scholarly journals Assessment of normal reference values for thyroid uptake of technetium-99m pertechnetate in a Saudi population

2021 ◽  
Vol 41 (2) ◽  
pp. 86-90
Author(s):  
Awad Alshahrani ◽  
Gulam M. Syed ◽  
Altaf H. Khan ◽  
Shah P. Numani ◽  
Abdulaziz Alnaim ◽  
...  
Keyword(s):  
Reference Range ◽  
Care Center ◽  
Tertiary Care ◽  
Standard Technique ◽  
Thyroid Function Tests ◽  
Cross Sectional ◽  
Normal Reference Range ◽  
Technetium 99M ◽  
Normal Reference ◽  
Thyroid Uptake

BACKGROUND: Thyrotoxicosis is a common medical problem. Thyroid nuclear imaging with either I 123 or technetium-99m (Tc-99m) pertechnetate are used to determine the cause. Although I 123 has been the standard technique, Tc-99m pertechnetate is now commonly used, acceptable and easier to perform. The commonly used normal value of Tc-99m pertechnetate is 1–4%, but lower normal values have been reported in different populations. OBJECTIVE: Determine normal reference range of Tc-99m pertechne-tate thyroid uptake for thyroid scintigraphy in Saudi Arabia. DESIGN: Retrospective, cross-sectional. SETTING: Nuclear medicine service at tertiary care center in Riyadh. PATIENTS AND METHODS: We used data from biochemically euthyroid patients who underwent a thyroid Tc-99m pertechnetate scan while having parathyroid scintigraphy for hyperparathyroidism between April 2009 to April 2019. Medical records and biochemical thyroid function tests were reviewed and Tc-99m pertechnetate thyroid uptake values were determined for each patient. MAIN OUTCOME MEASURES: Thyroid uptake of Tc-99m pertechne-tate in euthyroid patients. SAMPLE SIZE: 167 RESULTS: The mean and median uptake of Tc-99m pertechnetate in euthyroid patients were 0.86% and 1.0%, respectively, and the inter-quartile range was 0.0–1.0%. The normal reference range in the study population was 0.2-2%. Thyroid uptake inversely correlated with age in females (r=−0.37, P <.001), males (r=−0.46, P =.001), and for all patients (r=?0.39, P <.0001). CONCLUSION: The range for normal thyroid Tc-99m pertechnetate was lower than the standard 1-4% range. Moreover, uptake decreased with age. Further studies are needed to establish the normal age-adjusted uptake for the thyroid Tc-99m pertechnetate scan. LIMITATIONS: Single center and retrospective. CONFLICT OF INTEREST: None.

Evaluation of normal reference range for thyroid uptake of technetium-99 m in a single centre UK population

2017 ◽  
Author(s):  
Mavin Macauley ◽  
Mohamed Shagwi ◽  
Kim Howe ◽  
Andrew Curry ◽  
Elizabeth Howell ◽  
...  
Keyword(s):  
Reference Range ◽  
Single Centre ◽  
Normal Reference Range ◽  
Normal Reference ◽  
Thyroid Uptake

scholarly journals Normal Reference Range for Serum TSH, Free T4, Total T4, and Total T3 on Roche® Platforms in Basrah, Iraq

2021 ◽  
pp. 147-155
Author(s):  
Nassar Taha Alibrahim ◽  
Samih Abed Odhaib ◽  
Ali Hussain Alhamza ◽  
Ammar Mohammed Saeed Almomin ◽  
Ibrahim Abbood Zaboon ◽  
...  
Keyword(s):  
Thyroid Function ◽  
Reference Range ◽  
Cross Sectional Study ◽  
Reference Intervals ◽  
Specific Reference ◽  
Thyroid Function Tests ◽  
Free T4 ◽  
Cross Sectional ◽  
Normal Reference Range ◽  
Tertiary Center

