Why the study?
Do volatile anesthetics (halothane and sevoflurane) differentially affect actin-myosin cross-bridge cycling in neonatal versus adult rat cardiac muscle?
Population
Triton X-100-skinned cardiac muscle strips from 0- to 3-day-old (neonate) and 84-day-old (adult) rats
Comparison
1 and 2 minimum alveolar concentration halothane… vs Absence of anesthetic
Design
Preclinical
Authors
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May underlie greater neonatal sensitivity to volatiles in rats; extends mechanistic insights but leaves open clinical translation.
Do volatile anesthetics (halothane and sevoflurane) differentially affect actin-myosin cross-bridge cycling in neonatal versus adult rat cardiac muscle?
The greater myocardial sensitivity of neonates to volatile anesthetics is partly due to direct inhibition of cross-bridge cycling kinetics.
Prakash et al. (2000) studied this question.
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