABLE Across wards in Nigeria and any parts of the world, surgical teas work under immense pressure to heal patients. Yet, we sometimes forget that wounds are not just skin-deep. They reflect the body’s internal harmony- or lack thereof. Blood sugar control is not the glamorous part of surgery, but it may be the most vital. Wounds that don’t heal in diabetic patients are not just clinical failure- they are systemic reflections of neglected metabolic health. In surgical training, the emphasis is often placed on scalpel precision, sterility, suturing techniques and post operative care. But these are only part of the healing equation. Healing requires more than stitches and dressings; it demands an internal environment that is conducive to repair. REAL-LIFE NARRATIVES This realization took deeper root as I began to encounter more patients whose wounds defied logic. I began to see a pattern that textbooks often gloss over- one where the success of surgery was not solely in the hands of the surgeon but woven into the larger, more complex fabric of a patient’s metabolic and social reality. One patient, a 67 year old retired schoolteacher who presented with a chronic diabetic foot ulcer that had progressed to osteomyelitis. Despite multiple rounds of antibiotics and meticulous wound care, the infection persisted. She had a longstanding history of type 2 diabetes but had been rationing her insulin due to rising costs. Each time we dressed her wound, the smell of necrotic tissue served as a sobering reminder that the issue was not microbial- it was metabolic and systemic. When she was finally placed on a consistent insulin regimen through a hospital based subsidy program, her healing accelerated noticeably. Then there was this case of a young man only 31- who suffered a burn wound while fixing an electrical panel. Initially, the wound was superficial, but it soon became clear that healing was abnormally slow. He revealed reluctantly that he had been diagnosed with type 1 diabetes but hadn’t followed through with his treatment plan. He feared social stigma and saw insulin as a lifelong burden he wasn’t ready to accept. His wound eventually healed after he embraced treatment and joined a diabetes support group. His journey reminded me that healing is often emotional as well as biological. Perhaps the most heartbreaking case was that of a 41 year old entrepreneur, full of life and ambition who sustained a motorcycle fall. What began as a routine dressing quickly escalated into a prolonged hospital stay complicated by cellulitis, osteomyelitis and eventually sepsis. He confided in me during my post rounds that he had stopped taking his antidiabetic medications because he was prioritizing his child’s fees. Despite the best efforts of our team, he lost part of his lower limb. The emotional impact of his amputation was immense for him and us as caregivers. Other cases I witnessed included: an elderly woman with a diabetic foot ulcer that deteriorated into osteomyelitis; a middle-aged teacher whose surgical wound dehisced after laparotomy; a young man with a healing resistant burn wound. The common denominator? Poor glycemic control. I also recall a vibrant young trader, only 42, who came in with minor laceration after a fall. What should have healed in ten days became a month-long admission, complicated by cellulitis and sepsis. He admitted he had stopped his diabetic medication due to financial constraints. No amount of surgical skill could replace what consistent insulin might have achieved. These patients, beyond their blood sugar readings, taught me to look at wounds differently. Each scar was not just surgical; it was social, economic and educational. THE NATIONAL LANDSCAPE In Nigeria, the prevalence of diabetes is growing rapidly, yet many patients remain undiagnosed or poorly controlled. A 2021 study by Olamoyegun et al revealed that only about 30 % of known diabetics in a tertiary Nigerian hospital had adequate glycemic control. This is a sobering statistic- and one that demands urgent attention from all cadres of healthcare professionals. Compounding the problem is the limited availability and affordability of insulin. In many rural and suburban centers, glucose monitoring is sporadic. Patients often rely on herbal medications or myths passed from family members. Here, wound healing is not just a medical process but a battle against deeply ingrained social beliefs and financial barriers. BRIDGING SURGERY AND METABOLISM As a surgeon-in-training, this knowledge reshaped my mindset. I began to pay closer attention to patient glucose levels, not just before surgery but throughout recovery. I started trying to collaborate with seniors and colleagues from endocrinology. I found myself asking: How can I expect a wound to heal in a body that is metabolically inflamed? But the implications go beyond hospitals. There is a pressing need for public health interventions that integrate surgical care with chronic disease management. Diabetic education, affordable insulin, regular screenings and diet counselling must become embedded into surgical care pathways. A wound is never just a wound. It is a mirror into a person’s physiology and often their socioeconomic condition. There is also a need to empower nurses and allied health professionals with training in glycemic surveillance and nutritional support. Multidisciplinary teamwork is not a luxury- it is a necessity. Physical therapists, dieticians and diabetes educators must be involved early, especially in high-risk surgical patients. This holistic approach improves not only healing but quality of life. LESSONS FROM GLOBAL PRACTICES Other countries have taken impressive strides. In Sweden, the national diabetes registry mandates perioperative glucose monitoring in known diabetics. In the U.K., enhanced recovery protocols include mandatory endocrinology review for diabetics undergoing major surgery. In India, some tertiary centers have adopted color coded charts to track glycemic trends perioperatively, ensuring that nurses and surgeons remain alert to outliers. Closer to home, wound care centers in South Africa and Kenya are pioneering multidisciplinary wound care clinics. These integrate surgical care, endocrinology, dietary support and physiotherapy. They have developed wound healing clinics that focus not just on debridement but on diet, counselling and glucose monitoring. Notably, the University of Cape Town’s Diabetic Limb Salvage Initiative reduced major amputation rates by 25% over five years through aggressive glucose monitoring and team-based care. Furthermore, Ghana has implemented community health outreach using mobile clinics that provide glucose checks and foot care education. These are cost effective, culturally-sensitive and utilizing local health workers and traditional media to raise awareness. The World Health Organization (WHO) has also developed the Package of Essential Non communicable (PEN) Interventions for Primary Health care in Low-Resource settings which includes diabetes screening, counselling and basic medication protocols which can be embedded into existing surgical pathways. Nigeria can adapt these methods even in resource-constrained settings. A simple checklist that prompts surgical teams to check fasting blood sugar on postoperative day 3, or a ward protocol that encourages nurse-led daily glucose
Author: Chukwuma Ernest Nnanyereugo
Language: English
Subfield: Endocrinology, Diabetes and Metabolism
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W6949743412
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