Scientists Pinpoint the Day of the Week nEVER to Have Surgery Patients confessed to medical facility for surgery a specific day of the week are substantially more likely to pass away, a significant research study suggests. Those undergoing both emergency and optional operations-such as hip and knee replacements-had a 10 percent higher threat of death if they went under the knife on a Friday, compared to the beginning. Experts have long observed the so-called 'weekend impact'-worse post-surgical outcomes for ops done on Friday, due to a lack of more senior personnel on Saturdays and Sundays too less additional services for clients like scans and tests. Patients have actually also reported fearing that staff may be more exhausted towards completion of the week, increasing the chance of possible hazardous mistakes being made in their care. But the US researchers behind the brand-new study think while a 'weekend effect' does exist, the higher death rates observed may not constantly be a reflection of poorer care. Instead, they claim it might be due to patients who need treatment closer to the weekends being most likely to be sicker and frailer. But they admitted a lack of senior staff operating on Fridays, compared with Mondays, and a resulting 'difference in proficiency' might also 'play a function'. In the study, researchers at Houston Methodist Hospital in Texas, analysed information from 429,691 patients who went through one of 25 typical surgical procedures in Ontario, Canada, in between 2007 and 2019. Scientists discovered both emergency and non-emergency operations - such as hip and knee replacements - were practically 10 percent more deadly when performed near the weekend compared to the beginning of the week Patients were divided into two groups - those who went through surgery on the Friday or the day before a public vacation. The 2nd had their operation on the Monday or post-holiday.