British Journal of Anaesthesia, 2001, Vol. 87, No. 3 499-501
© 2001 The Board of Management and Trustees of the British Journal of Anaesthesia
Short Communications |
Haemodynamic effects of three doses of dihydroergotamine during spinal anaesthesia
Department of Anaesthesia and Intensive Care, Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong, SAR, China*Corresponding author
We performed a randomized study comparing the haemodynamic effects of three doses of the vasopressor dihydroergotamine (DHE) (5, 10 and 15 µg kg1) in 30 ASA 1 and 2 patients, aged 5387 yr, undergoing spinal anaesthesia. Non-invasive systolic arterial pressure (SAP), heart rate and central venous pressure (CVP) were recorded continuously for 25 min. Intravenous fluids were withheld during this period. All three doses of DHE reversed the lowering effects of spinal anaesthesia on SAP and CVP (P<0.0001), and these effects were smooth in onset and sustained. Whereas the lowest (5 µg kg1) dose restored SAP and CVP to near prespinal values, the higher (10 and 15 µg kg1) doses resulted in above-baseline increases in SAP of 7% and in CVP of 2.7 cm H2O (P<0.05). The haemodynamic profile of DHE makes it a useful agent for managing hypotension during spinal anaesthesia. A dose of 510 µg kg1 is recommended.
Br J Anaesth 2001; 87: 499501