From Wikipedia, the free encyclopedia. Diagenesis /ËdaÉªÉËdÊÉnÉsÉªs/ is the change of sediments or existing sedimentary rocks into a different sedimentary rock during and after rock formation (lithification), at temperatures and pressures less than that required for the formation of metamorphic rocks.It does not include changes from weathering.he term diagenesis, literally meaning across generation, is extensively used in geology. However, this term has filtered into the field of anthropology, archaeology and paleontology to describe the changes and alterations that take place on skeletal (biological) material.
The propofol dosage typically was an initial bolus of 20 to 40 mg, followed by 10 to 20 mg boluses to maintain sedation. Sipe reported that propofol achieved faster time to sedation, greater depth of sedation and faster recovery than midazolam/meperidine sedation. Complication rates were similar.
Patients usually are briefly sedated for a colonoscopy, and some kinds of sedation require monitoring by specialists. That includes use of propofol, a powerful drug that's injected to cause deep sedation and was implicated in pop star Michael Jackson's death.hile propofol sedation is also sometimes given to low-risk colonoscopy patients, the study authors say that's often unnecessary. Drugs usually recommended for these patients typically cause lighter sedation, though most patients don't remember anything about the exams afterward.