Dr Isyaka Mamman, 85, had been suspended by medical watchdogs for lying about his age and was sacked but then re-employed at Royal Oldham Hospital before Shahida Parveen’s death. He was responsible for a number of critical incidents before the fatal procedure in 2018. Mamman will be sentenced on Tuesday after pleading guilty to grossly negligent homicide. The judge told him to “prepare” to spend time in prison. Mrs Parveen, 48, went to hospital with her husband, Khizar Mahmood, for investigations into a possible myeloproliferative disorder in September 2018, Manchester Crown Court heard. She was advised to have a bone marrow biopsy, which was assigned to Mamman. He failed to obtain a sample on his first attempt and instead performed an “extremely risky” procedure, despite the objections of the patient and her husband. The procedure required him to take a sample from Ms Parveen’s sternum but, after using the wrong needle, he missed the bone and punctured her pericardium, the sac containing the heart. As a result, it caused massive internal bleeding. Mrs Parveen lost consciousness as soon as the needle was inserted, prompting her husband to leave the room shouting: “He killed her. I told him to stop three times and he didn’t listen.” The crash team arrived but Ms Parveen was confirmed dead later that day. ‘True age’ is a matter of ‘controversy’ The Nigerian-born doctor had used various dates of birth and left his previous job due to “poor performance”. Maman, from Royton, Oldham, had a medical degree in Nigeria in 1965 and had been working in the UK since 1991, the court heard. From 2004 until Ms Parveen’s death, she worked at Pennine Acute Hospitals NHS Trust. However, his “true age” is a matter of “dispute”, the court ruled, as his birthplace did not have a birth registration system. Throughout his professional life, he gave many different dates of birth. Read more: GP workforce faces ‘worrying workload’ Doctors demand 30% pay rise as some talk of strikes Couple left injured after nine-hour A&E wait During his medical training, he dated September 16, 1936, which meant he was 21 when he began his medical training and 81 at the time of the fatal incident. He later told the NHS his year of birth was 1941, indicating he started his medical degree at 16. As he approached retirement, he again changed his date of birth, this time claiming it was October 1947. The date, meaning he started his degree at the age of 10, was used in his application for naturalization as a British citizen in 2001. Three years later, he was found guilty of serious professional misconduct by the General Medical Council and suspended for 12 months for lying about his age. Follow The Daily podcast on Apple Podcasts, Google Podcasts, Spotify, Spreaker “Horrible list of failures” Complaints have also been made against him in the past, with one patient saying he used “excessive force” during a bone marrow biopsy in 2015. Although the patient was assured that he could only perform “light duties” as a result of the complaint, there was another clinical incident in the same year which resulted in another patient being seriously injured. Again, this was caused during a bone marrow biopsy and involved inserting a needle in the wrong place. The patient survived but has been left permanently disabled. A lawyer said it was clear Mamman was a “failed” doctor but he “shouldn’t have been allowed to be in the position he was”, describing the selection as a “traumatic catalog of failures” by the hospital trust.
