Seasonally varying biogeochemical regime around the coral habitats off central west coast of India.

The Western Indian Continental Shelf (WICS) experiences upwelling during the Southwest Monsoon (SWM), leading to deoxygenation and acidification of subsurface waters. The region has patchy growth of corals, e.g. in the Grande Island and Angria Bank. Measurements made during the late SWM of 2022 reveal that the shelf waters around the Grande Island were subject to varying environmental conditions, viz. lower temperature (21.3-26.1°C), oxygen (0-4.9 mL L-1) and pHT (7.506-7.927). Complete anoxia was associated with sulphide build-up to a maximum of 5.9 µmol L-1 at 17 m depth. An additional episodic condition (high temperature, low oxygen and pH) also occurred associated presumably with a plankton bloom in April 2017. Hence, unlike the offshore coral site Angria Bank, waters around the Grande Island experiences extreme changes in physico-chemical conditions (e.g. Ωarg ∼1.2-1.8 during October 2022) seasonally as reported here. The biogeochemical conditions are however not as intense (Ωarg = 0.6) as observed along the eastern boundary upwelling system of the Pacific Ocean.

C Arm confirmation of lung isolation in pediatric patients undergoing video-assisted thoracoscopic decortication: A retrospective case series.

Video-assisted thoracoscopic surgery (VATS) is a frequently performed procedure in children which requires an efficient technique for lung isolation. Unavailability of appropriate size double-lumen tubes (DLT) for children and fiber optic scopes inspired us to create our own technique for lung isolation. This retrospective case series aims to describe our technique of C arm-aided endotracheal tube (ETT) placement for one-lung ventilation in these patients. 15 patients, aged 3 months to 10 years posted for VATS were recruited. Standard monitoring, general anesthesia and Lung isolation done as per the described protocol. Mean, standard deviation, and 95% Confidence interval was used. The mean age and weight was 43.93 months was 16.4 kg respectively. All right bronchus intubations were achieved in the first attempt. Of the 8 left bronchus intubations, 4 needed more than one attempt with a stylet inserted with a gentle J-shaped curve. Mild desaturation, seen in 2 patients during surgery was corrected with neck extension and increasing the FiO2. None of the cases required withdrawal of the tube into the trachea. One-lung anesthesia was achieved successfully in all the cases using C Arm with routine ETT.