Researchers examined hospital data on 4.1 million elective surgeries performed in public hospitals between 2008 and 2011.
Results showed that risk of mortality increased steadily throughout the week. Surgeries performed on a Friday were associated with 44 percent higher morality, and weekend procedures associated with 82 percent higher mortality, than those performed on a Monday.
A study presented at the Heart Failure Congress 2013 also showed higher mortality rates for patients admitted later in the week.
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