Michael Buchanan,Social affairs correspondent and Adam Eley,BBC News

Family handout
Greg Marshall's Medtronic bosom pump malfunctioned and he died 3 years later aged 26
Dozens of patients were put astatine consequence aft 2 of nan UK's starring transplant centres continued fitting a bosom instrumentality - contempt knowing of concerns it had a higher mortality complaint than its rival product.
Concerns were raised by nan NHS astir nan instrumentality successful 2018. Of nan patients who were subsequently fitted pinch nan mechanical pump, half went connected to dice wrong 3 years.
The mother of Greg Marshall - 1 of nan patients who received nan instrumentality aft concerns were known and who subsequently died - told america she was "disgusted and appalled".
The BBC has besides learned that starring cardiologists astatine some hospitals were paid consultants for nan device's manufacturer. The hospitals were alert of this.
Both hospitals - nan Freeman successful Newcastle and Harefield successful London - continued to usage nan pump for years, and questioned nan reliability of nan information flagged by nan NHS. The pump's manufacturer, Medtronic, eventually withdrew it connected safety grounds.
Patients pinch a weakened heart, who whitethorn beryllium waiting for a transplant aliases deemed not suitable for one, tin beryllium offered a instrumentality called an LVAD, a Left Ventricular Assist Device. It helps nan bosom pump humor astir nan assemblage and, for galore patients, this is their only chance of endurance until a transplant becomes available.
The instrumentality is implanted into nan heart, pinch an outer ligament coming retired of nan assemblage - usually astatine nan abdomen - that connects to a controller and outer batteries.
LVADs person been life-savers for decades and, for a number of years, hospitals had a prime of 2 devices - nan HeartWare HVAD, sold by nan Irish-American institution Medtronic, and nan Heartmate III, sold by US shaper Abbott.

Medtronic
Medtronic withdrew nan instrumentality from waste successful June 2021 "in nan liking of diligent safety"
In October 2018, NHS Blood and Transplant (NHSBT), which oversees transplants successful nan UK, conducted a preliminary audit comparing really nan 2 pumps had performed. A much elaborate study followed successful April 2019.
The results were stark. Of nan 119 patients who had received nan Medtronic device, 45% - aliases 54 patients - had died wrong 2 years. In contrast, conscionable 15% - 15 retired of 97 patients - who were fixed nan Abbott pump had died complete nan aforesaid period. Similarly, nan number of complications - specified arsenic strokes aliases needing a caller pump - were importantly higher for nan Medtronic device. The audit said location were "no important differences" betwixt nan types of patients who received each device.
One of nan UK's six transplant centres, nan Royal Papworth Hospital successful Cambridge, did not hold for nan NHS analysis. It had picked up connected nan increasing world concerns and had stopped utilizing nan Medtronic instrumentality successful February 2018 "after considering nan results of 2 randomised controlled trials", arsenic their clinicians "considered nan Heartmate III arsenic superior".
However, Harefield Hospital continued to solely usage nan Medtronic instrumentality until early 2021, soon aft nan shaper had issued a information notice. The Freeman Hospital continued until June 2021, erstwhile nan shaper withdrew it from waste "in nan liking of diligent safety".
The regulator, nan Medicines and Healthcare products Regulatory Agency (MHRA), continued to o.k. nan instrumentality for usage aft nan 2019 analysis, though it had not been informed by nan NHS of nan data's existence.
Throughout this time, patients fitted pinch nan Medtronic instrumentality continued to dice astatine a higher complaint than those pinch nan Abbott device.
Between October 2018, erstwhile nan first group of NHS information was produced, and June 2021, erstwhile Medtronic discontinued its pump, nan mortality complaint of nan Medtronic instrumentality was two-and-a-half times higher than nan Abbott device, figures released nether nan Freedom of Information Act show.
Forty-nine percent of those who received nan Medtronic instrumentality (39 of 80 patients) successful that clip died wrong 3 years. By comparison, 19% of recipients of nan Abbott instrumentality (20 of 106 patients) died during nan aforesaid timeframe.

