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Milrinone and the treatment of clinical vasospasm : The MNH Protocol. April 2013 Mark Angle, M.D. Kuwait City. Vasospasm. Syndromic Hemolysate Induced Systemic and Local Inflammatory Response. Vasospasm. Universal Distal Vasodysregulation Episodic Proximal Arteritis.
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Milrinone and the treatment of clinicalvasospasm :The MNH Protocol April 2013 Mark Angle, M.D. Kuwait City Milrinone and the treatment of clinical vasospasm
Vasospasm • Syndromic • HemolysateInduced • Systemic and Local Inflammatory Response Milrinone and the treatment of clinical vasospasm
Vasospasm • Universal Distal Vasodysregulation • Episodic Proximal Arteritis Milrinone and the treatment of clinical vasospasm
CerebralVasospasm • Symptomatic in 30-40% of sub-arachnoidhemorrhage • 20-50% stroke (delayedneurologicaldeficits) despitecurrenttherapy : • HHH • Angioplasty • MagicBullets Milrinone and the treatment of clinical vasospasm
Milrinone • Phosphodiesterase III inhibitor • Inotrope, peripheralvasodilator • Dosage (cardiac) : • 50 µc/kg bolus • 0.75 µc/kg/min infusion Milrinone and the treatment of clinical vasospasm
MNH Protocol • Normovolemia (CVP ~ 6 mmHg) • Normonatremia ([Na] > 140 meq/L) • Normoglycemia • Normothermia • Permissive Hypertension • Milrinone : • 150 µc/kg bolus • 0.75 µc/kg/min infusion Milrinone and the treatment of clinical vasospasm
MNH Protocol • Levophed to maintainmeanblood pressure atpre-milrinonelevel • Rebolus and increase by 0.25 µc/kg/min for persistent or recurrentsymptoms • Weaningprotocol : • 0.75 µc/kg/min X 72 hours • 0.50 µc/kg/min X 48 hours • 0.25 µc/kg/min X 48 hours Milrinone and the treatment of clinical vasospasm
MNH Protocol • For refractorysymptoms • Induced Hypertension • Angiography/Angioplasty/Intra-arterial Infusion Milrinone and the treatment of clinical vasospasm
MNH Protocol Milrinone and the treatment of clinical vasospasm
MNH Protocol Milrinone and the treatment of clinical vasospasm
MNH Protocol Milrinone and the treatment of clinical vasospasm
MNH Protocol Daily mean alpha power in patient trendedagainst the modulation of the dose of milrinone. Milrinone and the treatment of clinical vasospasm
MNH Protocol Daily mean alpha power in patient trendedagainst the modulation of the dose of milrinone. Milrinone and the treatment of clinical vasospasm
Milrinone • Possible ContributoryEffects: • IncreasedCardiac Output • Altered Blood Rheology • Anti-inflammatoryEffects • Direct CerebralVascular Dilatation Milrinone and the treatment of clinical vasospasm
Conclusions • Cerebralvasospasmremains an important determinant of outcomeafter SAH • Standard therapyisresource intensive, physiologicallychallenging and onlypartially effective • Milrinonetherapyis simple, well-tolerated and highly effective in a “real-world” trial Milrinone and the treatment of clinical vasospasm