Arterial blood gas analysis - Revision history

Danbot: Add Category:Labs

2026-03-22T06:43:57Z

← Revisión anterior		Revisión del 06:43 22 mar 2026
Línea 66:		Línea 66:
	[[Category:Critical Care]]		[[Category:Critical Care]]
	[[Category:Pulmonary]]		[[Category:Pulmonary]]
			[[Category:Labs]]

ClaireLewis at 15:30, 11 October 2019

2019-10-11T15:30:22Z

← Revisión anterior		Revisión del 15:30 11 oct 2019
Línea 2:		Línea 2:
	==='''pH'''===		==='''pH'''===
	*Measurement of acidity or alkalinity of solution . The normal range is 7.35 to 7.45		*Measurement of acidity or alkalinity of solution . The normal range is 7.35 to 7.45
	*pH > 7.45 = alkalosis		*pH > 7.45 = [[alkalosis]]
	*pH< 7.35 = acidosis		*pH< 7.35 = [[acidosis]]
	==='''PaO<sub>2</sub>'''===		==='''PaO<sub>2</sub>'''===
	*The partial pressure of oxygen that is dissolved in the arterial serum that is ''not'' carried by hemoglobin. The normal range is 80 to 100 mm Hg.		*The partial pressure of oxygen that is dissolved in the arterial serum that is ''not'' carried by hemoglobin. The normal range is 80 to 100 mm Hg.
	**Used to assess alveolar-arterial (A-a) gradient, or [[P<sub>a</sub>O<sub>2</sub>/FiO<sub>2</sub> ratio]].		**Used to assess alveolar-arterial (A-a) gradient, or [[P<sub>a</sub>O<sub>2</sub>/FiO<sub>2</sub> ratio]].
	==='''SaO<sub>2</sub>'''===		==='''SaO<sub>2</sub>'''===
	The arterial oxygen saturation. The normal range is 95% to 100%.		*The arterial oxygen saturation
			*The normal range is 95% to 100%.

	==='''pCO<sub>2</sub>'''===		==='''pCO<sub>2</sub>'''===
	*The amount of carbon dioxide dissolved in arterial blood. The normal range is 35 to 45 mm Hg.		*The amount of carbon dioxide dissolved in arterial blood
	*pCO<sub>2</sub> >45 = primary respiratory acidosis		*The normal range is 35 to 45 mm Hg.
	*pCO<sub>2</sub> <35 = primary respiratory alkalosis		*pCO<sub>2</sub> >45 = primary [[respiratory acidosis]]
			*pCO<sub>2</sub> <35 = primary [[respiratory alkalosis]]

	==='''HCO<sub>3</sub>'''===		==='''HCO<sub>3</sub>'''===
	The calculated value of the amount of bicarbonate in the bloodstream. The normal range is 22 to 26 mEq/liter		*The calculated value of the amount of bicarbonate in the bloodstream
	HCO3 > 26 = alkalosis		*The normal range is 22 to 26 mEq/liter
	HCO3 < 22 = acidosis		*HCO3 > 26 = [[alkalosis]]
			*HCO3 < 22 = [[acidosis]]

	==='''B.E.'''===		==='''B.E.'''===
Línea 26:		Línea 29:


	==ABG in Hypothermia==		==ABG in [[Hypothermia]]==
	*Blood gas analyzers typically warm blood to 37°C before making calculations however physicians should simply interpret the values as given by the lab		*Blood gas analyzers typically warm blood to 37°C before making calculations however physicians should simply interpret the values as given by the lab
	*At any temperature, a pH of 7.4 and a PCO2 of 40 mm Hg represent normal acid-base balance		*At any temperature, a pH of 7.4 and a PCO2 of 40 mm Hg represent normal acid-base balance
Línea 35:		Línea 38:
	*PCO2 is 2mmHg lower for each degree below 37C°		*PCO2 is 2mmHg lower for each degree below 37C°

	==ABG after Cardiac Arrest==		==ABG after [[Cardiac Arrest]]==
	pH of blood dependent on:		pH of blood dependent on:
	*cause of arrest		*cause of arrest
Línea 49:		Línea 52:
	*insufficient oxygenation during resuscitation		*insufficient oxygenation during resuscitation
	*aspiration		*aspiration
	*pulmonary edema		*[[pulmonary edema]]
	*PE		*[[PE]]
	*primary respiratory pathology		*primary respiratory pathology

Rossdonaldson1: Rossdonaldson1 moved page ABG interpretation to Arterial blood gas analysis

