Comirnaty vaccine – how safe is it? What about myocarditis?

13th September 2021, Dr Chee L Khoo

mRNA covid-19 vaccines

Phase 3 trials have inherent limitations in assessing vaccine safety because of the small number of participants and the sample population is generally reasonably young and healthy. They are often underpowered to identify less common adverse events. For example, the AZ interventional arm had about 11,000 participants and the interventional arm of the Pfizer Comirnaty vaccine had about 23,000 participants.…

DOAC for valvular AF – is that allowed?

11th September 2021, Dr Chee L Khoo

stroke prevention in AF

You may recall when direct acting oral anti-coagulants (DOAC) first came out for treatment of atrial fibrillation (AF). Upon diagnosis of new AF, some GPs were hesitant to initiate a DOAC for the AF but instead refer patients to a cardiologist. There is a danger while waiting to see the cardiologist that the patient may incur a cerebrovascular accident (CVA).…

Delta variant – are the vaccines any good?

real world data

26th August 2021, Dr Chee L Khoo

The Delta variant, first identified in India in December 2020, spread rapidly throughout a mostly unvaccinated country and caused massive numbers of cases, hospitalisations, and deaths. It’s now responsible for the outbreaks spreading across the world. This includes countries that have high vaccination rates. In the UK, the Delta variant has spread rapidly.…

Reducing retinopathy progression – how does fenofibrate work?

21st August 2021, Dr Chee L Khoo

Retinopathy progression

Nothing scares patients with diabetes more than blindness. Although we have many treatment options available for proliferative diabetic retinopathy and macular oedema, diabetes remains the leading cause of severe visual impairment in working-aged adults. Diabetic retinopathy affects one in three people with diabetes. Risk factor control and screening are the cornerstones for retinopathy prevention.…

Rotator cuff tears – do steroid injections work?

14th August 2021, Dr Chee L Khoo

Shoulder pain has to be one of the most common musculoskeletal complaints in general practice. Rotator cuff pathology makes up at least 70% of those cases (1). It is commonly very debilitating, causing pain the whole night, causing significant reduction in function and often last for years. Apart from rest, analgesia, non-steroidal anti-inflammatory drugs, treatment options include physiotherapy, corticosteroid injections and surgical repair.…

Covid-19 vaccines – can we mix and match yet?

8th August 2021, Dr Chee L Khoo

Mix/Match?

We know that the incidence of thrombocytopaenic thrombosis syndrome (TTS) can occur with the AstraZeneca (AZ) Covid-19 vaccines although it is pretty uncommon. What do you do with patients who had TTS with the first jab and it’s now ready for the next jab? Obviously, they can’t have the second jab with AZ.…

Covid-19 and pregnancy outcomes

7th August 2021, Dr Chee L Khoo

It is always difficult for pregnant women to decide whether to have the Covid-19 vaccine during pregnancy. Understandably, they are concerned about the safety of the vaccine administered during pregnancy. When the pandemic started last year, there were some studies which suggest that Covid-19 during pregnancy is associated with “significantly” poor maternal and offspring outcomes.…

Muscle strain – do muscle relaxants work?

28th July 2021, Dr Chee L Khoo

Muscle strain

Muscular strains especially those around the spine (low back or neck pain) are very common presentations in general practice. Apart from analgesics, muscle relaxants are commonly prescribed. Recommendations for the use of muscle relaxants have, however, conflicted between international clinical practice guidelines for low back pain (1,2). The US guideline recommends non-benzodiazepine antispasmodics as the drug of choice for acute low back pain (3) the Belgian guideline discourages such use (4) and the UK guideline does not make a recommendation (5).…

AZ jab 2 at 6 weeks – should we?

23rd July 2021, Dr Chee L Khoo

AZ Jab 2

It’s all too confusing. And annoying. They keep releasing updates in the lay media and says “see your GP to discuss” but did not update us. You will recall that 2 weeks ago the recommendations to have the second AstraZeneca vaccination moved to 6 weeks after the first vaccination in areas with the outbreak which is pretty much all of Sydney.…

Preventing Type 1 Diabetes – are we there yet?

14th July 2021, Dr Chee L Khoo

T1D

The risk for people in the general population of developing type 1 diabetes (T1D) is about 1 in 300. For those who have a family member with T1D, the risk is 1 in 20. T1D progresses over 3 stages. In stage 1, two or more autoantibodies are already slowly attacking the β-cells. This can occur years before clinical diagnosis of T1D.…

The twincretins are here

11th July 2021, Dr Chee L Khoo

twincretin

3 years ago we previewed the highly anticipated drug LY3298176, a novel dual GLP1 and GIP receptor agonist which activate both GLP1 and GIP receptors in islet cells when we look at twincretins. In healthy human subjects, LY3298176 caused weight loss and improved glucose tolerance. In subjects with T2D, LY3298176 reduced fasting glucose, glucose excursions and body weight with increasing doses.…