title: [The importance of PaO2 and PaCO2 values in the perioperative care of geriatric patients].
abstract: Because of the generally accepted operability of patients without any age limit nowadays, more information is needed about functional disorders of organs, for example of the lung in old age. The preoperative PaO2 value at rest in 120 patients due to undergo urological operations (average age 77.7 +/- 4.6 years) was determined as 81.81 +/- 8.63 mmHg. The PaO2 values corresponding to age were significantly higher than the reference values in literature. During cholecystectomy the respiratory volume per minute at an FECO2 of 4.5 vol.% was measured as 6.6 +/- 1.41 l/min in 54 patients with an average age of 68.7 +/- 5.8 years. There was no correlation with any anthropometrical data. Considerable fluctuations in the respiratory volume per minute make the measure of FECO2 and PaCO2 necessary. In old age the cerebral blood flow rate depends on PaCO2, so that a normocapnia is of particular importance. Similar results were found in 20 traumatologic patients aged over 80, i.e. there were considerable differences between tabular values and capnometrically controlled respiratory volume per minute. The blood gas values were measured in 50 patients over 65 years old in the immediate postoperative phase of cholecystectomy. Compared with initial values, there was a significant decrease in PaO2 at 5, 15 and 25 minutes after the operation with values at 8.22 +/- 1.83 kPa, 8.24 +/- 1.83 kPa and 8.15 +/- 1.75 kPa. These values were 27% under the preoperative values. No clinically discernible hypoxia occurred. The results support the demand that geriatric patients be given suitable attention and adequate monitoring to avoid complications due to the restricted compensationability of the organs and lungs.
authors.affiliation: Klinik für Anästhesiologie und Intensivtherapie des Städtischen Krankenhauses im Friedrichshain, Berlin.
authors.forename: H D
authors.initials: HD
authors.lastname: Stober
authors.forename: V
authors.initials: V
authors.lastname: Eisenmann
authors.forename: G
authors.initials: G
authors.lastname: Röhr
authors.forename: B
authors.initials: B
authors.lastname: Eckert
authors.forename: M
authors.initials: M
authors.lastname: Gründler
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002245:Carbon Dioxide / Q000502:physiology*; D015577:Geriatric Assessment; D006801:Humans; D008875:Middle Aged; D010100:Oxygen / Q000502:physiology*; D010313:Partial Pressure; D013514:Surgical Procedures, Operative
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen
vernacular_title: Zur Frage der Bedeutung des PaO2-und des PaCO2-Wertes bei der perioperativen Versorgung geriatrischer Patienten.