Operative Case Volume Minimums Necessary for Surgical Training Throughout Rural Africa.

Background: Resident operative case volumes are an important aspect of surgical education, and minimums are required in Accreditation Council for Graduate Medical Education (ACGME) programs. Minimum operative case volumes for training do not exist in rural Africa. Our objective was to determine the optimal minimum operative case volume necessary for general surgery training in rural Africa.

Surgical Training Throughout Africa: A Review of Operative Case Volumes at Multiple Training Centers.

Background: Adequate surgical training is paramount to produce competent surgeons to address the global burden of surgical disease. The Pan-African Academy of Christian Surgeons (PAACS) has general surgery training programs in eight countries. Operative case volumes have been positively associated with improved trainee performance and patient outcomes.

Differentiation of 2-hydroxyglutarate enantiomers and its lactones by gas chromatography/electron ionization tandem mass spectrometry.

Rationale: 2-Hydroxyglutarate (2-hg) exists as enantiomers and can readily undergo cyclization to its lactone. Gas chromatography/electron ionization mass spectrometry (GC/EI-MS) has been used to separate 2-hg enantiomers in bodily fluids but the assay cannot simultaneously measure cyclic and acylic 2-hg enantiomers. Furthermore, the assignment of ion structures was not verified by complementary MS data.

Periodic reversals in Paenibacillus dendritiformis swarming.

Bacterial swarming is a type of motility characterized by a rapid and collective migration of bacteria on surfaces. Most swarming species form densely packed dynamic clusters in the form of whirls and jets, in which hundreds of rod-shaped rigid cells move in circular and straight patterns, respectively. Recent studies have suggested that short-range steric interactions may dominate hydrodynamic interactions and that geometrical factors, such as a cell's aspect ratio, play an important role in bacterial swarming.