PMID- 7515984 OWN - NLM STAT- MEDLINE DCOM- 19940711 LR - 20071115 IS - 0160-2446 (Print) IS - 0160-2446 (Linking) VI - 23 IP - 3 DP - 1994 Mar TI - Hemodynamic effects of the new antiarrhythmic agent restacorin in patients with normal and decreased left ventricular function. PG - 408-14 AB - The hemodynamic and pharmacokinetic effects of the novel class 1c antiarrhythmic drug restacorin were investigated in two groups of patients. Group I consisted of 5 patients with normal left ventricular (LV) function, and group II consisted of 10 patients with mild heart failure [New York Heart Association (NYHA) II; mean LV ejection fraction 33 +/- 6%]. The study had an open label, baseline-controlled, single-dose design. Restacorin was infused in a total dosage of 1.2 mg/kg. In group I, the only significant change as compared with baseline findings was a 25% increase in right atrial pressure. In group II; cardiac output (CO), dP/dt, and stroke work index (SWI) decreased significantly (-18, -11, and -24%, respectively). In addition, a significant 32% increase was noted in pulmonary artery wedge pressure (PAWP), and a 27% increase occurred in systemic vascular resistance (SVR). No changes were observed in heart rate (HR) or mean arterial blood pressure (MAP). CO and SVR at baseline correlated with the average plasma concentrations (r = -0.65 and p = 0.009 and r = 0.56 and p = 0.028 respectively). Creatinine clearance was inversely correlated to the restacorin plasma concentration (r = -0.51, p = 0.05). The half-life (t1/2) elimination time of restacorin was 2.60 h for group I, and 4.06 h for group II. Clearance was 51.4 and 32.2 L.h-1, respectively. Restacorin appears to be well tolerated in patients with normal LV function. The drug is not recommended for use in patients with reduced LV function because of its moderate negative inotropic effect. FAU - Tuininga, Y S AU - Tuininga YS AD - Department of Cardiology, University Hospital, Groningen, The Netherlands. FAU - Crijns, H J AU - Crijns HJ FAU - Oosterhuis, B AU - Oosterhuis B FAU - Wiesfeld, A C AU - Wiesfeld AC FAU - van Wijk, L M AU - van Wijk LM FAU - Albronda, F AU - Albronda F FAU - de Bruin, H AU - de Bruin H FAU - Jonkman, J H AU - Jonkman JH FAU - Kozma, C AU - Kozma C FAU - Lie, K I AU - Lie KI LA - eng PT - Clinical Trial PT - Journal Article PL - United States TA - J Cardiovasc Pharmacol JT - Journal of cardiovascular pharmacology JID - 7902492 RN - 0 (Anti-Arrhythmia Agents) RN - 0 (Guanidines) RN - 100751-82-4 (restacorin) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Anti-Arrhythmia Agents/adverse effects/pharmacokinetics/*pharmacology MH - Blood Pressure/drug effects MH - Cardiac Output/drug effects MH - Female MH - Guanidines/adverse effects/pharmacokinetics/*pharmacology MH - Half-Life MH - Heart Failure/physiopathology MH - Heart Rate/drug effects MH - Hemodynamics/*drug effects MH - Humans MH - Male MH - Middle Aged MH - Pulmonary Wedge Pressure/drug effects MH - Vascular Resistance/drug effects MH - Ventricular Function, Left/*drug effects EDAT- 1994/03/01 00:00 MHDA- 1994/03/01 00:01 CRDT- 1994/03/01 00:00 PHST- 1994/03/01 00:00 [pubmed] PHST- 1994/03/01 00:01 [medline] PHST- 1994/03/01 00:00 [entrez] PST - ppublish SO - J Cardiovasc Pharmacol. 1994 Mar;23(3):408-14.