Abstract:
:Despite the increasing use of a variety of different analgesic strategies, opioids continue as the mainstay for management of moderate to severe acute pain. However concerns remain about their potential adverse effects on ventilation. The most commonly used term, respiratory depression, only describes part of that risk. Opioid-induced ventilatory impairment (OIVI) is a more complete term encompassing opioid-induced central respiratory depression (decreased respiratory drive), decreased level of consciousness (sedation) and upper airway obstruction, all of which, alone or in combination, may result in decreased alveolar ventilation and increased arterial carbon dioxide levels. Concerns about OIVI are warranted, as deaths related to opioid administration in the acute pain setting continue to be reported. Risks are often said to be higher in patients with obstructive sleep apnoea. However, the tendency to use the term 'obstructive sleep apnoea' to encompass the much broader spectrum of sleep- and obesity-related hypoventilation syndromes and the related misuse of terminology in papers relating to obstructive sleep apnoea and sleep-disordered breathing remain significant problems in discussions of opioid-related effects. Opioids given for management of acute pain must be titrated to effect for each patient. However strategies aiming for better pain scores alone, without highlighting the need for appropriate monitoring of OIVI, can and will lead to an increase in adverse events. Therefore, all patients must be monitored appropriately for OIVI (at the very least using sedation scores as a '6th vital sign') so that it can be detected at an early stage and appropriate interventions triggered.
journal_name
Anaesth Intensive Carejournal_title
Anaesthesia and intensive careauthors
Macintyre PE,Loadsman JA,Scott DAdoi
10.1177/0310057X1103900405subject
Has Abstractpub_date
2011-07-01 00:00:00pages
545-58issue
4eissn
0310-057Xissn
1448-0271pii
20110161journal_volume
39pub_type
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journal_title:Anaesthesia and intensive care
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