A new LBBB is always pathological and can be a sign of myocardial infarction. The criteria (Sgarbossa [1]) that can be used in case of a LBBB and suspicion of infarction are: ST elevation > 1mm in leads with a positive QRS complex (concordance in ST deviation) (score 5)
Churning Out Vitamins. Your microbiota also work as vitamin-production plants. Bacteria in the gut synthesize vitamins, and those that they donât use are excreted to benefit their host. In humans, gut bacteria secrete vitamin B12 and a less familiar micronutrient called vitamin K.he resulting understanding of the microbiomeâs connections to human health may lead to a new wave of disease prevention and treatment in which very small, historically unheralded entities have big effects.
Humans are unable to synthesize vitamin K. It must either be acquired from dietary sources, or as metabolic by-products of intestinal bacteria. Still, the vitamin is so widely distributed in nature that nutritional deficiencies do not occur under normal circumstances.ecause vitamin K is common in many foods and is also synthesized by intestinal bacteria, deficiency in humans is unlikely to occur under normal conditions.