Effects of Gas Exchange on Acid-Base Balance

2012 ◽  
Author(s):  
Michael I. Lindinger ◽  
George J.F. Heigenhauser
Keyword(s):  
Gas Exchange ◽  
Acid Base Balance ◽  
Acid Base ◽  
Base Balance

scholarly journals Ion Regulation, Acid/Base Balance and Gas Exchange Interactions in Salmon Across Salinities

2019 ◽  
Vol 33 (S1) ◽  
Author(s):  
Christian Damsgaard ◽  
Monica McGrath ◽  
Chris M. Wood ◽  
Jeffrey G. Richards ◽  
Colin J. Brauner
Keyword(s):  
Gas Exchange ◽  
Exchange Interactions ◽  
Acid Base Balance ◽  
Acid Base ◽  
Ion Regulation ◽  
Base Balance

Arterial Blood Gases, Acid-Base Balance, and Lactate and Gas Exchange Variables During Hypoxic Exercise

1989 ◽  
Vol 10 (04) ◽  
pp. 279-285 ◽  
Author(s):  
T. Yoshida ◽  
M. Udo ◽  
M. Chida ◽  
K. Makiguchi ◽  
M. Ichioka ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Blood Gases ◽  
Arterial Blood Gases ◽  
Acid Base Balance ◽  
Acid Base ◽  
Arterial Blood ◽  
Base Balance ◽  
Hypoxic Exercise

ADJUSTMENT OF VENTILATION, INTRAPULMONARY GAS EXCHANGE, AND ACID-BASE BALANCE DURING THE FIRST DAY OF LIFE

PEDIATRICS ◽  
1964 ◽  
Vol 33 (5) ◽  
pp. 682-693
Author(s):  
L. Samuel Prod'hom ◽  
Henry Levison ◽  
Ruth B. Cherry ◽  
James E. Drorbaugh ◽  
John P. Hubbell ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Respiratory Distress ◽  
Respiratory Acidosis ◽  
Acid Base Balance ◽  
Acid Base ◽  
Infants Of Diabetic Mothers ◽  
Arterial Blood ◽  
Physiologic Dead Space ◽  
Base Balance ◽  
Diabetic Mothers

Determinations of blood gases and of acid-base balance were done in umbilical vein and artery blood at birth and in arterial blood at the age of 20 minutes in 20 infants of diabetic mothers. All were born by cesarean section, 18 of them between 36 and 37 weeks gestation. None showed respiratory distress at any time. Ventilation, gaseous metabolism, functional residual capacity, intrapulmonary gas exchange, and acid-base balance were determined at the age of 1, 4, and 24 hours in these 20 infants. The results indicate the following conclusions with regard to infants of diabetic mothers. 1. Adjustment of ventilation to perfusion in the lung appears to be complete at 4 hours of life. 2. Throughout the first 24 hours there is a persistence of an over-all true right to left shunt of approximately 20-25% of the total cardiac output. The exact localization of this shunt is unknown. 3. Acid-base balance in cord blood and in arterial blood during the first day of life in infants of diabetic mothers differs only slightly from that of infants of nondiabetic mothers. At 1 and 4 hours of age there is some persistence of a slight respiratory acidosis. 4. At 24 hours infants of diabetic mothers have the usual low arterial Pco2 of other newborn infants, but a ventilation equivalent of 16.5, which is normal for adults. 5. Although 6 of the 17 infants studied at 4 hours have shown a respiratory rate above 60 without other signs of respiratory distress, these infants with high rates had small tidal volumes, high physiologic dead-space/tidal volume ratios, and relatively little increase in minute volume.

Effect of chronic acetazolamide administration on gas exchange and acid-base control after maximal exercise

1994 ◽  
Vol 76 (3) ◽  
pp. 1211-1219 ◽  
Author(s):  
J. M. Kowalchuk ◽  
G. J. Heigenhauser ◽  
J. R. Sutton ◽  
N. L. Jones
Keyword(s):  
Gas Exchange ◽  
Muscle Power ◽  
Strong Ion Difference ◽  
Acid Base Balance ◽  
Acid Base ◽  
Arterial Lactate ◽  
Arterial Pco2 ◽  
Co2 Output ◽  
Base Balance ◽  
Arterial Plasma

The interaction between systems regulating acid-base balance (i.e., CO2, strong ions, week acids) was studied in six subjects for 10 min after 30 s of maximal isokinetic cycling during control conditions (CON) and after 3 days of chronic acetazolamide (ChACZ) administration (500 mg/8 h po) to inhibit carbonic anhydrase (CA). Gas exchange was measured; arterial and venous forearm blood was sampled for acid-base variables. Muscle power output was similar in ChACZ and CON, but peak O2 intake was lower in ChACZ; peak CO2 output was also lower in ChACZ (2,207 +/- 220 ml/min) than in CON (3,238 +/- 87 ml/min). Arterial PCO2 was lower at rest, and its fall after exercise was delayed in ChACZ. In ChACZ there was a higher arterial [Na+] and lower arterial [lactate-] ([La-]) accompanied by lower arterial [K+] and higher arterial [Cl-] during the first part of recovery, resulting in a higher arterial plasma strong ion difference (sigma [cations] - sigma [anions]). Venoarterial (v-a) differences across the forearm showed a similar uptake of Na+, K+, Cl-, and La- in ChACZ and CON. Arterial [H+] was higher and [HCO3-] was lower in ChACZ. Compared with CON, v-a [H+] was similar and v-a [HCO3-] was lower in ChACZ. Chronic CA inhibition impaired the efflux of CO2 from inactive muscle and its excretion by the lungs and also influenced the equilibration of strong ions.(ABSTRACT TRUNCATED AT 250 WORDS)

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