Vascular anaesthesia at the beginning of the third millenium
Michálek P.1, 2, Stern M.3, Kubricht V.3, Šoupal J.4
1Dept. of Anaesthetics, Antrim Area Hospital, Antrim, United Kingdom 2IPVZ, Praha, Česká republika 3Úsek kardiovaskulární anestezie a intenzivní péče, Nemocnice Na Homolce, Praha, Česká republika 4Dept. of Cardiothoracic Anesthesia, Washington University Hospital, St. Louis, Missouri, USA |
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Summary:
Anaesthesia for vascular surgery has been developing rapidly in the last decade, simultaneously with surgery.
The anaesthetist must master a broad spectre of manual skills and theoretical knowledge. Pulmonary
artery catheters and/or transoesophageal echocardiography are frequently used in aortic surgery to
monitor the haemodynamics. Another option is to estimate cardiac output by analysis of the arterial pressure
curve. Monitoring of the neurological function of the brain and spinal cord is necessary in carotid surgery
and descending aortic procedures. Haemocoagulation disorders are monitored using thrombelastography
and Sonoclot. In this article the authors discuss the choice of anaesthesia for carotid surgery. A
clear benefit of either regional or general anaesthesia has not been manifested. The use of dexmedetomidine
for conscious sedation during these procedures under regional anaesthesia is discussed, as well as
the options for decreasing cardiac morbidity and mortality. Anaesthesia for procedures on the abdominal,
descending and thoraco-abdominal aorta is reviewed with a special consideration for the pathophysiological
changes associated with aortic cross-clamping. Organ preservation below the clamp level is a very
important part of perioperative care. The authors discuss the current options of non-dependent lung ventilation
in descending aortic surgery including high-frequency jet ventilation, as well as the up-to-date approach
to the preservation of the spinal cord function. Catastrophic events in vascular surgery include
a ruptured aortic aneurysm, a ruptured aortic aneurysm with previously inserted stentgraft, repair of aorto-
caval fistula, acute obtruction of the abdominal aorta and emergency vascular procedures in the patient
with cardiac failure. These procedures carry a high mortality rate despite adequate perioperative care.
Novel trends are being developed in vascular surgery to decrease the invasiveness of the procedure. Other
objectives in the development of new methods include decreasing the perioperative morbidity and mortality
rates and reducing the length of hospital stay. These procedures include endovascular and endoscopic
vascular procedures, radiofrequency sympathectomies and combined cardiac-vascular procedures.
Key words:
haemodynamic monitoring – neuromonitoring – thrombelastography – carotid surgery – aortic
procedures – infrainguinal vascular procedures – emergency procedures – endovascular surgery –
endoscopic vascular surgery
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