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This interesting study from Winscosin (
Ito F, et al, Annals of Surgery,
Volume 245(6), June 2007, pp 959-963)
observed that in patients with hyperparathyroidism undergoing surgery,
bilateral internal jugular venous sampling with rapid PTH assay is
safe, effective and provide additional info in localization of diseased
parathyroid gland.
Abstract:
Objective: To determine the utility
of routine perioperative bilateral internal jugular venous sampling of
parathyroid hormone (BIJ PTH) for localization during parathyroid
surgery.
Summary Background Data: Venous sampling for PTH is a useful tool for
parathyroid localization in patients undergoing reoperative surgery for
hyperparathyroidism (HPT). With the development of intraoperative rapid
PTH (ioPTH) testing, internal jugular PTH sampling with ioPTH testing
to guide operative localization has been shown to be possible in
select, difficult cases. However, the value of BIJ PTH for patients
with HPT is unclear.
Methods: Between May 2004 and February 2006, 216 consecutive patients
underwent neck exploration for HPT by one surgeon. Of these, 168
patients had BIJ PTH. Internal jugular venous blood was drawn from both
left and right sides and analyzed for PTH using a rapid PTH assay. BIJ
PTH levels were defined as lateralizing if >5% differences were
observed between the right and left internal jugular vein samples.
Results: Of the 168 patients, 120 (71.4%) had a single parathyroid
adenoma, 15 (8.9%) had double adenoma, and 33 (19.6%) had hyperplasia.
The cure rate after parathyroidectomy was 98.2%. There were no
complications related to BIJ PTH sampling. Sensitivity and positive
predictive value of BIJ PTH for primary hyperparathyroidism were 80%
and 71%, respectively. BIJ PTH was diagnostic in 95 cases (62.9%) in
primary HPT. BIJ PTH successfully localized an abnormal gland in 26 of
45 (57.8%) in patients with negative sestamibi scanning. BIJ PTH was
especially helpful in 18 of 168 (10.7%) cases when intraoperative
peripheral parathyroid hormone did not fall by 50% and BIJ PTH
successfully localized the hyperfunctioning glands.
Conclusions: In patients with HPT, BIJ PTH is safe and effective,
providing additional localization information in the majority of cases.
BIJ PTH is particularly useful in the setting of negative sestamibi
scanning and in complex multigland disease cases.
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Journal Watch :
Endoscopic management of limited attic cholesteatoma. Tarabichi M.,
2004
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Biodun
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