Hypoxia and myocardial ischaemia during peripheral angioplasty.
We have used continuous ambulatory electrocardiography and concurrent monitoring of arterial oxygen saturation (SpO2) and non-invasive arterial pressure in a pilot study of 29 unsedated patients undergoing percutaneous peripheral vascular angioplasty. Twelve patients (Group 1) received oxygen 41 min-1 by Hudson mask during the procedure, the remaining 17 patients (Group 2) breathing air. Fourteen patients in Group 2 had an SpO2 of 94% or below during the procedure, compared with two patients in Group 1. Episodes of silent ischaemia were recorded during the procedure in one patient in Group 1 and five patients in Group 2. Administration of oxygen significantly reduced the incidence and severity of hypoxaemia, and may be responsible for the reduction in silent ischaemia.
Clarke
F L
FL
Department of Surgical and Anaesthetic Sciences, Royal Hallamshire Hospital, Sheffield.
Woodward
W M
WM
Gaines
P A
PA
Reilly
C S
CS
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000800:Angioplasty, Balloon / Q000009:adverse effects*; D005260:Female; D006801:Humans; D000860:Hypoxia / Q000209:etiology* / Q000517:prevention & control; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000209:etiology* / Q000517:prevention & control; D010100:Oxygen / Q000097:blood; D010102:Oxygen Inhalation Therapy; D010313:Partial Pressure; D010865:Pilot Projects; D012307:Risk Factors
D010100:Oxygen