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University Hospital of Cleveland, Ohio, United States

Source: Douglas Sacha / Getty


For three weeks University Hospitals (UH) has been trying to determine what caused a storage tank holding eggs and embryos to malfunction, and why no one caught the mistake.

Originally it was believed 2,000 eggs and embryos were impacted but it now appears the number is closer to 4,000.

When the incident first happened UH outlined four possibilities for the tank malfunctioning and what they were going to investigate:

  • The storage tank and its individual components, which include a temperature monitoring system; pressure monitoring system; and, computer software
  • Alarm systems
  • Security – both physical and cybersecurity
  • Liquid nitrogen issues (the tanks use liquid nitrogen)
  • Preventive maintenance

In a letter sent to the clients whose eggs and embryos were destroyed, UH explained someone turned off the alarm that would have alerted employees to major changes in the temperatures that protect the specimens.

At noon today UH posted a video to Facebook of CEO Tom Zenty explaining what they learned.



Article Courtesy of WOIO Cleveland 19 News

First and Second Picture Courtesy of Douglas Sacha and Getty Images

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