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Δευτέρα 22 Νοεμβρίου 2021

A case of acute liver injury induced by methimazole

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Karthika Niveditha, Arun S Menon, Harish Kumar, Malini Eapen, Rajesh Gopalakrishna

Thyroid Research and Practice 2021 18(1):34-36

Antithyroid drugs, methimazole, and propylthiouracil have been reported to cause hepatotoxicity. We report the case of a patient with methimazole induced liver injury who presented within a few weeks of commencement of the drug. She presented with a cholestatic picture and responded well to discontinuation of the drug and administration of steroids.
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Long-term hypocalcemia prediction post thyroidectomy

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Deepak Janardhan, Sandeep Suresh, PG Balagopal, Nebu Abraham George, KM Jagathnath Krishna

Thyroid Research and Practice 2021 18(1):14-18

Introduction: Hypocalcemia is a common sequela of total thyroidectomy and is usually transient (30%), only a few develop permanent hypoparathyroidism. Till date, no effective risk stratification score to predict hypocalcemia is available that can predict postoperative hypocalcemia. Materials and Methods: This was a prospective observational study including all patients who underwent total or completion thyroidectomy with initial parathormone (PTH) within the normal range in our institution during a 1 year period. Postoperative 6th h PTH fall was noted in all patients and cutoff point for the prediction of long-term hypocalcemia (LTHP) was determined using a paired t-test. Results: Postoperatively, calcium supplementation was initiated in 52% of patients. In 7.6% of patients who had a fall in PTH to more than 80% of preoperative value, calcium supplementation could not be tapered even after 3 months postoperatively. About 66% of patients <20 years of age developed hypocalcemia in the postoperative period. Patients who developed delayed hypocalcemia with initial normal calcium levels had fall in PTH of at least 45%. For individuals below 20 years, a PTH fall of 56% or more required calcium supplementation. The various variables studied failed to attain statistical significance. Conclusions: More than 82% fall in 6th h postoperative PTH predicts long-term hypocalcemia. Post total thyroidectomy, adolescent individuals are at a higher risk of developing hypocalcemia; hence, early calcium supplementation is recommended based on fall in PTH. Weighted score to predict LTHP could not be developed, as none of the risk factors evaluated were statistically significant.
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Long-term hypocalcemia prediction post thyroidectomy

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Deepak Janardhan, Sandeep Suresh, PG Balagopal, Nebu Abraham George, KM Jagathnath Krishna

Thyroid Research and Practice 2021 18(1):14-18

Introduction: Hypocalcemia is a common sequela of total thyroidectomy and is usually transient (30%), only a few develop permanent hypoparathyroidism. Till date, no effective risk stratification score to predict hypocalcemia is available that can predict postoperative hypocalcemia. Materials and Methods: This was a prospective observational study including all patients who underwent total or completion thyroidectomy with initial parathormone (PTH) within the normal range in our institution during a 1 year period. Postoperative 6th h PTH fall was noted in all patients and cutoff point for the prediction of long-term hypocalcemia (LTHP) was determined using a paired t-test. Results: Postoperatively, calcium supplementation was initiated in 52% of patients. In 7.6% of patients who had a fall in PTH to more than 80% of preoperative value, calcium supplementation could not be tapered even after 3 months postoperatively. About 66% of patients <20 years of age developed hypocalcemia in the postoperative period. Patients who developed delayed hypocalcemia with initial normal calcium levels had fall in PTH of at least 45%. For individuals below 20 years, a PTH fall of 56% or more required calcium supplementation. The various variables studied failed to attain statistical significance. Conclusions: More than 82% fall in 6th h postoperative PTH predicts long-term hypocalcemia. Post total thyroidectomy, adolescent individuals are at a higher risk of developing hypocalcemia; hence, early calcium supplementation is recommended based on fall in PTH. Weighted score to predict LTHP could not be developed, as none of the risk factors evaluated were statistically significant.
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Primary hypothyroidism on follow-up in a cohort of Indian patients with subacute thyroiditis

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Pramila Kalra, KM Prasanna Kumar

Thyroid Research and Practice 2021 18(1):1-5

Objectives: Subacute thyroiditis (SAT) is a temporary dysfunction of the thyroid gland and is commonly due to its viral infection. Permanent hypothyroidism after recovery from SAT has been reported in various studies. Methodology: This was a prospective study conducted in two tertiary care centers in South India to follow-up these cases for the development of permanent primary hypothyroidism at 1-year follow-up after recovery from SAT. Results: The total number of cases followed up was 146, including 103 females (70.5%) and 43 males (29.5%). Females' mean age was 33.03 ± 11.7 years, and males' mean age was 40.17 ± 11.84 years. Seven patients reported the second attack of thyroiditis. The mean thyroid-stimulating hormone (TSH) recorded at baseline was 0.042 ± 0.056 µIU/ml. Permanent hypothyroidism was seen in 19.86% of the cases at a 1-year follow-up and was found to be higher in patients with lower TSH at baseline. The females and males were affected at a younger age as compared to other studies. The incidence of permanent hypothyroidism was found to be higher as compared to some but lesser compared to a few others. The iodine supplementation could also be one of the postulates for this higher incidence of hypothyroidism. The severity of thyrotoxicosis was a significant determinant of the future development of hypothyroidism. Conclusions: The patients with SAT need to be followed up for the development of permanent hypothyroidism. The prevalence of hypothyroidism at 1 year was 19.86% after an attack of thyroiditis.
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The role of vein grafts in reconstructive head and neck microsurgery

