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      Alta dose de amiodarona em curto período reduz incidência de fibrilação atrial e flutter atrial no pós-operatório de cirurgia de revascularização miocárdica Translated title: High dose of amiodarone in a short-term period reduces the incidence of postoperative atrial fibrillation and atrial flutter

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          Abstract

          OBJETIVOS: Avaliar se a administração de amiodarona, em doses altas e curso rápido, reduz a incidência de fibrilação ou flutter atrial, após cirurgia de revascularização miocárdica e se reduz, também, o tempo de internação hospitalar. MÉTODOS: A amostra se constituiu de 93 pacientes randomizados, em estudo duplo-cego, para receberem amiodarona (46 pacientes) ou placebo (47 pacientes). A terapia consistia na aplicação de 600mg de amiodarona, três vezes ao dia, iniciada no mínimo 30 horas e no máximo 56 horas antes da cirurgia. RESULTADOS: Fibrilação ou flutter atrial no pós-operatório ocorreu em 8 dos 46 pacientes no grupo amiodarona (17,4%) e em 19 dos 47 pacientes no grupo placebo (40,4%) (p=0,027). A dose média de amiodarona foi de 2,8g. Os pacientes do grupo amiodarona ficaram hospitalizados por 8,9±3,1 dias, enquanto a internação dos pacientes do grupo placebo foi de 11,4± 8,7 dias (p=0,07). O tempo de internação foi significativamente prolongado nos pacientes que desenvolveram fibrilação ou flutter atrial após a cirurgia, independente do grupo randomizado. CONCLUSÃO: Esta nova alternativa de administração de amiodarona em alta dose e por um curto período, antes da cirurgia de revascularização miocárdica, reduz a incidência de fibrilação ou flutter atrial no pós-operatório desta cirurgia.

          Translated abstract

          OBJECTIVE: To investigate wheter oral amiodarone administered before surgery for a short period in high dose would reduce the incidence of postoperative atrial fibrillation or atrial flutter and reduces the lenght of hospital stay. METHODS: In the double-blind, randomized study, 93 patients were given either oral amiodarone (46 patients) or placebo (47 patients). Therapy consisted of 600mg of amiodarone three times a day, started at mininum 30 hours and at maximum 56 hours before surgery. RESULTS: Postoperative atrial fibrillation or atrial flutter occurred in 8 of 46 patients in the amiodarone group (17.4%) and 19 of the 47 patients in the placebo group (40.4%) (p=0.027). The mean dose of amiodarone was 2.8g. Patients in the amiodarone group were hospitalized for 8.9±3.1 days and patients in the placebo group were hospitalized for 11.4± 8.7 days (p=0.07). The hospital lenght were significantly prolonged in patients who developed atrial arrhythmias after surgery, despite the treatment received.(p<0.001). CONCLUSION: This new alternative way of using amiodarone in high dose and in a short-term period before surgery reduce the incidence of postoperative atrial fibrillation or atrial flutter in coronary artery bypass graft surgery.

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          Single-day loading dose of oral amiodarone for the prevention of new-onset atrial fibrillation after coronary artery bypass surgery

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            Atrial fibrillation following coronary artery bypass graft surgery: predictors, outcomes, and resource utilization. MultiCenter Study of Perioperative Ischemia Research Group

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              A comparison of two individual amiodarone regimens to placebo in open heart surgery patients

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                abc
                Arquivos Brasileiros de Cardiologia
                Arq. Bras. Cardiol.
                Sociedade Brasileira de Cardiologia - SBC (São Paulo )
                1678-4170
                September 2006
                : 87
                : 3
                : 236-240
                Affiliations
                [1 ] Pontifícia Universidade Católica do Rio Grande do Sul Brazil
                [2 ] Fundação Universitária de Cardiologia
                Article
                S0066-782X2006001600002
                10.1590/S0066-782X2006001600002
                85c5072f-3f7b-471a-a905-0ecee6659d76

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0066-782X&lng=en
                Categories
                CARDIAC & CARDIOVASCULAR SYSTEMS

                Cardiovascular Medicine
                Amiodarone,Atrial fibrillation,Atrial flutter,Coronary Artery Bypass Graft Surgery,Amiodarona,fibrilação atrial,flutter atrial,cirurgia de revascularização miocárdica

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