body temperature, mean arterial pressure, heart rate, respiratory rate, alveolar-arterial oxygen (A-a) gradient; if fractional inspired oxygen concentration is [greater than or equal to]0.5, arterial oxygen tension (Pa[O.sub.2]); if fractional inspired oxygen concentration is <0.5, serum bicarbonate (HC[O.sub.3]); if there is no arterial blood gas
analysis, arterial pH, serum sodium, serum potassium, creatinine, hematocrit, white blood cell count, Glasgow Coma Scale score, age and medical condition were entered into the APACHE II score, as shown in Figure 1 (4).
When the patient's arterial blood gas
values in the last 24 hours prior to the insertion of ECMO were examined, pH was 7.19[+ or -]0.14, p[O.sub.2] was 87.4[+ or -]24 mmHg, pC[O.sub.2] was 43.6[+ or -]10.4 mmHg, lactate was 4.5[+ or -]5.7 mmol [L.sup.-1] and HC[O.sub.3] was 17.7[+ or -]5.1 mmol [L.sup.-1].
(1,2) Traditionally, acid-base status is assessed with an arterial blood gas
(ABG); however, venous blood samples are frequently taken for other reasons.
The purpose of this study was to investigate the correlation between simultaneous arterial blood gas
and arterialised earlobe blood samples and to establish whether pH, partial pressure of oxygen (P[O.sub.2]), partial pressure of carbon dioxide (pC[O.sub.2]), base excess (BE) and bicarbonate (HC[O.sub.3]-) values of arterialised earlobe blood samples could accurately predict their arterial blood gas
analogues for patients with acute respiratory failure treated by mechanical ventilation in an intensive care unit (ICU).
With reference to this, in our study, arterial blood gas
samples were taken from the rats 30 min after methanol administration to check for the development of metabolic acidosis.
A severe increase was suspected in MetHb concentration because Sp[O.sub.2] remained at 75% although the concentration of inspired oxygen was 100%; a solution of 2500 mg ascorbic acid in 500 ml 5% dextrose was administered to the patient intravenously until the arterial blood gas
results were obtained.
Parameter Predialysis Postdialysis p-value PH 7,41 (7,39 - 7,44) 7,51 (7,49 - 7,54) <0,01 PaC02 35,2 (31,9 - 37,8) 33,5 (30,4 - 34,7) <0,01 HC03 21,7 (20,4 - 23,4) 25,4 (24,7 - 26,6) <0,01 Pa02 65,2 (60,8 - 74,4) 68,4 (63,4 - 76,6) 0,096 BE -2,8 (-4,4 - 0,6) 2,4 (1,2 - 3,8) <0,01 S02 93,3 (91,5 - 95,3) 95,4 (94,6 - 96,4) <0,01 Table 3: Arterial blood gas
interpretation with MIS * score and nPCR ([dagger]) values.
operating rooms, intensive care units and emergency departments in patients in whom there is a need for continuous invasive blood pressure monitoring and arterial blood gas
Differences between 37.5[degrees]C and 41.5[degrees]C arterial blood gas
data were analyzed by Wilcoxon signed-rank test.
Changes of respiratory function indexes and arterial blood gas
indexes of patients in the two groups were compared.