IVH who were diagnosed between 5 and 11 hours of age. Third, long-term outcome is critical to any intervention study in sick preterm infants. Indeed, it should have been part of the original study design and the outcome data presented at that time. Regarding the use of ketamine, the authors state in their article that “[a]lternative approaches to analgesia and sedation (eg, synchronized ventilation or intravenous ketamine therapy) may be more appropriate for these patients”1 (not referenced). In support of this statement, Anand and Hall now refer the reader to a “significant body of literature” related to ketamine use in neonates in 2 recent review articles.5,6 In reality, there are very limited data regarding ketamine use in the premature infant; most of the reports include a small number of infants who received a single dose during a procedure. To quote from the Anand et al review article, “although ketamine is frequently used for surgical anesthesia during surgical procedures in neonates, further studies are needed to examine its physiologic and behavioral effect when used to treat procedural pain in preterm and term infants.”5 The second review article by Berde et al6 raised important questions regarding potential neurodegeneration induced by N-methyl-D-aspartate (NMDA) receptor blockade. Thus, blockade of NMDA receptors for only a few hours during the late fetal and/or early neonatal period triggered widespread apoptotic neurodegeneration in the developing rat brain. One can argue the translational relevance of animal data; however, at a minimum, the experimental data should raise red flags. Thus, to summarize, the evidence demands careful prospective studies to evaluate the potential role of ketamine in controlling pain in the sick premature infant. Finally, as concluded in my commentary, I consider it essential that the potential for pain associated with medical care be an integral part of any neonatal management strategy. However, any intervention to minimize pain should include agents that achieve the desired goal while at the same time minimizing potential adverse effects.
[1]
C. Giaquinto,et al.
Incidence of Mucocutaneous Reactions in Children Treated With Niflumic Acid, Other Nonsteroidal Antiinflammatory Drugs, or Nonopioid Analgesics
,
2005,
Pediatrics.
[2]
T. Oberlander,et al.
Analgesia and local anesthesia during invasive procedures in the neonate.
,
2005,
Clinical therapeutics.
[3]
D. Tibboel,et al.
Anesthesia and analgesia during and after surgery in neonates.
,
2005,
Clinical therapeutics.
[4]
J. Perlman.
Morphine, Hypotension, and Intraventricular Hemorrhage in the Ventilated Premature Infant
,
2005,
Pediatrics.
[5]
B. Barton,et al.
Morphine, Hypotension, and Adverse Outcomes Among Preterm Neonates: Who’s to Blame? Secondary Results From the NEOPAIN Trial
,
2005,
Pediatrics.
[6]
B. Barton,et al.
Effects of morphine analgesia in ventilated preterm neonates: primary outcomes from the NEOPAIN randomised trial
,
2004,
The Lancet.
[7]
L. Sagliocca,et al.
Niflumic acid and cutaneous reactions in children
,
2001,
Archives of disease in childhood.
[8]
J. Vandenbroucke.
In Defense of Case Reports and Case Series
,
2001,
Annals of Internal Medicine.
[9]
R. Ehrenkranz,et al.
Risk factors for early intraventricular hemorrhage in low birth weight infants.
,
1992,
The Journal of pediatrics.
[10]
J. Olney,et al.
Blockade of NMDA receptors and apoptotic neurodegeneration in the developing brain.
,
1999,
Science.