Fish oil supplements are ineffective for treating dry eyes
Omega-3 fatty acids or ‘fish oil’ supplements are no more effective than inactive olive oil capsules for relieving dry eye disease. Some patients take fish oil supplements for this common problem, but this new evidence suggests that they consider alternatives.
Dry eye disease is a common long-term inflammatory condition causing discomfort, and disturbances including blurred vision. Treatment of symptoms includes using artificial tears. Although guidelines recognise the lack of exist...
Balanced electrolyte solutions give marginal benefit over saline for very ill patients
About 14% of critically ill patients receiving electrolyte-balanced crystalloids either developed kidney failure, needed kidney-replacement therapy or died compared with 15% receiving normal saline. This small but statistically significant benefit was only apparent when combining outcomes; there was no difference between fluids for the three individual outcomes analysed separately.
A solution of 0.9% sodium chloride (normal saline) is the most commonly used intravenous (IV) fluid, but it can ca...
Aspirin may be a follow-on option to prevent blood clots, starting five days after hip or knee surgery
In a recent trial, switching to low-dose aspirin was just as effective at preventing blood clots after joint replacement surgery as continuing the anti-clotting drug rivaroxaban. Six per 1,000 people taking aspirin experienced a blood clot, compared with seven per 1,000 taking rivaroxaban. Three to five per 1,000 patients experienced major bleeding with either drug.
Rivaroxaban or similar drugs are usually prescribed for two or five weeks after knee or hip surgery, respectively, to reduce the r...
Transfusing blood close to its use-by date does not increase deaths in critically ill adults
Transfusing more recently-collected red blood cells does not improve the chance of survival for critically-ill people who need blood transfusions, compared with blood that has been stored for longer.
This large international study included almost 5,000 critically ill people in intensive care units. Participants were transfused with either the freshest compatible blood available (mean storage 11.8 days) or the oldest compatible stored blood within its use-by date (mean storage time 22.4 days).
Aspirin reduces a woman’s chance of developing pre-eclampsia in pregnancy
Giving low dose aspirin to high-risk women reduced their risk of pre-eclampsia before 37 weeks of pregnancy. Preterm pre-eclampsia developed in 1.6% of women given 150mg aspirin daily compared with 4.3% who took a placebo.
Pre-eclampsia is a condition which can harm mother and baby. In the mother, it causes high blood pressure and protein in the urine, which can show in pregnancy after 20 weeks. Women with risk factors, such as previous pre-eclampsia, diabetes or high blood pressure, are often ...
Head position after acute stroke does not affect disability outcomes
Lying flat for 24 hours after a stroke is no better than sitting up at an angle of at least 30 degrees. These differences in early head position did not affect people’s levels of disability or survival to 90 days, which was more than 92% in both groups. It had been thought that the head down position might increase the chance of pneumonia, but in this trial, the rates were also similar for people cared for in either position.
The results of this large international randomised controlled t...
Resistance training may prevent obese older people becoming frail when losing weight
Combining resistance training with aerobic exercise increased physical function in older, obese adults who were following a weight loss programme. Functional improvements, such as the speed to stand from a chair or to climb stairs, were greater with combination training (21%) than with either type of exercise performed alone (14%).
This randomised controlled trial assigned 160 obese adults in the USA (aged over 65, mostly educated white females) to the different types of exercise for six months...
Treating subclinical thyroid dysfunction in pregnancy probably has no benefit
Testing for and then treating pregnant women with mild or “subclinical” underactive thyroid did not improve pregnancy outcomes, newborn baby outcomes, or the child’s IQ at three to five years.
A clearly underactive thyroid (clinical hypothyroidism) in pregnancy has been linked with various adverse outcomes for the mother and baby, including pre-eclampsia, preterm birth, congenital defects and neurodevelopmental delay. This needs treatment. However, there has been debate around...
Mechanical clot removal for stroke reduces disability at two years
Timely mechanical removal of the blood clots from inside vessels in the brain after a stroke reduces disability and improves quality of life at two years compared with usual care.
Over a third of those in the thrombectomy group had good functional outcome compared with less than a quarter of the standard care group who received clot busting drugs. This was similar to the results at 90 days and was associated with improved quality of life in terms of self-care and mobility. Findings came from a ...
Very strict blood sugar control in critically ill children provides no benefit
Strict control of blood sugar levels for critically ill children in ICU with high blood sugar did not increase the number of days they spent outside of ICU in the first month.
The trial was stopped early as more infections and very low glucose levels were recorded in the strict control group.
This trial found that using insulin to control blood sugar to within 4.4 to 6.1 mmol/L, rather than 8.3 to 10mmol/L, in critically ill children made no difference to the number of days they spent in the i...