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At least 469 records · Page 26Linked to original sources
PubMed1997

Thyroid nodules in the follow-up of irradiated individuals: comparison of thyroid ultrasound with scanning and palpation.

In 1974 we began a prospective study of a cohort of 4296 individuals exposed to therapeutic head and neck irradiation during childhood for benign conditions. To define the role of thyroid ultrasonography in following irradiated individuals, we studied a subgroup of 54 individuals. They all had been screened between 1974-1976 and had normal thyroid scans and no palpable nodules at that time. Thyroid ultrasonography, thyroid scanning, physical examination, and serum thyroglobulin measurements were performed. One or more discrete ultrasound-detected nodules were present in 47 of 54 (87%) subjects. There were a total of 157 nodules, 40 of which were 1.0 cm or larger in largest dimension. These 40 nodules occurred in 28 (52%) of the subjects. Thirty (75%) of these 1.0-cm or larger nodules matched discrete areas of diminished uptake on corresponding thyroid scans. The 10 that did not match (false negative scans for > or = 1.0-cm nodules) were the only nodules of this size in 7 subjects. Of 11 nodules 1.5 cm or larger, only 5 were palpable. Serum thyroglobulin correlated to the number (P = 0.04; r2 = 0.10), but not the volume of the thyroid nodules (P = 0.07; r2 = 0.08). We conclude that thyroid nodules are continuing to occur and are exceedingly common in this irradiated cohort of individuals. The results confirm that thyroid ultrasonography is more sensitive than physical examination and scanning. However, thyroid ultrasound is so sensitive and nodules so prevalent that great caution is needed in interpreting the results.

Child↗
PubMed2005

Accuracy of finger-tip palpated tracheostomy tube cuff pressure readings among otolaryngologists.

The tracheal mucosa is very a delicate structure, and pressure-ischaemia problems following the use of cuffed tracheostomy tubes are well documented. Iatrogenic tracheal stenosis is one of the consequences of mucosal ischaemia and is very difficult to treat. In this study the accuracy of finger-tip tested tracheostomy tube cuff inflation pressure, as judged by consultants and non-consultants, was assessed by comparison with manometric pressure readings. The estimated pressure readings from the consultant group were more accurate than those from the non-consultant group, but a high standard deviation and very big difference between low and high readings in both these groups showed the real extent of the problem. Participants who performed 10 or more tracheostomies a year obtained more accurate results. No definite correlation was observed between the readings and the experience of the participants in otolaryngology or the size of the tube used. The authors recommend that instrumental monitoring of cuff pressure be considered good practice among junior otolaryngologists.

Air Pressure↗
PubMed1994

Pregnancy attrition associated with pregnancy testing by rectal palpation.

The objective of this study was to estimate the effect on calving risk of interval from AI date until scheduled date of pregnancy examination. First AI (n = 7105) from 65 dairy herds in the United States and Canada were followed for 294 d to determine whether cows calved. Calving was modeled as a function of the number of days in the interval, herd, season, and breeding at PGF2 alpha-induced estrus by multivariate logistic regression. The main effects of herd and AI following PGF2 alpha-induced estrus were significantly associated with calving rate from first AI. The main effects of interval and season were not significantly associated with calving.

Abortion, Veterinary↗