Unomedical reference number (b)(4) event occurred in the united states on (b)(6) 2024, it was reported that 10-years-old female child patient had insulin flow block around 2:00 am resulting in no insulin for three hours.Her blood glucose level at the time of incident was 370 mg/dl and ketones were 1.8 mmol/l which resolved to 0.1 mmol/l in 1.5 hours after changing infusion set.No further information was available.