Family handout
Greg Marshall (seen present connected nan right, pinch relative Harrison and mother Tessa) suffered acute bosom nonaccomplishment successful 2019
Medtronic decided to retreat nan instrumentality successful June 2021 aft increasing grounds that its pump had a higher wave of strokes and deaths compared pinch different devices. It besides cited a circumstantial malfunction wherever pumps would acquisition a hold aliases neglect to restart aft they were stopped.
Greg Marshall was 1 of nan patients fitted pinch nan Medtronic device, unaware of nan studies astir its effectiveness compared pinch nan rival product. A fresh and patient young man, he had ambitions of joining nan Royal Marines but he suffered acute bosom nonaccomplishment successful 2019.
"It was a monolithic daze to america all," his mother Tessa Marshall remembers.
By June of that year, Greg was offered nan Medtronic instrumentality by nan Freeman Hospital, respective months aft nan first group of NHS information was known about.
His family opportunity they were not presented pinch nan semipermanent risks associated pinch nan device, though an existing diligent was brought successful to show them of its benefits.
Greg agreed to nan surgery, but a important complication successful theatre - which nan family opportunity was ne'er afloat explained to them - led to a stroke. Greg mislaid activity down nan left-hand broadside of his body, and his reside was importantly impaired.
Over time, his wellness slow began to recover, but a twelvemonth later, successful July 2020, nan bosom instrumentality abruptly stopped working. When he tried to restart it, it grounded to move backmost on.
"The pump was not pumping, and he conscionable slow went blue," Tessa says.
Greg was rushed to hospital, but nan instrumentality could not beryllium fixed. He was told he could person it removed, but, terrified of having different stroke, he refused nan surgery.
The surgery instrumentality remained wrong him, switched off, arsenic his bosom continued to usability for a further 3 years, during which clip he was connected a transplant waiting list.
In September 2023, while successful hospital, he unexpectedly went into cardiac arrest. By nan clip Tessa had reached nan Freeman, Greg had died aged 26.
His family, devastated by his loss, opportunity they want answers.
"We said 'Look, Greg, this is nan only action you've got, you person sewage to spell pinch it,'" said Tessa. "I footwear myself now, for not doing immoderate much research."
Three patients whitethorn person died of this failure, nan NHS Trust successful Newcastle told nan Department of Health and Social Care successful a missive seen by nan BBC.
The spot has since told nan BBC nan rumor of nan instrumentality failing to restart successful patients first came to ray successful December 2020 - 5 months aft Greg encountered nan rumor - erstwhile Medtronic published a information notice.

ISHLT
Prof Schueler said he "always worked wrong GMC standards for bully aesculapian practice"
Hospital documents show Greg's responsible wellness master was Prof Stephan Schueler, who until precocious was caput of nan Freeman's cardiothoracic department. Described by a erstwhile workfellow arsenic "king of nan castle" successful nan transplant unit, Prof Schueler had a decade-long narration pinch nan shaper of nan Medtronic device, nationalist records show.
Greg's family opportunity he did not state to them his financial narration pinch nan bosom device's manufacturer, contempt specified a disclosure being a request of nan doctor's regulator, nan General Medical Council (GMC).
In a connection to nan BBC, Prof Schueler said that "there was ne'er a financial inducement nor immoderate net arrangements pinch Medtronic for maine aliases anybody other successful our squad to take 1 instrumentality complete nan other". He did not respond to a nonstop mobility astir what he had told Greg Marshall astir his narration pinch Medtronic but said that he "always worked wrong GMC standards for bully aesculapian practice" and that consenting patients for a process was "carried retired by a full squad of specialised colleagues".
It is communal for clinicians to activity arsenic consultants for medical manufacturer and pharmaceutical companies. Such arrangements are recognised arsenic being mutually beneficial and tin lead to amended outcomes for patients, though location are rules astir what medics request to state to patients.
The Freeman said successful a connection to nan BBC that it offered its "sincere condolences" to Greg's family and it was investigating his case.
It said that, though it was "aware" of nan NHS information successful April 2019, it felt its technological worth was not reliable, and pointed retired that it was not accepted successful immoderate nationalist aliases world technological publication. It said location were different publications astatine that clip which indicated "excellent outcomes" for nan Medtronic device.
Robbie Burns, a diligent typical pinch NHS Blood and Transplant, obtained galore of nan documents relating to nan hospitals' continued usage of nan Medtronic device. He believes location should beryllium an outer investigation into really it was allowed to happen.
"It was wholly preventable," he said.
"If I had been successful nan position of receiving this [Medtronic] device, and looked backmost astatine nan data, I would beryllium going, 'Why connected world did you do this?'"
Prof Schueler said nan Medtronic instrumentality had respective benefits, including being much suitable for children and mini adults. He said nan determination to proceed utilizing nan pump was taken aft soul discussions had considered each nan consequence and benefits carefully.
Another doctor, André Simon, nan head of bosom and lung transplantation and ventricular assistance devices astatine Harefield Hospital, had a likewise long-standing narration pinch HeartWare and Medtronic, going backmost to 2014.
The man who replaced him astatine nan infirmary connected nan separator of westbound London, Dr John Dunning, told nan BBC that Harefield had continued to usage nan Medtronic instrumentality arsenic "it was nan preference" of his predecessor.
Dr Simon, who nary longer useful astatine nan hospital, did not respond to nan BBC's questions. In its statement, nan Harefield said it was "aware" of his activity for Medtronic and that this had been declared successful aggregate papers. The infirmary added that he was 1 of a number of elder group "involved" successful choosing which devices were used, and that "the continued usage of nan [Medtronic device] had corporate support of clinicians astatine Harefield" until nan shaper issued a information announcement successful early 2021.
In abstracted statements to nan BBC, some nan Freeman and Harefield hospitals said their decisions to proceed utilizing nan Medtronic instrumentality were based connected "complex objective decisions" and stressed that location were "no clear grounds" astatine nan clip to judge nan Medtronic instrumentality was importantly inferior to nan Abbott device.
Harefield said it commissioned an outer reappraisal of its services successful 2019 from nan then-chair of nan NHSBT's Cardiothoracic Advisory Group, and this made nary remark connected its action of devices.
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