With a mean follow-up time of 18.7 months in the PS group (n=14), the graft success rate was 92.9%, and a 19.4 dB gap change with a residual average ABG of 12.3 dB could be achieved.
In the multivariate model, the decrease in ABG was 19.34 dB in the primary/discontinuity group.
However, previous studies have shown that preoperative ABG can reliably predict OC defects in CSOM independent of its nature, discontinuity, or fixation.
There is a slight increase in the risk of stapes mobilization in ears with a small ABG when compared to those with larger ABGs (4 vs.
Surgeon experience is crucial in stapes surgery, especially in patients with small ABGs. The large series by Lippy et al was performed in a tertiary center with experience of 14,000 stapedectom ies performed over 35 years.
In five simple steps, ABG results can be analyzed for acidosis vs.
For example, a patient presents with the following ABG results: pH=7.29, PaC[O.sub.2]=49 mm Hg, HC[O.sub.3]=26 mEq/L.
"Looking at the continuous ABG values, there was no significant difference in the mean PaC[O.sub.2], Pa[O.sub.2], or Aa gradient between the two groups.
"Normal ABG data in combination with negative D-dimer [do] not allow safe exclusion of PE without going on to diagnostic imaging," Dr.
in order to determine if the ABG result identifies acid or base, and to determine if it is respiratory or metabolic, all three parameters must be reviewed.
In order to label an abnormal ABG, the nurse should review the values and place an "a" or a "b" (for "alkalosis" or "base") next to the value.