Thorough Flushing Strategy During Colonoscopy Examination
Condition: Colonoscopy
MeSH terms: Flushing
Study type: Observational

Summary: 
      The investigators plan to adopt a thorough flushing strategy when withdrawing the endoscope,
      and have zero tolerance for the liquid and foam in the intestinal lumen. Observe and compare
      the impact of this strategy with traditional limited degree suction methods on the results of
      colonoscopy. The research group and the control group respectively adopted a thorough
      flushing strategy and a limited flushing strategy, and compared the total time of colonoscopy
      examination, the time of withdrawal, the detection rate of polyps, the detection rate of
      small polyps, and the amount of flushing fluid between the two groups. Analyze the value of
      thorough flushing strategy for the efficiency and quality of colonoscopy examination.
    

Detailed description: 
      Most physicians do not adopt a strategy of complete suction of fluid from the intestinal
      lumen during colonoscopy. There are both concerns about the time required for colonoscopy and
      the possibility of inability to thorough cleannig up. Some endoscopists believe that the
      visual field for partial cleaning of fecal water is acceptable and does not affect
      observation. This study aims to make an observation and comparison based on the existing
      problems mentioned above. With the help of direct water injection system, the investigators
      plan to adopt a thorough flushing strategy when withdrawing the endoscope, and have zero
      tolerance for the liquid and foam in the intestinal lumen. Observe and compare the impact of
      this strategy with traditional limited degree suction methods on the results of colonoscopy.
      The research group and the control group respectively adopted a thorough flushing strategy
      and a limited flushing strategy, and compared the total time of colonoscopy examination, the
      time of withdrawal, the detection rate of polyps, the detection rate of small polyps, and the
      amount of flushing fluid between the two groups. Analyze the value of thorough flushing
      strategy for the efficiency and quality of colonoscopy examination.
    

Intervention name(s): thorough flushing
Intervention type(s): Procedure
Intervention description(s): The thorough flushing strategy refers to the thorough flushing of all liquid and foam accumulation areas during the inspection. Make all liquid accumulation parts in the intestinal cavity free of aspiratable liquid retention
Observational model: Case-Control
Time perspective: Prospective
Sampling method: Probability Sample
Study population: 
        160 patients were selected for colonoscopy examination and randomly assigned to the study
        group and control group. The two groups used a thorough flushing strategy and a limited
        flushing strategy to complete colonoscopy examination. The research group adopted a
        thorough flushing strategy, while the control group adopted a limited flushing strategy.
        The thorough flushing strategy refers to the thorough flushing of all liquid and foam
        accumulation areas during the inspection. Make all the liquid accumulation parts in the
        intestinal cavity free of aspiratable liquid retention. The limited flushing strategy
        refers to not pursuing full liquid suction, but flushing until it is clear enough for
        observation. The limited flushing strategy is currently the conventional flushing method
        for colonoscopy.
      
Keywords: colonoscopy, quality, polyps