{"classes":[{"categories":[{"measurements":[{"groupId":"OG000","value":"0"},{"groupId":"OG001","value":"0"}]}]}],"denoms":[{"counts":[{"groupId":"OG000","value":"3"},{"groupId":"OG001","value":"5"}],"units":"Participants"}],"description":"If blood calcium has not normalized at 1st postsurgical clinical visit, total calcium level and/or PTH is subsequently measured as necessary. Patient is defined to have permanent hypoparathyroidism if PTH \\< 16 pg/mL and/or activated Vitamin D is required to be symptom free at or after the 6th postoperative month.","groups":[{"description":"Parathyroid gland identification will be performed with PTeye using NIRAF detection technology as an adjunctive tool in patients who undergo total thyroidectomy (TTx) with or without lymph node dissection (LND).\n\nNIRAF Detection Technology: Near Infrared Autofluorescence (NIRAF) detection technology or 'PTeye' consists of a disposable fiber-optic probe that emits non-ionizing radiation from a NIR 785 nm laser source, and also transmits the resulting tissue NIRAF to a photo detector. The 785 nm laser source emits a maximum power of 20 mW. The device is FDA cleared for clinical use in general surgeries and dermatological use (Class 2 device).\n\nAfter surgeon identifies a potential parathyroid gland in the surgical field, the surgeon places the fiber-optic probe of PTeye on suspect tissue and presses the device foot-pedal to activate tissue NIRAF measurement. Auditory beep at high frequency with a Detection Ratio \\> 1.2 is interpreted by device as the suspect tissue being positive for parathyroid.","id":"OG000","title":"NIRAF Detection Technology +"},{"description":"Parathyroid gland identification will be performed with the naked eye of the surgeon without using PTeye - NIRAF detection technology in patients who undergo total thyroidectomy (TTx) with or without lymph node dissection (LND).","id":"OG001","title":"NIRAF Detection Technology -"}],"paramType":"COUNT_OF_PARTICIPANTS","populationDescription":"Only participants with at least 6-months of follow-up were included in this analysis. The majority of follow-ups for thyroid surgery occured nat 5-14 days post-operation and most people do not return for longer follow-up unless they have on-going abnormal labs after that mark.","reportingStatus":"POSTED","timeFrame":"6 months after total thyroidectomy","title":"Postoperative Hypoparathyroidism/Hypocalcemia (Permanent)","type":"SECONDARY","unitOfMeasure":"Participants"}