In another study comparing morphine-bupivacaine vs. hydromorphone-bupivacaine in order to assess tolerability to epidural analgesia and adverse effects resulting from the opioid used, no statistically significant differences were found in terms of the presence of nausea, vomiting, sedation, pruritus or urinary retention, described all together as tolerability.
En otro estudio que comparaba la morfina-bupivacaína vs hidromorfona bupivacaína para evaluar la tolerabilidad a la analgesia epidural y efectos adversos derivados del opioide usado no se hallaron diferencias estadísticamente significativas en la presencia de náuseas, vómitos, sedación, prurito o retención urinaria, descritas globalmente como tolerabilidad.