Prevention of descending pneumonia in rts with perflubron-delivered tobramycin.

Prevention of descending pneumonia in rts with perflubron-delivered tobramycin.
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使用全氟龙递送的妥布霉素预防 rts 中的下行肺炎。

DOI:
10.1197/s1069-6563(03)00335-x
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发表时间:
2003
期刊:
Academic emergency medicine : official journal of the Society for Academic Emergency Medicine
影响因子:
--
通讯作者:
S. Heard
S. Heard
中科院分区:
--
文献类型:
--
作者:
E. Dickson;G. Doern;L. Trevino;M. Mazzoni;S. Heard

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目标 接受紧急气管插管的患者发生肺炎的风险增加。尽管已经研究了许多减少呼吸机相关性肺炎 (VAP) 的策略,但 VAP 的发病率及其相关死亡率仍然很高。这项研究检验了这样的假设:LiquiVent(Alliance Pharmaceutical,圣地亚哥,CA-LV)递送抗生素(通过喷雾干燥微球-SDM)可以提高下行革兰氏阴性肺炎大鼠模型的存活率。 方法 Wistar 大鼠 (n = 49) 被随机分配接受 1) 预防。什么都没有(控制); 2)。肌肉注射 (IM) 妥布霉素,3)。气管内左心室加 SDM 外壳(车辆),4)。气管内 LV 加 SDM 壳加 IM 妥布霉素,或 5)。气管内 LV 加含 1 mg/kg 妥布霉素的 SDM。所有干预措施均在用 10(8) 个气管内肺炎克雷伯菌菌落形成单位进行细菌攻击前 24 小时进行。十天时的死亡率是唯一的结果指标。通过 Fisher 精确检验和 Bonferroni 校正进行多重比较,将各个组的存活率与对照进行比较。 结果 对照组的所有动物在细菌接种后十天内死于肺炎(0%存活率)。使用肌内注射妥布霉素或 SDM 载体加肌内注射妥布霉素进行预防没有提供任何保护(0% 存活率)。这与接受通过 LV 递送的含妥布霉素 SDM 预处理的队列形成鲜明对比,其中 60% 的动物存活至研究完成 (p < 0.05)。 结论 使用低剂量左心室输送的含有抗生素的 SDM 进行预防,对下行革兰氏阴性肺炎大鼠模型提供了显着的保护作用。这些数据支持这样的假设:全氟化碳气管内抗菌药物可能有助于预防 VAP。
OBJECTIVES Patients undergoing emergent endotracheal intubation are at increased risk for developing pneumonia. Although numerous strategies have been investigated to reduce ventilator-associated pneumonia (VAP), the incidence of VAP and its associated mortality remains high. This investigation tested the hypothesis that LiquiVent (Alliance Pharmaceutical, San Diego, CA-LV) delivered antibiotics (via spray-dried microspheres-SDM) would improve survival in a rat model of descending gram-negative pneumonia. METHODS Wistar rats (n = 49) were randomized to receive prophylaxis with 1). nothing (controls); 2). intramuscular (IM) tobramycin, 3). intratracheal LV plus SDM shells (vehicle), 4). intratracheal LV plus SDM shells plus IM tobramycin, or 5). intratracheal LV plus SDM containing 1 mg/kg of tobramycin. All interventions were given 24 hours before a bacterial challenge with 10(8) colony-forming units of intratracheal Klebsiella pneumoniae. Mortality at ten days was the sole outcome measure. Survival in individual groups was compared with controls by Fisher's exact test with Bonferroni correction for multiple comparisons. RESULTS All animals in the control group died of pneumonia within ten days of bacterial inoculation (0% survival). Prophylaxis with either IM tobramycin or SDM vehicle plus IM tobramycin provided no protection (0% survival). This is in sharp contrast to the cohort receiving pretreatment with tobramycin-containing SDM delivered via LV, in which 60% of the animals survived to study completion (p < 0.05). CONCLUSIONS Prophylaxis with SDM containing antibiotics delivered in low-dose LV provided significant protection in a rat model of descending gram-negative pneumonia. These data support the hypothesis that perfluorocarbon-delivered intratracheal antimicrobials may be useful in the prevention of VAP.
支气管肺泡氧自由基炎症成分预示着支气管肺发育不良。
DOI: 10.1097/00003246-199601000-00008
发表时间: 1996
影响因子: 8.8
作者:
Contreras,M;Hariharan,N;Lewandoski,JR;Ciesielski,W;Koscik,R;Zimmerman,JJ
通讯作者: Zimmerman,JJ