Glymphatic system – the brain’s lymphatic system

25th June 2021, Dr Chee L Khoo

Where are the lymphatics?

The human circulatory system processes about 20 litres of blood per day through capillary filtration. About 17 litres of the filtered plasma is reabsorbed directly into the blood vessels while the remaining three litres are left in the interstitial fluid. One of the main functions of the lymphatic system is to provide an accessory return route to the blood for that surplus three litres as well as clearance of waste products.…

Newer anti-epileptic drugs in pregnancy – how safe are they?

12th June 2021, Dr Chee L Khoo

More than 50 years ago, there were reports of association between anti-epileptic drugs (AEDs) and birth defects (1). We now have newer AEDs including carbamazepine, lamotrigine, phenytoin and levetiracetam. In 2016, the UK banned valproate use in women who are not in a pregnancy prevention programme.  Despite that, sodium valproate is still widely prescribed in many countries to women of childbearing age.…

AZ Covid-19 vaccine – who shouldn’t have it?

9th June 2021, Dr Chee L Khoo

Covid-19 vaccines

We all know that detailed information relating to Covid-19 is both fluid and rapidly changing. It’s only a mere 3 months since the first reports of thrombosis with thrombocytopaenia (TTS) relating to the administration of the AstraZeneca (AZ) vaccine emerged from Austria. The recommendations as to who should not have the AZ vaccine is constantly being revised as more information comes in from the case reports.…

Maternal gestational weight gain – is there a minimum?

30th May 2021, Dr Chee L Khoo

Obesity and GDM are the most common clinical risks in obstetric practice increasing the probability of a variety of pregnancy related complications compared to women with a normal BMI and normal glucose tolerance. These complications include pregnancy induced hypertension (PIH), emergency caesarean sections (EMCS), pre-eclampsia (PE), post-partum haemorrhage (PPH), large-for-gestational age infants (LGA) and macrosomia.…

SGLT2 inhibitors in heart failure – it’s almost an emergency!

22nd May 2021, Dr Chee L Khoo

Emergency

Clinical inertia in heart failure (HF) treatment means deferred initiation of additional proven beneficial therapy, which ultimately leads to preventable adverse HF events. Hospitalisation for worsening HF is a prognostically significant event in the clinical course of a patient with chronic HF (1,2). Hospitalisation for HF (hHF) identifies patients who are at high risk for subsequent disease progression, requirement for advanced therapies, and cardiovascular death.…

AZ vaccine related thrombosis – when do you suspect?

13th May 2021, Dr Chee L Khoo

Thrombosis with thrombocytopaenia syndrome (TTS)

Thrombosis with thrombocytopaenia syndrome (TTS) has been reported following vaccination with AstraZeneca (AZ) and Johnson and Johnson (JJ) covid-19 vaccines. It is also called VITT (vaccine-induced immune thrombotic syndrome) and VIPIT (vaccine-induced prothrombotic immune thrombocytopenia). It is rare and primarily occurs in those under 50 years old. Although the government recommend that people under 50 years have the Pfizer vaccine, there are people who are in Phase 1A and 1B who can’t and should not wait for the Pfizer vaccine where supplies are limited.…

Breast cancer surgery – is more necessarily better?

13th May 2021, Dr Chee L Khoo

The radical mastectomy introduced by Halsted was the treatment of choice for breast cancer of any size or type, regardless of the patient’s age, for 80 years. Any attempt in surgery less than a radical mastectomy was not widely considered during those years. Subsequent randomised controlled trials designed in 1969 and published in 1973 (1) and 1981 (2) showed that survival rates were equal after radical or breast-conserving surgery (BCS).…

Diabetes and dementia – who is at higher risk?

Dementia

9th May 2021, Dr Chee L Kho

When we think of diabetes-related complications, we usually think about microvascular and macrovascular complications. We don’t usually think about dementia. Type 2 diabetes (T2D) represents an increasing health burden world-wide and its prevalence in particularly higher in elderly population. While epidemiological evidence suggests an increased risk of vascular and Alzheimer’s dementia associated with T2D, the mechanisms underlying the association, however, remain unclear.…

Knee MRI – how reliable is it?

27th April, Spectrum Medical Imaging

Acute knee pain is a pretty common presentation in general practice. In experienced hands, a thorough physical examination can narrow the differential diagnosis to a few common injuries. Often we have to resort to an MRI to confirm our suspicion. How reliable is the MRI diagnosis?

In a novel study to evaluate the reproducibility, repeatability, and agreement of MRI evaluation with the gross pathology examination at operation, in 23 patients undergoing total knee arthroplasty, MRIs were performed just before the surgery (1).…

Monoclonal Ab for rhinosinusitis? – what will they think of next

25th April 2021, Dr Chee L Khoo

chronic rhinosinusitis

Chronic rhinosinusitis is a very common problem in general practice. Despite the “-itis”, infection is not actually the core problem. That is why antibiotic scripts after antibiotics script isn’t always the solution. There is often a significant inflammatory/allergic component in the pathogenesis. Current standard of care consists of intranasal steroids, nasal saline irrigation and short courses of systemic corticosteroids.…

Migraine prophylaxis – finally, something that works

22nd April 2021, Dr Chee L Khoo

migraines

We know migraines as recurrent episodes of headache, associated with symptoms such as nausea, photophobia and phonophobia. While we have agents that can treat acute migraine pretty effectively, many patients with migraines have frequent episodes. These patients with frequent migraines should be offered migraine prophylaxis. Unfortunately, amongst patients with frequent migraines, only 3–13% receive migraine preventive treatment [1,2].…