[摘要]"丙泊酚廣泛應(yīng)用于臨床麻醉中,但在靜脈注射時(shí)常產(chǎn)生明顯的注射痛。選擇適當(dāng)?shù)姆椒A(yù)防和減輕丙泊酚注射痛、提高患者的滿意度是麻醉醫(yī)師需要解決的問(wèn)題之一。本文檢索國(guó)內(nèi)外主要數(shù)據(jù)庫(kù),并對(duì)相關(guān)文獻(xiàn)進(jìn)行回顧和總結(jié),重點(diǎn)闡述多種藥物在防治丙泊酚注射痛中的最新研究進(jìn)展,以期為臨床提供一定的理論依據(jù)。
[關(guān)鍵詞]"丙泊酚;注射痛;藥物;防治
[中圖分類號(hào)]"R614""""""[文獻(xiàn)標(biāo)識(shí)碼]"A""""[DOI]"10.3969/j.issn.1673-9701.2024.09.029
丙泊酚又名異丙酚,是一種目前臨床上使用非常廣泛的靜脈麻醉藥物。丙泊酚常用于麻醉誘導(dǎo)和臨床診斷性操作中,具有起效快、誘導(dǎo)平穩(wěn)、可控性強(qiáng)、消除快、患者術(shù)后惡心和嘔吐發(fā)生率低等優(yōu)點(diǎn),但其在靜脈注射時(shí)也會(huì)產(chǎn)生丙泊酚注射痛(propofol"injection"pain,PIP)[1-4]。PIP是臨床麻醉中極為常見(jiàn)的問(wèn)題之一,發(fā)生率為28%~90%;在33項(xiàng)臨床麻醉不滿意結(jié)局中,PIP位居第7,常見(jiàn)于女性外周靜脈注射中,發(fā)生機(jī)制尚未完全明確[5-8]。靜脈大小、注射部位、注射速度、藥物濃度、藥物溫度及同時(shí)使用的藥物等是PIP發(fā)生的影響因素[9]。目前,臨床常采用物理技術(shù)、劑型改良、藥物等多種方法防治PIP,已證實(shí)上述手段均有一定的效果[10]。在眾多防治方法中,藥物防治PIP是臨床上最常用的方法。本文就PIP的藥物防治研究進(jìn)展作一綜述。
1""局部麻醉藥物
局部麻醉藥物通過(guò)阻斷細(xì)胞膜上的鈉離子通道產(chǎn)生局部麻醉作用。利多卡因是一種中效局部麻醉藥,具有起效快、滲透力強(qiáng)、擴(kuò)散范圍廣、血管擴(kuò)張作用不明顯等特點(diǎn)。多項(xiàng)研究顯示,利多卡因可預(yù)防和緩解PIP[11-14]。Tian等[15]研究發(fā)現(xiàn),預(yù)防性靜脈注射0.306mg/kg利多卡因可有效預(yù)防50%低體質(zhì)量患者PIP的發(fā)生,且無(wú)不良反應(yīng)。利多卡因與丙泊酚混合使用可有效減輕PIP癥狀,但二者混合使用可降低丙泊酚脂肪乳液的穩(wěn)定性,從而導(dǎo)致麻醉性能降低[16]。
2""阿片類藥物
阿片類藥物通過(guò)作用于阿片類受體發(fā)揮中樞性鎮(zhèn)痛作用,選擇性地消除或緩解患者的痛覺(jué)。研究發(fā)現(xiàn),舒芬太尼可有效預(yù)防PIP,但其可產(chǎn)生延遲性呼吸抑制等不良反應(yīng)[17]。瑞芬太尼屬于短效阿片類藥物,具有起效迅速、藥效消失快等特點(diǎn)。Kim等[18]發(fā)現(xiàn),瑞芬太尼3ng/ml靶控輸注預(yù)處理可有效減輕成人患者的PIP臨床癥狀,且此劑量的瑞芬太尼不會(huì)導(dǎo)致患者出現(xiàn)明顯的低血壓、心動(dòng)過(guò)緩或胸壁僵硬等。研究發(fā)現(xiàn),納布啡0.1mg/kg和0.15mg/kg預(yù)處理可有效緩解PIP[19-20]。地佐辛既可激動(dòng)κ受體,又可拮抗μ受體,具有較強(qiáng)的鎮(zhèn)痛作用,小劑量地佐辛可使手術(shù)過(guò)程更加平穩(wěn),有效減輕患者術(shù)后腹痛所引起的煩躁感,且不會(huì)產(chǎn)生明顯的呼吸抑制等不良反應(yīng)。張忠其等[21]研究發(fā)現(xiàn),靜脈注射丙泊酚前60s時(shí),給予患者靜脈注射地佐辛2mg,可緩解約95%女性患者的PIP癥狀。
3""非甾體抗炎藥
