Long-term performance of single-pass physiological pacing.
Indian Heart J
;
2001 Jul-Aug; 53(4): 477-80
Artigo
em Inglês
| IMSEAR
| ID: sea-5116
ABSTRACT
BACKGROUND:
Single-pass physiological pacing has several advantages over dual-lead physiological pacing. The present study evaluated the long-term performance of single-pass pacing using the overlapping biphasic impulse stimulation technique. METHODS ANDRESULTS:
A total of 30 patients with single-pass VDD pacing and 8 patients with single-pass DDDC pacing were followed up for 1 year by basal and magnet electrocardiograms and real-time telemetry. All the patients showed satisfactory atrial sensing and pacing capture threshold. The atrial sensing thresholds at implant and at 1 month, 3 months, 6 months and 12 months of follow-up were 2.5+/-0.67 mV, 1.6+/-0.6 mV, 1.1+/-0.5 mV, 1.0+/-0.5 mV and 1.0+/-0.04 mV, respectively. The corresponding values for atrial pacing threshold at a pulse wave of 0.5 ms were 2.5+/-1.0 V, 4.4+/-0.9 V, 3.8+/-1.2 V, 3.6+/-1.4 V and 3.8+/-1.4 V. Of the patients with DDDC pacing, 88% showed stable pacing capture in the supine position, 75% in the upright position and 62% in both positions. Diaphragmatic contraction was seen in 25% of cases with DDDC pacing. No such event was seen in patients with VDD pacing.CONCLUSIONS:
Single-pass pacing is safe, technically easy and cheap as compared to dual-lead systems. However, it would be prudent to recommend DDDC pacing in patients who require predominantly VDD pacing and only occasionally atrial pacing, as the latter showed a low percentage of stable atrial pacing capture in both upright and supine positions as well as a significant percentage of diaphragmatic contraction.
Texto completo:
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Índice:
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Assunto principal:
Limiar Sensorial
/
Fatores de Tempo
/
Idoso
/
Feminino
/
Humanos
/
Masculino
/
Estimulação Cardíaca Artificial
/
Estudos Prospectivos
/
Seguimentos
/
Adulto
Tipo de estudo:
Estudo observacional
/
Estudo prognóstico
Idioma:
Inglês
Revista:
Indian heart j
Ano de publicação:
2001
Tipo de documento:
Artigo
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