Background: Thyroid function tests are mandatory in clinical practice because symptoms and signs are not reliable to discriminate between various types of thyroid disease. Aim: The aim of this study was to determine assay-specific reference range for serum free T4, total T4, total T3 and TSH among healthy non-pregnant adult cohort for Roche® platforms in Basrah (Southern Iraq) from single laboratory in a tertiary center using indirect approach of the available data. Methods: A Cross sectional study for non-pregnant adults 19 years and above. Sera were analyzed by using cobs e411 for thyroid functions tests. Results: Total enrolled persons were 10,078. The 95% reference intervals for TSH were 0.20-6.50 μIU/mL, which increased with age though not linear, for free T4 were 0.8-1.70 ng/dL, for total T4 were 3.78-15.33 μg/dL, and for total T3 were 0.80-2.50 ng/mL. Colcusion: Cobs e411(Roche® analytical platform) analyzer reference range for thyroid function  cannot be applied for Iraqi population .

Prehospital Intubations Are Associated with Elevated Endotracheal Tube Cuff Pressures: A Cross-Sectional Study Characterizing ETT Cuff Pressures at a Tertiary Care Emergency Department

2021 ◽  
pp. 1-4
Author(s):  
Ruo S. Chen ◽  
Laurel O’Connor ◽  
Matthew R. Rebesco ◽  
Kara L. LaBarge ◽  
Edgar J. Remotti ◽  
...  
Keyword(s):  
Endotracheal Tube ◽  
Cuff Pressure ◽  
Care Center ◽  
Tertiary Care ◽  
Cross Sectional Study ◽  
Endotracheal Tube Cuff ◽  
Cross Sectional ◽  
Tube Cuff ◽  
Respiratory Therapists ◽  
Significant Difference

Abstract Introduction: Emergency Medical Services (EMS) providers are trained to place endotracheal tubes (ETTs) in the prehospital setting when indicated. Endotracheal tube cuffs are traditionally inflated with 10cc of air to provide adequate seal against the tracheal lumen. There is literature suggesting that many ETTs are inflated well beyond the accepted safe pressures of 20-30cmH2O, leading to potential complications including ischemia, necrosis, scarring, and stenosis of the tracheal wall. Currently, EMS providers do not routinely check ETT cuff pressures. It was hypothesized that the average ETT cuff pressure of patients arriving at the study site who were intubated by EMS exceeds the safe pressure range of 20-30cmH2O. Objectives: While ETT cuff inflation is necessary to close the respiratory system, thus preventing air leaks and aspiration, there is evidence to suggest that over-inflated ETT cuffs can cause long-term complications. The purpose of this study is to characterize the cuff pressures of ETTs placed by EMS providers. Methods: This project was a single center, prospective observational study. Endotracheal tube cuff pressures were measured and recorded for adult patients intubated by EMS providers prior to arrival at a large, urban, tertiary care center over a nine-month period. All data were collected by respiratory therapists utilizing a cuff pressure measurement device which had a detectable range of 0-100cmH2O and was designed as a syringe. Results including basic patient demographics, cuff pressure, tube size, and EMS service were recorded. Results: In total, 45 measurements from six EMS services were included with ETT sizes ranging from 6.5-8.0mm. Mean patient age was 52.2 years (67.7% male). Mean cuff pressure was 81.8cmH2O with a range of 15 to 100 and a median of 100. The mode was 100cmH2O; 40 out of 45 (88.9%) cuff pressures were above 30cmH2O. Linear regression showed no correlation between age and ETT cuff pressure or between ETT size and cuff pressure. Two-tailed T tests did not show a significant difference in the mean cuff pressure between female versus male patients. Conclusion: An overwhelming majority of prehospital intubations are associated with elevated cuff pressures, and cuff pressure monitoring education is indicated to address this phenomenon.

