Increasing evidences show that a gradual trend away from deep hypothermia toward moderate hypothermic circulatory arrest, which has been proved to be safe and effective in clinic. By summarizing and analyzing the research progress and applying status of the moderate hypothermia circulatory arrest with selective antegrade cerebral perfusion, the article aims at promoting the application of this tenique as a cerebral protection strategy in aortic arch surgery for adults in China.
目的 探討在丙泊酚誘導麻醉的改良電休克治療中腦雙頻譜指數(BIS)與動作發作時間的關系，以及其他因素對電休克動作發作時間的影響。 方法 2012年4月－5月，記錄28名患者的107次治療中的不同時刻腦雙頻譜指數（BIS）值誘導前、睫毛反射消失時、治療前即刻、動作發作結束即刻、動作發作結束后60 s）、麻醉藥物劑量、動作發作時間及治療不良反應，并根據動作發作時間將治療分為A組（治療無效組，動作發作時間＜17 s）和B組（治療有效組，動作發作時間≥17 s）。探討不同時刻BIS值與癲癇發作時間的關系并比較A、B組之間BIS值、麻醉藥物劑量差異。 結果 兩組間睫毛反射消失時及治療前即刻BIS值差異有統計學意義（P＜0.05）。動作發作時間與治療前即刻BIS值呈正相關（r=0.245，P=0.012），與治療次數呈負相關（r=?0.283，P=0.004）。 結論 治療前即刻BIS值與動作發作時間呈正相關，因此，此時的BIS值也許可以作為預測動作發作時間長短的指標。
Left ventricular outflow tract obstruction (LVOTO) in Ebstein's anomaly is a rare complication, and LVOTO related to surgery is rarer. We present a 46 years old female patient who was dignosed with Ebstein's anomaly, then suffered from cardiac arrest because of LVOTO secondary to cone reconstruction in ICU.
目的：探討在不同年齡SD大鼠右心房注射前列腺素E2（PGE2）對呼吸的影響。方法：7～9 d和21～23 d大鼠在迷走神經完整和迷走神經切斷的情況下從右心房注射PGE-2，觀察呼吸指標的變化。結果：①右心房注射PGE2在7～9 d和21～23 d大鼠中均引起呼吸暫停，呼氣延長時間分別為基礎呼氣時間的9.5和7.5倍（Plt;0.05）；②切斷迷走神經后，右心房注射PGE-2在7～9 d和21～23 d大鼠均不再產生呼吸暫停，僅出現輕微呼吸抑制。結論：右心房注射PGE2在7～9 d和21～23 d大鼠均產生呼吸暫停，且依賴于迷走神經的完整性。
This study aims to investigate the effect of lung ischemia reperfusion injury (LIRI) on expression of transient receptor potential vanilloid 1 (TRPV1) in the lung and brainstem of rats. Sixteen adult male Sprague Dawley rats weighing 250-320 g were randomly divided into Sham group and ischemia reperfusion group (IR group). Before ischemia, 0.5 hour and 4 hours after the reperfusion, respectively, arterial partial pressure of oxygen (PaO2) and arterial-alveolar oxygen pressure gradient (A-aDO2) were recorded and calculated, respectively. Left lung tissues and the brainstems were obtained at the end of the experiment. Lung tissue malondialdehyde (MDA), myeloperoxidase (MPO) activities, calcitonin gene related peptide (CGRP) and substance P (SP) levels were assessed. The mRNA and protein expressions of TRPV1 in the lung and brainstem were measured by qRT-PCR and Western blot. Compared with in the Sham group, rats in the IR group had a poorer blood gas exchange (P<0.05) and the MPO activity and MDA level of lung tissues in the IR group were significantly higher than those in the Sham group (P<0.05). CGRP level in the IR group increased remarkably (P<0.05), while SP level did not differ statistically between the two groups (P>0.05). The mRNA and protein expressions of TRPV1 in the lung tissue were upregulated in the IR group (P<0.05), but there were no differences of those in the brainstem between the two groups (P>0.05). The results suggest that LIRI could upregulate the expressions of TRPV1 and evoke CGRP release in the lung.