下列哪一项不足M状神经节阻滞的潜在并 发症（  ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27186' and id < 2253210 and id<>'2253210' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27186' and id > 2253210 and id<>'2253210' order by id asc limit 5