A Comparison of Falls and Dizziness Handicap by Vestibular Diagnosis

2021 ◽  
pp. 1-10
Author(s):  
Ryan J. Huang ◽  
Sherri L. Smith ◽  
Libor Brezina ◽  
Kristal M. Riska
Keyword(s):  
Care Center ◽  
Tertiary Care ◽  
Cross Sectional Study ◽  
Demographic Variables ◽  
Vestibular Migraine ◽  
Cross Sectional ◽  
Positional Vertigo ◽  
Increased Risk ◽  
Risk Of Falls ◽  
Paroxysmal Positional Vertigo

Purpose There is a paucity of data that directly compares the falls rate and dizziness handicap of different vestibular diagnoses. The purpose of this study is to compare the falls rate and dizziness handicap of common vestibular diagnoses encountered among a cohort of vestibular patients at a single institution. Method We conducted a retrospective cross-sectional study of patients evaluated for dizziness at a tertiary care center vestibular clinic between August 1, 2017, and March 19, 2019. Vestibular diagnosis, demographic variables, comorbidities, falls status, and Dizziness Handicap Inventory (DHI) were extracted from the medical record for analysis. Associations between vestibular diagnosis and falls history or DHI were evaluated using multivariate logistic and linear regression, respectively. Results A total of 283 patients met our inclusion criteria with the following diagnoses: benign paroxysmal positional vertigo (BPPV; n = 55), acoustic neuroma ( n = 30), Ménière's disease ( n = 28), multiple vestibular diagnoses ( n = 15), vestibular migraine ( n = 135), or vestibular neuritis ( n = 20). After adjusting for age, sex, race, medications, and comorbidities, the odds of falling was 2.47 times greater (95% CI [1.08, 6.06], p = .039) and the DHI score was 11.66 points higher (95% CI [4.99, 18.33], p < .001) in those with vestibular migraine compared to those with BPPV. Other diagnoses were comparable to BPPV with respect to odds of falling and dizziness handicap. Conclusions Patients with vestibular migraine may suffer an increased risk of falls and dizziness handicap compared to patients with BPPV. Our findings highlight the need for timely evaluation and treatment of all patients with vestibular disease.

scholarly journals The Short Cosyntropin Test Revisited: New Normal Reference Range Using LC-MS/MS

2018 ◽  
Vol 103 (4) ◽  
pp. 1696-1703 ◽  
Author(s):  
Grethe Å Ueland ◽  
Paal Methlie ◽  
Marianne Øksnes ◽  
Hrafnkell B Thordarson ◽  
Jørn Sagen ◽  
...  
Keyword(s):  
Reference Range ◽  
Normal Reference Range ◽  
New Normal ◽  
Normal Reference

scholarly journals EP08.08: Ventricular occupying ratio at 18-30 weeks' gestation: normal reference range and ventriculomegaly

2018 ◽  
Vol 52 ◽  
pp. 224-224
Author(s):  
R.K. Pooh ◽  
T. Nakamura ◽  
M. Machida ◽  
K. Uenishi ◽  
K. Kusunoki ◽  
...  
Keyword(s):  
Reference Range ◽  
Normal Reference Range ◽  
Normal Reference

scholarly journals Transport Factors Affecting the Outcome of Referred Neonates Admitted in A Tertiary Care Hospital

2018 ◽  
Vol 41 (3) ◽  
pp. 159-164 ◽  
Author(s):  
Madhabi Baidya ◽  
Mahfuza Shirin ◽  
Liton Chandra Saha
Keyword(s):  
Perinatal Asphyxia ◽  
Care Center ◽  
Tertiary Care ◽  
Preterm Neonates ◽  
P Value ◽  
Care Hospital ◽  
Cross Sectional ◽  
Neonatal Transport ◽  
Group I ◽  
Group Ii