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Braz J Otorhinolaryngol. 2021 Oct 26:S1808-8694(21)00175-0. doi: 10.1016/j.bjorl.2021.09.004. Online ahead of print.

ABSTRACT

OBJECTIVE: Free tissue transfer is widely used for head and neck reconstruction. In certain circumstances, vein grafting is required to elongate free flap pedicles to connect them to appropriate recipient vessels. Because of controversy regarding the use of interposition vein grafts in free tissue reconstruction, this paper reports vein graft indications, techniques, safety, and outcomes for head and neck microvascular surgery.

METHODS: Twenty-six patients (23 men and 3 women) who underwent interposition vein grafting concurrent with free tissue transfer were included in this study. The most common reason for head and neck reconstruction with vein graft was tumor recurrence, followed by flap salvage. The interposition vein grafts were applied in two manners as temporary arteriovenous (A-V) loop and conduit to extend the length of the free flap for venous drainage.

RESULTS: The most common reconstructions were anterolateral thigh flaps (15 cases), followed by vastus lateralis myocutaneous (3 cases) and radial forearm (2 cases) flaps. The common recipient vessels were superior thyroid artery, superficial temporal artery and external jugular vein. The free flap loss rate was 7.7% with vein grafts and 4.9 without vein grafts (p = 0.380). The free flap complication rate was 50.0% and 16.8% in patients with and without vein grafts, respectively (p < 0.001). Radiation therapy, chemotherapy, prior neck dissection, and prior free flap transfer were more common in the vein graft group (all p < 0.001). The hospital stay was significantly longer for the vein graft group than for the non-vein graft group (29.5 vs. 19.0 days; p = 0.001).

CONCLUSION: Overall free flap survival rates of 92.3% and 95.1% in the vein and non-vein graft groups, respectively - indicating the reliability of the vein grafts in challenging head and neck reconstructions, particularly in salvage cases and patients with multiple reconstructions.

LEVEL OF EVIDENCE: Level 3.

PMID:34802968 | DOI:10.1016/j.bjorl.2021.09.004

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The never-ending battle between proximal row carpectomy and four corner arthrodesis: A systematic review and meta-analysis for the final verdict

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J Plast Reconstr Aesthet Surg. 2021 Oct 23:S1748-6815(21)00516-7. doi: 10.1016/j.bjps.2021.09.076. Online ahead of print.

ABSTRACT

While scaphoid excision combined with Four Corner Arthrodesis (FCA) or Proximal Row Carpectomy (PRC) is a commonly-used salvage procedures to treat type two and type three Scapholunate Advanced Collapse (SLAC) and Scaphoid Nonunion Advanced Collapse (SNAC)-induced degenerative arthritis, controversy remains over which treatment intervention provides superior outcomes. We searched for articles comparing a range of motion, grip strength, complications requiring reoperation, conversion to wrist arthrodesis, pain, and disability of shoulder and arm scores between FCA and PRC-treated patients. The risk of bias was assessed using the National Institutes of Health (NIH) quality assessment tool. We performed a meta-analysis using Random-Effects Models. Fifteen articles (10 retrospective, 2 cross-sectional, 1 prospe ctive, and 2 randomized trials) were included. There was no significant difference between PRC and FCA in any of the different outcome measures. The risk of bias was found consistently high across all studies. Despite the lack of high-quality evidence, based on existing literature, we recommend PRC as the preferred choice of treatment because of the simplicity of the surgical procedure, lack of hardware-related complications, and comparable long-term outcomes. Level of evidence: III - Therapeutic.

PMID:34802951 | DOI:10.1016/j.bjps.2021.09.076

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Do patients with chronic rhinosinusitis exhibit elevated rates of Covid‐19 infection?

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Abstract

Patients with chronic rhinosinusitis (CRS) may have concerns regarding their potential for an increased likelihood of contracting Covid-19, given baseline inflammatory disease and utilization of topical or oral immunosuppressive therapies for disease treatment. In the present study, we utilize matched cohort sampling of over 12,000 CRS patients and 12,000 controls seen between June of 2020 and January of 2021, examining rates of Covid-19 testing and positivity during that time period. We found no difference in Covid-19 contraction between CRS patients and matched non-CRS patients, despite an almost two-fold significant increase in testing among those with CRS. This suggests that CRS patients are likely not inherently more vulnerable to Covid-19 infection at a rate above that of the general population.

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