respiratory alkalosis was present in 371 patients (70.7%).
Respiratory acidosis combining with metabolic acidosis
was present in 136 patients (25.9%). Respiratory
alkalosis combining with metabolic alkalosis was
present in 11 patients (2.1%). Respiratory acidosis
combining with metabolic alkalosis was present in 3
patients (0.6%). Mixed metabolic acidosis was present
in 2 patients (0.4%) and metabolic acidosis combining
metabolic alkalosis was present in 2 patients (0.4%).
Triple acid-base disorder (TABD) was present in 71
patients (9.5%) with respiratory alkalosis in 63 (88.7%)
and respiratory acidosis in 8 (11.3%). Thirty six (50.7%)
of them already suffered from TABD upon arrival to
the emergency room and 35 (49.3%) of them
developed TABD subsequently.
AG and potential bicarbonate in ABD
Prior to the calculation of AG, there were 538 cases
with metabolic acidosis. After calculating AG, the
number of metabolic acidosis increased from 538 to
678 cases. It means that the incidence of metabolic
acidosis increased from 72.2% to 91.0%. If we never
calculated AG, these 140 cases of metabolic acidosis
would have been missed and the rate of missed
diagnosis was 20.6% (140 out of 678 cases).
Meanwhile, before we calculated AG, there were only
12 cases with TABD. After calculation of AG, there
were 71 cases with TABD. It means that the number
of TABD increased from 12 to 71 cases and the
incidence of TABD increased from 1.6% to 9.5%. Fifty
nine cases with TABD would have been missed and
the rate of missed diagnosis was 83.1% (59 out of 71
cases). The same phenomenon occurred when potential
bicarbonate was calculated. The number of TABD
increased from 8 to 71 and the incidence of TABD
increased from 1.1% to 9.5%. It means that 63 patients
with TABD would have been missed and the rate of
missed diagnosis was 88.7% (63 out of 71 cases).
For age and APACHE II scores, there were no
significant difference between the groups of SABD and
DABD (p>0.05). However, patients from these 2
groups were younger than those suffering from TABD
(p
respiratory alkalosis was present in 371 patients (70.7%).
Respiratory acidosis combining with metabolic acidosis
was present in 136 patients (25.9%). Respiratory
alkalosis combining with metabolic alkalosis was
present in 11 patients (2.1%). Respiratory acidosis
combining with metabolic alkalosis was present in 3
patients (0.6%). Mixed metabolic acidosis was present
in 2 patients (0.4%) and metabolic acidosis combining
metabolic alkalosis was present in 2 patients (0.4%).
Triple acid-base disorder (TABD) was present in 71
patients (9.5%) with respiratory alkalosis in 63 (88.7%)
and respiratory acidosis in 8 (11.3%). Thirty six (50.7%)
of them already suffered from TABD upon arrival to
the emergency room and 35 (49.3%) of them
developed TABD subsequently.
AG and potential bicarbonate in ABD
Prior to the calculation of AG, there were 538 cases
with metabolic acidosis. After calculating AG, the
number of metabolic acidosis increased from 538 to
678 cases. It means that the incidence of metabolic
acidosis increased from 72.2% to 91.0%. If we never
calculated AG, these 140 cases of metabolic acidosis
would have been missed and the rate of missed
diagnosis was 20.6% (140 out of 678 cases).
Meanwhile, before we calculated AG, there were only
12 cases with TABD. After calculation of AG, there
were 71 cases with TABD. It means that the number
of TABD increased from 12 to 71 cases and the
incidence of TABD increased from 1.6% to 9.5%. Fifty
nine cases with TABD would have been missed and
the rate of missed diagnosis was 83.1% (59 out of 71
cases). The same phenomenon occurred when potential
bicarbonate was calculated. The number of TABD
increased from 8 to 71 and the incidence of TABD
increased from 1.1% to 9.5%. It means that 63 patients
with TABD would have been missed and the rate of
missed diagnosis was 88.7% (63 out of 71 cases).
For age and APACHE II scores, there were no
significant difference between the groups of SABD and
DABD (p>0.05). However, patients from these 2
groups were younger than those suffering from TABD
(p<0.01). APACHE II scores in TABD patients were
significantly higher than those with SABD or DABD
(p<0.01). Iatrogenic factors with ABD (Table 2). It is
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