非甾體抗炎藥通過(guò)抑制環(huán)氧化酶的表達(dá),降低前列腺素的合成,減少激肽級(jí)聯(lián)反應(yīng),具有消炎、鎮(zhèn)痛的作用[22]。在靜脈注射丙泊酚前,預(yù)給氟比洛芬酯可減少丙泊酚的使用劑量,且可穩(wěn)定患者的血流動(dòng)力學(xué),提高麻醉質(zhì)量,不良反應(yīng)少[23]。另有研究發(fā)現(xiàn),聯(lián)用氟比洛芬酯和利多卡因減輕PIP的效果優(yōu)于單用氟比洛芬酯或利多卡因[24]。替諾昔康20mg預(yù)處理亦可有效降低PIP的發(fā)生率,緩解其嚴(yán)重程度[25]。
4""α2腎上腺素受體激動(dòng)劑
右美托咪定是一種選擇性較高的α2腎上腺素受體激動(dòng)劑,兼具鎮(zhèn)靜催眠、鎮(zhèn)痛、抗焦慮等作用[26-28]。練勝?gòu)?qiáng)等[29]研究發(fā)現(xiàn),右美托咪定在胃鏡檢查時(shí)滴鼻使用可減輕PIP,也可減少丙泊酚的使用劑量,不良反應(yīng)少,使用方法簡(jiǎn)便。小劑量(<0.5μg/kg)右美托咪定預(yù)防PIP的效果好,且不會(huì)增加不良反應(yīng)的發(fā)生率[30];右美托咪定聯(lián)合氟比洛芬酯也可有效降低PIP的發(fā)生率[31]。
5""其他麻醉藥物
氯胺酮通過(guò)阻斷血管內(nèi)皮細(xì)胞N-甲基-D-天冬氨酸受體發(fā)揮局部麻醉作用。Seifu等[32]研究發(fā)現(xiàn)小劑量氯胺酮可有效緩解PIP;嚴(yán)重高血壓、癲癇及精神病等患者禁用氯胺酮。艾司氯胺酮是一種右旋體氯胺酮,具有更強(qiáng)的鎮(zhèn)痛作用,其用量?jī)H為氯胺酮的1/2,且有益于患者術(shù)中的循環(huán)穩(wěn)定性[33]。研究發(fā)現(xiàn),其抑制PIP的半數(shù)有效劑量為0.135mg/kg,95%有效劑量為0.170mg/kg[34]。瑞馬唑侖是一種起效快、失效快的苯二氮?類鎮(zhèn)靜劑,其預(yù)處理可減輕PIP的發(fā)生和強(qiáng)度,與利多卡因相當(dāng),且無(wú)嚴(yán)重不良反應(yīng)[35]。硫噴妥鈉因不良反應(yīng),目前臨床上已很少使用。此外,曲馬多是一種非阿片類中樞性鎮(zhèn)痛藥,也可有效緩解PIP,且有生命體征平穩(wěn)、不良反應(yīng)少等優(yōu)點(diǎn),但其可能導(dǎo)致惡心、嘔吐,可通過(guò)稀釋曲馬多的濃度和減緩給藥速度防止不良反應(yīng)的發(fā)生[36]。
6""其他藥物
止嘔藥物(如昂丹司瓊)通過(guò)拮抗5-羥色胺受體發(fā)揮作用。既往研究表明,昂丹司瓊、帕洛諾司瓊等可減輕部分PIP,同時(shí)可預(yù)防術(shù)后惡心、嘔吐的發(fā)生[37-38]。糖皮質(zhì)激素藥如地塞米松,其皮質(zhì)類固醇的作用已被證明可減少一氧化氮的產(chǎn)生,從而減輕注射痛[2]。但臨床工作中應(yīng)嚴(yán)格規(guī)范使用糖皮質(zhì)激素。研究發(fā)現(xiàn),格拉司瓊(1mg)和地塞米松(0.15mg/kg)預(yù)處理可降低PIP的發(fā)生率并減輕嚴(yán)重程度[39]。另有研究發(fā)現(xiàn),100ml"6%羥乙基淀粉預(yù)給藥也可緩解注射痛[40]。但需注意膠體液可增加患者發(fā)生過(guò)敏的風(fēng)險(xiǎn)。
7""小結(jié)
PIP是臨床常見(jiàn)問(wèn)題之一,其機(jī)制尚未完全明確。PIP往往使患者情緒緊張并產(chǎn)生恐懼心理。研究證實(shí)多種藥物可用于預(yù)防和減輕PIP,但仍無(wú)法徹底消除PIP。如何在更大程度上預(yù)防和減輕PIP是臨床麻醉醫(yī)師需要解決的問(wèn)題。在臨床工作中,結(jié)合患者的個(gè)體差異,根據(jù)各種藥物的適應(yīng)證和禁忌證,合理選擇藥物防治PIP,減輕患者麻醉時(shí)的痛苦,增加患者的舒適感和滿意度。
利益沖突:所有作者均聲明不存在利益沖突。
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(收稿日期:2023–09–13)
(修回日期:2024–03–02)