Pediatric anesthesia & critical care

A comparison of ultrafast and conventional spectral Doppler ultrasound to measure cerebral blood flow velocity during inguinal hernia repair in infants

J Clin AnesthPublished Prospective observational cohort study

Authors' conclusion

It is possible to quantify cortical blood flow velocity during general anesthesia using conventional and ultrafast spectral Doppler cerebral ultrasound.

Study context

Population
Infants up to six months of age undergoing inguinal hernia repair under anesthesia
Participants
20 participants
Exposure
Ultrafast vs conventional spectral Doppler cerebral ultrasound
Outcome
Number of successful measurements (induction, after sevoflurane induction, caudal analgesia, fluid bolus, emergence)
Methodological detailssingle-centre
  • Single-centre

Main finding

As reported in the abstract

Usable Doppler images (successful measurements)

Conventional

72/100

72 events

Ultrafast

51/100

51 events

Observational data: associations, not effects.

Further findings

Intraoperative success rate · Intraoperatively

  • Intraoperative success rate: 53/60 and 41/60

Cerebral blood flow velocity (end diastolic velocity) after emergence

Conventional: increased from 2.01 to 2.75 cm/s
P < 0.001
Ultrafast: increased from 0.59 to 0.94 cm/s

Cerebral oxygenation after emergence

Decreased from 85% to 68%
P < 0.001

Original publication

A comparison of ultrafast and conventional spectral Doppler ultrasound to measure cerebral blood flow velocity during inguinal hernia repair in infants. J Clin Anesth. Published 4 November 2023. doi:10.1016/j.jclinane.2023.111312

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