Which of the following regarding the assumption of sphericity is false? (Hint: Even very small departures from sphericity produce large biases in the F-test.)
Sphericity does not affect post hoc tests.
The effect of violating sphericity is a loss of power (i.e., an increased probability of a Type II error).
When sphericity is violated, we need to adjust the degrees of freedom for any F-ratios affected by the violation.
When sphericity is violated, the Bonferroni post hoc test can be used.
The technique made by the nurse is keeping sterile field above waist level.
<h3>Which technique is made by the nurse to insert an indwelling urinary catheter?</h3>
Similar to an intermittent catheter, an indwelling urinary catheter is implanted, but it is left in place. A water-filled balloon keeps the catheter in the bladder and prevents it from escaping. These catheters are frequently referred to as Foley catheters.
The sole approved usage for indwelling urinary catheters is short-term, or fewer than 30 days (EAUN recommends no longer than 14 days.) Urine incontinence (UI) and urinary retention are two frequent bladder dysfunctions for which the catheter is implanted for continuous bladder drainage.
In order to produce a sterile field, sterile surgical drapes must be placed around the patient's surgical site and on the stand that will contain the sterile instruments and other supplies required for the procedure. The maintenance of a sterile environment is crucial to the prevention of infection. These collection of procedures that are followed before, during, and after invasive procedures help to lower the risk of post-procedure infection by reducing the number of potentially contagious microbes.
Hence, The technique made by the nurse is keeping sterile field above waist level.
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