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Fulltext Aerosol-generating procedures in thoracic surgery in the COVID-19 era in Malaysia

Sathiamurthy N, Balasubbiah N, Dharmaraj B

Asian Cardiovasc Thorac Ann, 2020 Oct;28(8):495-499.
PMID: 32787442 DOI: 10.1177/0218492320950898

BACKGROUND: The Covid-19 pandemic has caused changes in the surgical treatment of non-Covid patients, especially in thoracic surgery because most procedures are aerosol generating. Hospital Kuala Lumpur, where thoracic procedures are performed, was badly affected. We describe our experience in performing aerosol generating procedures safely in thoracic surgery during the Covid-19 era.
METHODS: Medical records of patients who underwent thoracic surgery from March 18, 2020 to May 17, 2020 were reviewed retrospectively. All patients undergoing thoracic surgery were tested for Covid-19 using the reverse transcriptase polymerase chain reaction method. Patients with malignancy were observed for 10 to 14 days in the ward after testing negative. The healthcare workers donned personal protective equipment for all the cases, and the number of healthcare workers in the operating room was limited to the minimum required.
RESULTS: A total of 44 procedures were performed in 26 thoracic surgeries. All of these procedures were classified as aerosol generating, and the mean duration of the surgery was 130 ± 43 minutes. None of the healthcare workers involved in the surgery were exposed or infected by Covid-19.
CONCLUSION: Covid-19 will be a threat for a long time and thoracic surgeons must continue to provide their services, despite having to deal with aerosol generating procedures, in the new normal. Covid-19 testing of all surgical candidates, using the reverse transcriptase polymerase chain reaction, donning full personal protective equipment for healthcare workers, and carefully planned procedures are among the measures suggested to prevent unnecessary Covid-19 exposure in thoracic surgery.
Fulltext Outcomes of pulmonary resection in pulmonary aspergilloma: A retrospective cohort study in a single tertiary-care hospital in Northern Thailand

Balasubbiah N, Saeteng S, Siwachat S, Thuropathum P, Tantraworasin A

Asian J Surg, 2024 Jul;47(7):3033-3038.
PMID: 38388261 DOI: 10.1016/j.asjsur.2024.02.003

BACKGROUND: To date, surgery is the best approach to maximize a cure for symptomatic aspergilloma, but this is not without risk of both morbidity and mortality. The aim of this study is to present the characteristics and outcomes of 77 patients diagnosed with aspergilloma who underwent surgery at Chiang Mai University Hospital (CMUH), and to identify risk factors for composite major postoperative complications (CMPC).
METHODS: This is an observational retrospective cohort study carried out at CMUH over a period of 11 years from January 1, 2010, to February 28, 2021. Patient characteristics and postoperative outcomes were studied. The primary outcomes were categorized into CMPC. Univariable and multivariable risk regression analysis were used to identify risk factors of CMPC, with risk ratio (RR) and 95% confidence intervals being calculated.
RESULTS: There were 77 patients included in this study; 27 patients identified as having CMPC and 55 patients as a non-CMPC group. From the multivariable analysis, a factor associated with CMPC included perioperative FFP transfusion (risk ratio (RR) 1.01,95 % CI 1.01-1.02) and preoperative angiogram embolization (RR 8.42, 95 % CI 1.44-49.06) whereas immediate extubation (RR 0.22, 95% CI 0.06-0.81) was less likely to be associated with CMPC. There was a trend of increased risk of CMPC in patients received perioperative blood transfusion, but the data did not reach statistical significance.
CONCLUSIONS: This study has identified a need for patient profiling before embarking on lung surgery for aspergilloma, to predict outcomes and allocate resources appropriately for safer surgery.
Fulltext A Surgical Management of Mediastinal Parathyroid Adenoma: A Regional Experience in Malaysia

Tay YZ, Balasubbiah N, Awang RR, Retna Pandian BD, Sathiamurthy N

Cureus, 2024 Mar;16(3):e56792.
PMID: 38650780 DOI: 10.7759/cureus.56792

Primary hyperparathyroidism (PHPT) usually presents with symptoms of hypercalcemia which is due to excessive secretion of parathyroid hormone (PTH). Surgical removal of the secreting tumor either adenoma or hyperplasia remains the mainstay of treatment. Around 2% to 25% of the lesions are located in the mediastinum. We reviewed our institution's surgical treatment and approach to mediastinal parathyroid adenoma (MPA). We retrospectively reviewed the demography, comorbidities, clinical presentation, surgical approach, and outcome for patients in our institution who underwent surgery for MPA from September 2019 until August 2023. All patients with MPA who underwent surgery were included in the review. The surgical approaches used were both video-assisted thoracoscopic surgery (VATS) and median sternotomy. There were three patients with PHPT due to MPA who underwent surgery. Out of the three patients, two were female. The mean age was 48.6 years old, ranging from 16 to 66 years old. All of them presented with PHPT with a raised mean serum calcium level of 3.52 mmol/L (range: 2.84-4.38 mmol/L) and a mean PTH or intact PTH (iPTH) level of 274.6 pmol/L (range: 8.87-695 pmol/L). Ultrasound of the neck was performed for all the patients before further investigations were done to look for the ectopic parathyroid gland. Computed tomography (CT) of the thorax showed mediastinal parathyroid mass in all the patients with an average size of 2.4 x 2.1 x 2.3cm (range: 1.3-3.8cm), which showed uptake in 99mTc-hexakis-2-methoxyisobuthylisonitrile (Tc99m-MIBI) scintigraphy. VATS was performed for two cases and an upper partial sternotomy was performed for one patient. Postoperatively, iPTH and serum calcium levels were reduced significantly for all patients. There were no post-operative complications in our study. Comprehensive diagnostic imaging and surgical planning are important for the localization of MPA. In our review, all cases were promptly diagnosed and underwent surgery without complication.

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