Background: Adequate neonatal transport is a key component of care of the sick newborns who require referral to tertiary care center. Poor transportation is one of the iatrogenic factors associated with greater neonatal mortality. Neonatal transport is the greatest challenge faced today in our country. The purpose of this study was to find out characteristics of transport of referred neonates and to idention the factors that contribute to mortality.Methodology: This cross sectional study was conducted in Dhaka Shishu (Children) Hospital from June 2013 to November 2013. Both term and preterm neonates who were referred within first seven days of life were included and those with gross congenital abnormalities and left against medical advice were excluded from the study. After enrollment, data were collected using a structured questionnaire including birth details, interventions before transportation, reasons for referral, and details of transportation. Outcome & duration of hospital stay were also recorded. Neonates who were expired considered as group I and who were survived considered as group II. The study variables were analyzed for their association with immediate outcome by applying chi square test and t test. P value <0.05 was considered significant.Results: This study found that out of 332 neonates 181 were expired with 54.5% mortality rate. One eighty one neonates who were expired, considered as group I and one fifty one neonate were survived, considered as group II. The mortality was significantly high in male neonates [RR 0.80 (0.66-0.97)] and neonates those delivered at home [RR 1.34(1.10-1.64)] (p<0.05). Perinatal asphyxia, pre-term low birth weight, neonatal sepsis were the main causes of referral. It was found that transportation without any referral note [RR 1.40 (1.14- 1.71)], no advice regarding maintenance of airway[RR 1.50(1.17- 1.92)]and keeping warm [RR 1.51(1.17-1.950], resuscitation on admission [RR 1.63(1.23-2.17)] and transportation required > 3hours [RR 1.36(1.09-1.69)] were associated with significantly higher mortality among referred transported neonates(p<0.05).Conclusions: This study found that male neonates, home delivery, transportation without any referral note, no advice regarding maintenance of airway and keeping warm, resuscitation needed on admission and prolonged transportation time were significantly associated with mortality of referred transported neonates.Bangladesh J Child Health 2017; VOL 41 (3) :159-164

scholarly journals Usefulness of the Non-Contact Tonometry in Out-Patient Screening

2016 ◽  
Vol 15 (2) ◽  
Author(s):  
Satheesh Solomon T Selvin ◽  
Chris Elsa Samson Jacob ◽  
Thomas Kuriakose
Keyword(s):  
Central Corneal Thickness ◽  
Care Center ◽  
Corneal Thickness ◽  
Tertiary Care ◽  
Cross Sectional Study ◽  
Applanation Tonometry ◽  
Cross Sectional ◽  
Significant Difference ◽  
Iop Measurement ◽  
The Mean

Purpose: Goldmann applanation tonometry (GAT) is considered the gold standard for Intraocular Pressure (IOP) measurement. It has the disadvantages of being a contact device, need for a slit-lamp, non-portability and need of a skilled examiner. Many hospitals are using a Non Contact Tonometry (NCT) as a screening device to save clinician time, however the usefulness is not proved in terms of reliability. This study was aimed to determine the usefulness of the Air-puff tonometer (TONOREF NIDEK II, NIDEK CO., LTD., JAPAN) over a GAT in a tertiary care center. Design: Cross-sectional Study Methods: This was a cross-sectional, non interventional observational study conducted on 224 eyes (right eye) from 224 patients. All patients underwent the IOP measurement with both methods and a central corneal thickness (CCT) measured. The data was analyzed using SPSS 20.0 software. Results: The mean age of the patients was 40.3±11.29 years. There was a statistically significant difference (p<0.001) between the mean NCT and GAT readings which persisted even after correction for central corneal thickness. The correlation between NCT and GAT using Pearson’s correlation coefficient was strong irrespective of the corrections for their corneal thickness (r = 0.751 and 0.718 for uncorrected and corrected values respectively). The correlation of the individual clinicians for the readings varied from moderate to strong. The ROC curve showed the best sensitivity and specificity to occur at around 13 to 14 mmHg. Conclusion: NCT seems to overestimate the IOP at low ranges as compared to the GAT and underestimate at higher ranges. The crossover of the values is seen between 12 to 13 mmHg.  The clinician should do an individualized analysis of his/her GAT measurements to the readings of the NCT machine at the clinic to obtain clinician specific nomogram. 

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