Patterns of oxygenation after thoracotomy.

Abstract:

:We have studied patterns of oxygen saturation (SpO2) before and after thoracotomy in 20 patients monitored nightly from the preoperative night to the fourth postoperative night. After operation, 10 patients received paravertebral bupivacaine (PVB) infusion and 10 received paravertebral saline (PVS) infusion. Papaveretum was given as required. Before operation the SpO2 profiles formed two groups: stable with SpO2 greater than 94% and stable with a median SpO2 less than 94% (hypoxaemia). During the first night after operation SpO2 profiles formed four groups: stable, not hypoxaemic (2/20); stable, hypoxaemic but improving (8/20); stable and constant hypoxaemia (5/20); unstable, hypoxaemic and deteriorating (5/20). Eleven patients remained hypoxaemic as late as the fourth night after operation. All patients who were hypoxaemic before operation were hypoxaemic after operation. Postoperative hypoxaemia was predicted in only 50% of cases. Papaveretum requirement was reduced in the PVB group, but regional analgesia did not affect the proportion of patients showing each SpO2 profile. Papaveretum caused a decrease in SpO2 in both analgesic groups.

journal_name

Br J Anaesth

authors

Entwistle MD,Roe PG,Sapsford DJ,Berrisford RG,Jones JG

doi

10.1093/bja/67.6.704

subject

Has Abstract

pub_date

1991-12-01 00:00:00

pages

704-11

issue

6

eissn

0007-0912

issn

1471-6771

pii

S0007-0912(17)47840-8

journal_volume

67

pub_type

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