title: [Correlation between the area of arterial blood gases graph and the acid-base disturbance in 92 cases with chronic obstructive pulmonary disease].
abstract: OBJECTIVE
  To study the correlation between the area of arterial blood gases graph (ABGG) and the acid-base disturbance (ABD).
  
  
  METHODS
  Using the software developed by ourselves, the results of arterial blood gases and concomitant electrolyte (K(+), Na(+), Cl(-), HCO(3)(-)) determination in 313 episodes were analyzed in 92 cases with chronic obstructive pulmonary diseases (COPD) during hospitalization, and the correlation was studied.
  
  
  RESULTS
  (1)On admission, among 92 cases, in 9 cases the results of blood gas analysis were in the area of compensated ventilation and deranged gas exchange (area IV), in 82 cases the results were in the area of insufficient ventilation and deranged gas exchange (area V), and 1 case in the area of excessive ventilation and deranged gas exchange (area VI). There were 8 types of the ABDs, and respiratory acidosis (RAC)+metabolic alkalosis (MAL), RAC, RAC+metabolic acidosis (MAC) with increase in anion gap (AG) ranked in above order. (2)At the time of discharge, in 2 cases the distribution of ABGG was in the normal area (area I), 5 cases in the area IV, 20 cases in the area V, and 1 case in the area VI. There were 5 types of the ABDs. RAC+MAL and RAC ranked in the first two positions. (3)During hospitalization, the correlations between the area of ABGG and ABD in 313 episodes were as follows: ABD normal and MAC of AG increased in the area I; ABD normal and MAL, MAC with AG increased, RAC+MAC, respiratory alkalosis (RAL)+MAL, MAL+MAC of AG increased, RAC+MAL+MAC of AG increased and RAL+MAL+MAC of AG increased in the area IV; RAC, MAL, RAC+MAL, RAC+MAC of AG increased, MAL+MAC of AG increased, and RAC+MAL+MAC of AG increased in the area V; MAC of AG increased, RAC+MAC, RAL+MAL, MAL+MAC of AG increased, and RAL+MAL+MAC of AG increased in the area VI. No ABD occurred in the areas II and III.
  
  
  CONCLUSIONS
  The correlation between ABGG and ABD can be analyzed easily and quickly and the accuracy of results is ensured by using the software.
authors.affiliation: The Second Affiliated Hospital of Nantong Medical College, Nantong 226001, Jiangsu, China.
authors.forename: Jian-rong
authors.initials: JR
authors.lastname: Chen
authors.forename: Ying-yun
authors.initials: YY
authors.lastname: Cai
authors.forename: Xiao-qian
authors.initials: XQ
authors.lastname: Xie
authors.forename: Jia-yi
authors.initials: JY
authors.lastname: Chen
authors.forename: Yang
authors.initials: Y
authors.lastname: Cao
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.forename: Yi-jiang
authors.initials: YJ
authors.lastname: Tao
mesh_terms: D000136:Acid-Base Equilibrium; D000137:Acid-Base Imbalance / Q000097:blood / Q000175:diagnosis* / Q000209:etiology; D000368:Aged; D000369:Aged, 80 and over; D001784:Blood Gas Analysis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive / Q000097:blood* / Q000150:complications; D012984:Software