• Yoshiki Arakawa, Ken-ichiro Kikuta, Masato Hojo, Yasunobu Goto, Sen Yamagata, Kazuhiko Nozaki, and Nobuo Hashimoto.
• Department of Neurosurgery, Kurashiki Central Hospital, Kurashiki, Okayama. yarakawa@sb3.so-net.ne.jp
• Neurol. Med. Chir. (Tokyo). 2004 Aug 1;44(8):393-400; discussion 401.

AbstractThe preventative effect of cisternal irrigation with milrinone against vasospasm was evaluated in 12 patients with subarachnoid hemorrhage (SAH) of World Federation of Neurosurgical Societies grade IV or V treated between September 1999 and September 2000. All aneurysms were clipped or embolized within 72 hours of the onset of SAH. Inlet and outlet tubes were placed in either the supratentorial cisternal space, lateral ventricle, or spinal subarachnoid space. Lactated Ringer solution containing urokinase (120 IU/ml), ascorbic acid (3.5 mg/ml), and milrinone (3.6 microg/ml) was continuously infused at 30 ml/hr for as long as 2 weeks. Angiographical vasospasm was detected in only two of the 11 patients who received milrinone irrigation and underwent postoperative angiography. Vasospasm may have resulted from irrigation obstruction associated with pneumocephalus in one patient and clot in the sylvian fissure in the other patient. The outcome of the milrinone irrigation therapy was significantly better than that of the conventional therapy. This study suggests that cisternal irrigation with milrinone is safe and effective, and reduces the occurrence of vasospasm in patients with poor grade aneurysmal SAH.

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