General internal medicine: acquiring clinical acumen from bedside to front door with opportunities for undergraduate and postgraduate training.

A general physician's training and experience enables them to manage a variety of acute and chronic medical conditions with multi-system pathology, while specialising in one specific area of medicine. In every illness there are other problems outside the specialty, requiring the wider expertise of the generalist as patients have multiple comorbidities and the multitude of disease pathology presenting are quite complex requiring a multi-faceted approach. The horizons of general internal medicine have broadened with a wide landscape of acute illnesses that are now being admitted under general medicine which is the path of least resistance. As we strive relentlessly while working on the ward at the bedside and in acute portals, we ought to remind ourselves of what are the attractions of general internal medicine and lead by example for the undergraduates and postgraduate doctors in training who see us as role models for doing clinical medicine, teaching, training and research.

Optimising renal risk parameters in type 2 diabetes mellitus: Perspectives from a retinal viewpoint.

Diabetic retinopathy and nephropathy share pathophysiological mechanisms and there is a defined correlation between the severity of both these microvascular complications from suboptimal glycaemic control. The reno-protective properties offered by sodium-glucose co-transporter-2 inhibitors and glucagon-like peptide-1 receptor agonists should be applicable to diabetic retinopathy as well. However, in patients with pre-existing diabetic retinopathy, sudden improvement in glycaemic control is well documented to cause early worsening of the changes in the retina that is usually transient. This paradoxical phenomenon tends to occur with longer duration of diabetes, higher HbA1c at the outset, rapid improvement of glucose levels and the magnitude of HbA1c reduction with addition of more agents to tighten metabolic control. Interestingly, this progression of pre-existing diabetic retinopathy is not quite observed with newer sodium-glucose co-transporter-2 inhibitors. This article discusses potential further areas of future research where mechanisms of renal protection can be translated to the retina.

Lesson of the month 2: Autoimmune sequelae of anti-GAD antibodies - thinking outside the box.

A 52 year-old female with no significant medical problems presented with left-sided weakness, unsteady gait and speech disturbance. It was thought that she had neuro-inflammation and she remained clinically stable. Several years later, she was diagnosed with latent autoimmune diabetes of adulthood. Her neurological symptoms deteriorated and she was admitted into hospital. The cerebrospinal fluid was normal, as were an array of blood tests. Imaging tests, including magnetic resonance imaging, computerised tomography and positron emission tomography scans were normal. However, her anti-glutamic acid decarboxylase antibody serum level, which had been taken in the diabetes outpatient clinic, returned at 2,000,000 IU/mL (normal range 0-10). This led to the diagnosis of glutamic acid decarboxylase (GAD) positive cerebellar ataxia. She was treated with plasma exchange and intravenous immunoglobulins and over next 12 weeks her symptoms improved. Our case highlights the need for appropriate treatment of patients with GAD positive cerebellar ataxia to achieve good outcomes.

Novel concepts of statin therapy for cardiovascular risk reduction in hypertension.

Hypertension is associated with an increase in cardiovascular events. Pathophysiological mechanisms of this include endothelial damage/dysfunction, inflammatory activation, insulin resistance, platelet activation and alterations in the coagulation cascade leading to a prothrombotic state. Dyslipidaemia acts synergistically with hypertension in increasing cardiovascular risk. HMG CoA reductase inhibitors (statins) are lipid-lowering drugs and more recently have been shown to have a significant pleiotropic effect on endothelial function, inflammation, platelet activation and coagulation. Statins affect the whole pathophysiology of atherogenesis from deposition to plaque rupture and thrombogenesis because of its pleiotropic effects. Therefore it is intuitive that statins may be of benefit in hypertensive patients with conventionally normal lipid levels by preventing the pathological effects of hypertension. There is an increasing clinical evidence base for statins use in patients with hypertension. In this article, the novel pleiotropic and conventional mechanisms of statins, and clinical data of statin therapy in patients with hypertension are reviewed.

Diabetes mellitus and atrial fibrillation: perspectives on epidemiological and pathophysiological links.

Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia, which is also associated with a substantial risk of mortality and morbidity from stroke, thromboembolism, heart failure and hospitalisations. On a epidemiological basis, diabetes mellitus is commonly associated with AF. Nonetheless, AF is also associated with vascular disease and hypertension, which are themselves intimately linked to diabetes. Indeed, the precise pathophysiological and clinical relationships between AF and diabetes mellitus are not completely understood. What we do know is that both diabetes and AF are individually bad for our patients, and the presence of both requires aggressive management strategies.

Splenic abscess as a potential initial manifestation of quiescent infective endocarditis in a patient with bronchopneumonia.

A 78-year-old woman presented to the acute medical unit with a productive cough, dyspnoea and decreased appetite of 4 days duration. Initial assessment supported a diagnosis of right-sided community-acquired pneumonia and she was started on antibiotics. In view of the clinical finding of splenomegaly, she had an ultrasound and, subsequently, a CT of the abdomen, which revealed a large splenic abscess. Pending cultures from a sample obtained from percutaneous drainage of the abscess, she was started on intravenous meropenem. The initial echocardiogram did not suggest any evidence of endocarditis. The pus drained from the abscess on cultures was subsequently positive for Staphylococcus aureus. An MRI of the spine excluded discitis as a source of infection. Owing to a high index of clinical suspicion a repeat echocardiogram was undertaken after 1-week, which confirmed acute endocarditis. The patient was treated with intravenous antibiotics for 6 weeks with improvement in clinical, radiological and biochemical parameters.

The impact of improved glycaemic control with GLP-1 receptor agonist therapy on diabetic retinopathy.

Rapid improvement in glycaemic control with GLP-1 receptor agonist (RA) therapy has been reported to be associated with significant progression of diabetic retinopathy. This deterioration is transient, and continuing GLP-1 RA treatment is associated with reversal of this phenomenon. Pre-existent maculopathy, higher grade of retinopathy and longer duration of diabetes may be risk factors for persistent deterioration.

Challenges of emerging adulthood-transition from paediatric to adult diabetes.

Diabetes mellitus is a complex condition with far reaching physical, psychological and psychosocial effects. These outcomes can be significant when considering the care of a youth transferring from paediatric through to adult diabetes services. The art of mastering a smooth care transfer is crucial if not pivotal to optimising overall diabetic control. Quite often the nature of consultation varies between the two service providers and the objectives and outcomes will mirror this. The purpose of this review is to analyse the particular challenges and barriers one might expect to encounter when transferring these services over to an adult care provider. Particular emphasis is paid towards the psychological aspects of this delicate period, which needs to be recognised and appreciated appropriately in order to understand the particular plights a young diabetic child will be challenged with. We explore the approaches that can be positively adopted in order to improve the experience for child, parents and also the multi- disciplinary team concerned with the overall delivery of this care. Finally we will close with reflection on the potential areas for future development that will ultimately aim to improve long-term outcomes and experiences of the young adolescent confronted with diabetes as well as the burden of disease and burden of cost of disease.