2018-08-12T22:38:32Z

Rossdonaldson1 moved page ABG interpretation to Arterial blood gas analysis

← Revisión anterior	Revisión del 22:38 12 ago 2018
(Sin diferencias)

Chungirv: /* pCO2 */

2017-08-03T14:26:48Z

pCO2

← Revisión anterior		Revisión del 14:26 3 ago 2017
Línea 12:		Línea 12:
	==='''pCO<sub>2</sub>'''===		==='''pCO<sub>2</sub>'''===
	*The amount of carbon dioxide dissolved in arterial blood. The normal range is 35 to 45 mm Hg.		*The amount of carbon dioxide dissolved in arterial blood. The normal range is 35 to 45 mm Hg.
	*pCO<sub>2</sub> >45 = acidosis		*pCO<sub>2</sub> >45 = primary respiratory acidosis
	*pCO<sub>2</sub> <35 = alkalosis		*pCO<sub>2</sub> <35 = primary respiratory alkalosis

	==='''HCO<sub>3</sub>'''===		==='''HCO<sub>3</sub>'''===

Chungirv: /* PaO2 */

2017-08-03T14:17:35Z

PaO2

← Revisión anterior		Revisión del 14:17 3 ago 2017
Línea 5:		Línea 5:
	*pH< 7.35 = acidosis		*pH< 7.35 = acidosis
	==='''PaO<sub>2</sub>'''===		==='''PaO<sub>2</sub>'''===
	The partial pressure of oxygen that is dissolved in arterial ~~blood~~. The normal range is 80 to 100 mm Hg.		*The partial pressure of oxygen that is dissolved in the arterial serum that is ''not'' carried by hemoglobin. The normal range is 80 to 100 mm Hg.
	'''SaO<sub>2</sub>'''		**Used to assess alveolar-arterial (A-a) gradient, or [[P<sub>a</sub>O<sub>2</sub>/FiO<sub>2</sub> ratio]].
			==='''SaO<sub>2</sub>'''===
	The arterial oxygen saturation. The normal range is 95% to 100%.		The arterial oxygen saturation. The normal range is 95% to 100%.

	==='''pCO<sub>2</sub>'''===		==='''pCO<sub>2</sub>'''===
	*The amount of carbon dioxide dissolved in arterial blood. The normal range is 35 to 45 mm Hg.		*The amount of carbon dioxide dissolved in arterial blood. The normal range is 35 to 45 mm Hg.

Jshupe: typo

2016-10-22T17:32:20Z

typo

← Revisión anterior		Revisión del 17:32 22 oct 2016
Línea 31:		Línea 31:
	Oxygen and carbon dioxide increase in solubility as water temperature lowers, so warmed ABGs from hypothermic patients with show a higher PaO2, higher PaCO2 and a lower pH than what is actually present in the patient’s blood although the clinical implications of this change is not significant.<ref>Ashwood ER, Kost G, Kenny M. Temperature correction of blood-gas and pH measurements. Clin Chem. 1983 Nov;29(11):1877-85. Review. PubMed PMID: 6354511.</ref>		Oxygen and carbon dioxide increase in solubility as water temperature lowers, so warmed ABGs from hypothermic patients with show a higher PaO2, higher PaCO2 and a lower pH than what is actually present in the patient’s blood although the clinical implications of this change is not significant.<ref>Ashwood ER, Kost G, Kenny M. Temperature correction of blood-gas and pH measurements. Clin Chem. 1983 Nov;29(11):1877-85. Review. PubMed PMID: 6354511.</ref>
	*PO2 is 5 mmHg lower for each degree below 37C°		*PO2 is 5 mmHg lower for each degree below 37C°
	*PCO2 is 2mmHg ~~lover~~ for each degree below 37C°		*PCO2 is 2mmHg lower for each degree below 37C°

	==ABG after Cardiac Arrest==		==ABG after Cardiac Arrest==

Rossdonaldson1: /* TEMPERATURE CORRECTION OF PO2 and PCO2 */

2016-07-30T10:01:40Z

TEMPERATURE CORRECTION OF PO2 and PCO2

← Revisión anterior		Revisión del 10:01 30 jul 2016
Línea 31:		Línea 31:
	Oxygen and carbon dioxide increase in solubility as water temperature lowers, so warmed ABGs from hypothermic patients with show a higher PaO2, higher PaCO2 and a lower pH than what is actually present in the patient’s blood although the clinical implications of this change is not significant.<ref>Ashwood ER, Kost G, Kenny M. Temperature correction of blood-gas and pH measurements. Clin Chem. 1983 Nov;29(11):1877-85. Review. PubMed PMID: 6354511.</ref>		Oxygen and carbon dioxide increase in solubility as water temperature lowers, so warmed ABGs from hypothermic patients with show a higher PaO2, higher PaCO2 and a lower pH than what is actually present in the patient’s blood although the clinical implications of this change is not significant.<ref>Ashwood ER, Kost G, Kenny M. Temperature correction of blood-gas and pH measurements. Clin Chem. 1983 Nov;29(11):1877-85. Review. PubMed PMID: 6354511.</ref>
	*PO2 is 5 mmHg lower for each degree below 37C°		*PO2 is 5 mmHg lower for each degree below 37C°
	*PCO2 is 2mmHg lover for each ~~debree~~ below 37C°		*PCO2 is 2mmHg lover for each degree below 37C°

