Hernández-Bernal CE, Martínez-Sánchez A, Oriol-López SA, Castelazo-Arredondo JA

Language: Spanish
References: 12
Page: 107-113
PDF size: 68.73 Kb.

ABSTRACT

Tremor consists of a series of unwilling muscular contractions in order to increase heat metabolic production. Central hypothermia is present at peridural anesthesia. Tremor starts so as to compensate heat loss. This is a very serious potential complication because it increases oxygen consumption levels from 200% up to 600%. This last fact may cause hypoxia due to the increase in demand, ant it puts several body’s tissues at risk. In order to diminish it, it has been proposed (among others) the administration of fentanyl, as a thermo regulator stimulating the generation of cyclic AMP (Adenosine Mono Phosphate) that increases neuron thermo sensibility. Objectives: To evaluate tremor incidence in peridural blocking with and without fentanyl in patients subjected to caesarian. Material and methods: One hundred and thirty patients, randomly distributed into two groups with local anesthesia, were studied. Group A: 2% lidocaine with peridural ephedrine plus fentanyl. Group B: 2% lidocaine plus epinephrine. Tremor, mean arterial blood pressure, cardiac frequency, pulse oximetry, temperature were evaluated on the newborn baby for a fifty-minute period. Results: Group A presented a lower tremor and body hypothermia, with a significant statistical difference (p ‹ 0.05). APGAR was obtained without statistical difference. Conclusions: Peridural addition of fentanyl to the local anesthetic diminishes tremor in a significant way.

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