Introduction: Selective conservative management of asymptomatic patients with small pneumothorax (PTX) in the setting of thoracic stab wounds (SWs) appears safe, but the correlation between the size of PTX and rate of failure of conservative management remains largely unknown.
Materials and methods: A prospective study was conducted over a 14-year period on patients with isolated thoracic SWs who were asymptomatic with small PTX on CXR (<2 cm) and underwent clinical observation at a major trauma centre in South Africa.
Results: 284 patients were included (91 % male, mean age: 24 yrs). Eight (3 %) eventually required TT, and all other patients were managed successfully with clinical observation alone. There was no morbidity or mortality as a direct result of our selective conservative management approach. The need for TT was based on the size of initial PTX; Group A: <0.5 cm (0 %), Group B: ≥0.5 to < 1 cm (0 %), Group C: ≥1 cm to < 1.5 cm (3 %) and Group D: ≥1.5 cm to < 2 cm (13 %). For every 0.5 cm increase in PTX size, there was a five-fold (95 % CI, 1.73 to 16.67, p = 0.004) increased risk for the need for TT.
Conclusion: Selective conservative management of patients with asymptomatic small PTX of < 2 cm on CXR following thoracic SWs appears safe although the greater the size of the initial PTX, there was a higher risk of failure of conservative management. This should alert clinicians to remain vigilant and have a low threshold for intervention.
Background: Obesity is associated with technical challenges during laparoscopic cholecystectomy (LC) and a high risk of intra-postoperative complications. Robotic-assisted cholecystectomy (RC), with its superior visualization and precision, may offer better outcomes. This study compares intraoperative and 30-day postoperative outcomes in patients with a BMI greater than 30 undergoing LC versus RC.
Methods: Patients with a BMI greater than 30 who underwent LC and RC at our institution from January 2021 to May 2024 were included to compare outcomes such as conversion rate, length of stay, and operative time between groups. Then, we conducted a subgroup analysis comparing LC patients who required conversion to open surgery with those who did not to compare outcomes.
Results: 637 patients were included (505 LC and 132 RC). RC patients had lower rates of conversion to open surgery (0.0 % vs. 3.2 %, P = 0.038) and shorter hospital stays (1 [0.5-2] vs. 1 [1-2] days, P < 0.001) compared to LC. When sub-analyzed patients LC patients, those who required conversion to open surgery had a longer length of stay (4 [3-6.5] vs. 1 [1-2] days, P < 0.001), and operative time (224.31 ± 88.17 vs. 104.27 ± 37.88 min, P < 0.001) compared to those who did not require conversion.
Conclusion: Patients with obesity who underwent RC have reduced conversion to open rates compared to LC. Furthermore, a reduced conversion to open rate with RC potentially leads to a shorter hospital stay. RC offers better postoperative outcomes in patients with obesity.