	==ABG after Cardiac Arrest==		==ABG after Cardiac Arrest==

Rossdonaldson1: /* ABG in Hypothermia */

2016-07-30T10:01:28Z

ABG in Hypothermia

← Revisión anterior		Revisión del 10:01 30 jul 2016
Línea 32:		Línea 32:
	*PO2 is 5 mmHg lower for each degree below 37C°		*PO2 is 5 mmHg lower for each degree below 37C°
	*PCO2 is 2mmHg lover for each debree below 37C°		*PCO2 is 2mmHg lover for each debree below 37C°


	==ABG after Cardiac Arrest==		==ABG after Cardiac Arrest==

Rossdonaldson1: /* ABG after Cardiac Arrest */

2016-07-30T10:01:17Z

ABG after Cardiac Arrest

← Revisión anterior		Revisión del 10:01 30 jul 2016
Línea 36:		Línea 36:
	==ABG after Cardiac Arrest==		==ABG after Cardiac Arrest==
	pH of blood dependent on:		pH of blood dependent on:
	#cause of arrest		*cause of arrest
	#duration of arrest when ABG is taken		*duration of arrest when ABG is taken
	#the quality of the CPR and ventilation the patient is receiving		*the quality of the CPR and ventilation the patient is receiving
	#temperature of the patient when ABG taken		*temperature of the patient when ABG taken
	#drugs administered during arrest (ie. Adrenaline and NaHCO3)		*drugs administered during arrest (ie. Adrenaline and NaHCO3)

	'''Elevated pCO<sub>2</sub>'''		'''Elevated pCO<sub>2</sub>'''
	#often due to inadequate ventilation during resuscitation		*often due to inadequate ventilation during resuscitation

	'''Low PaO2'''		'''Low PaO2'''
	~~#insufficent~~ oxygenation during resuscitation		*insufficient oxygenation during resuscitation
	#aspiration		*aspiration
	#pulmonary ~~oedema~~		*pulmonary edema
	#PE		*PE
	#primary respiratory pathology		*primary respiratory pathology

	'''[[Hyperkalemia]] Causes'''		'''[[Hyperkalemia]] Causes'''
	#cell death		*cell death
	#loss of cell membrane integrity and acidosis		*loss of cell membrane integrity and acidosis
	#other sources such as missed dialysis		*other sources such as missed dialysis

	==References==		==References==

Neil.m.young: Text replacement - "* " to "*"

2016-07-09T14:49:11Z

Text replacement - "* " to "*"

← Revisión anterior		Revisión del 14:49 9 jul 2016
Línea 30:		Línea 30:
	===TEMPERATURE CORRECTION OF PO2 and PCO2===		===TEMPERATURE CORRECTION OF PO2 and PCO2===
	Oxygen and carbon dioxide increase in solubility as water temperature lowers, so warmed ABGs from hypothermic patients with show a higher PaO2, higher PaCO2 and a lower pH than what is actually present in the patient’s blood although the clinical implications of this change is not significant.<ref>Ashwood ER, Kost G, Kenny M. Temperature correction of blood-gas and pH measurements. Clin Chem. 1983 Nov;29(11):1877-85. Review. PubMed PMID: 6354511.</ref>		Oxygen and carbon dioxide increase in solubility as water temperature lowers, so warmed ABGs from hypothermic patients with show a higher PaO2, higher PaCO2 and a lower pH than what is actually present in the patient’s blood although the clinical implications of this change is not significant.<ref>Ashwood ER, Kost G, Kenny M. Temperature correction of blood-gas and pH measurements. Clin Chem. 1983 Nov;29(11):1877-85. Review. PubMed PMID: 6354511.</ref>
	* PO2 is 5 mmHg lower for each degree below 37C°		*PO2 is 5 mmHg lower for each degree below 37C°
	* PCO2 is 2mmHg lover for each debree below 37C°		*PCO2 is 2mmHg lover for each debree below 37C°