Lessons learnt from two pediatric motor vehicle accidents resulting in anal canal, rectal and gluteal muscle wrenching

Ano-rectal trauma is common in motor vehicle accidents involving children. Inadequate initial assessment of the extent of lesions may be life threatening. We describe two cases where children were struck by buses that subsequently rolled over them in the prone position, resulting in ano-rectal and gluteal muscle wrenching. The first patient was inadequately assessed. Initial management did not include a diverting stoma, leading to life-threatening necrosis and septic shock. The second benefitted from our previous experience and recovery was uneventful. The distinctive mechanism of trauma in true gluteal muscle and anal canal wrenching is discussed. Gluteal muscle, anal canal and rectal wrenching as a result of rolling force from a motor vehicle is a very serious condition requiring immediate intestinal diversion with a stoma. Immediate repair may be attempted at the same time as stoma creation if the patient is stable. Broad-spectrum antibiotics and close wound monitoring are necessary to avoid muscle necrosis and serious complications.

Gastroschisis and omphalocele: retrospective study of initial postoperative management in the ICU

AIM OF THE STUDY

The purpose of this study is to describe the management of infants with gastroschisis (G) and omphalocele (O) during the first 7 days after surgery.

METHODS

A retrospective review of all cases of O or G managed at the ICU of the Robert Debré Teaching Hospital between January 1993 and July 2000 was carried out.

PATIENTS

29 infants with G, 15 with O (12 unruptured O [UO] and 3 ruptured O [RO]).

RESULTS

Ventilatory support consisted of conventional mechanical ventilation (46 %) and/or in high-frequency oscillatory ventilation (61 %). After day 4, ventilatory requirements evaluated by mean airway pressure (MAP) differed significantly between G (n = 10/29) and O (n = 7/15; group vs. day of life, p = 0.04). The average of MAP measured on days 5, 6, and 7 was significantly higher in O than in G (14.7 +/- 3.0 versus 10.9 +/- 2.8, p < 0.01, respectively). Volume expansion was required at least once in 90 % of patients. Mean fluid requirements were significantly lower in UO than in G and in RO (41 +/- 31 ml/kg, 91 +/- 73 ml/kg, and 137 +/- 25 ml/kg, respectively; p = 0.02 for each comparison). Patients with G were significantly more likely to receive norepinephrine (59 % vs. 20 %, p = 0.027) than patients with O. Twenty-six infants with G (90 %) and 11 with O (73 %) were discharged alive from ICU.

CONCLUSIONS

Haemodynamic instability can be expected in patients with G or RO, and ventilatory requirements were higher in infants with O than in infants with G during the first week after surgery.

[Treatment in 2003 of septic shock in children in the first two hours (excluding newborns)]

Despite new understandings in pathophysiology, sepsis mortality remains high in children. Recently, it has been demonstrated that early goal directed therapy may decrease septic shock mortality. The aim of this paper is to propose practical clinical guidelines based on earlier consensus recommendations. Septic shock must be rapidly suspected and early recognized. Bases of treatment are maintenance of adequate oxygenation with use of artificial ventilation if necessary, larger and faster volume resuscitation than recommended before, empiric antibiotherapy and early use of vasopressive agents associated with corticosteroids in particular situations. Treatment efficacy must be regularly assessed during first hours of resuscitation. Taking into account pediatric particularities and results of adult studies, pediatricians who take care of children at beginning of septic shock may reasonably hope to decrease mortality if they keep in mind specific therapeutic goals.

[Severe acute White-Spirit poisoning with pulmonary hypertension]

The Authors report a case of acute White-Spirit poisoning with pulmonary hypertension associated to respiratory distress syndrome.

CASE REPORT

A 14-month-old infant drank an unknown quantity of White-Spirit while his parents were painting. After he spontaneously vomited, he presented a seizure at the emergency department. After a 36 h stay in Pediatric Intensive Care Unit (PICU), acute lung injury required mechanical ventilation and vasoactive support. Cardiac ultrasounds showed pulmonary hypertension, which rapidly resolved with inhaled nitric oxide. The child was discharged of PICU after five days. Respiratory follow-up two months after poisoning was normal.

CONCLUSION

Pulmonary hypertension should be checked for in case of White-Spirit ingestion complicated with severe acute lung injury.

Arousal response to hypoxia in newborn mice

We examined the arousal response to 5% O(2) in newborn mice at several ages before and after peripheral chemoreceptor resetting, namely, at 3, 12, and 48 h (n=22 in each group). Breathing was measured by whole-body flow barometric plethysmography. Sleep and arousal were determined behaviourally. We found that: (1) the arousal response was present in all age groups; (2) the arousal response occurred during the hypoxic ventilatory decline in all age groups, showing that mechanoreceptor input was not sufficient to trigger arousal; and (3) arousal latency was shorter after than before chemoreceptor resetting, suggesting a contribution of chemoreceptors to arousal. We conclude that arousal may contribute to the hypoxic ventilatory response in the early postnatal period in mice and that it should be taken into consideration in studies of ventilatory control maturation in newborns.