[Case of tracheal agenesis found during surgery].

We reported a case of tracheal agenesis (TA) that was diagnosed during surgery. A female infant, weighing 1,104 g, was born at the 29 weeks of gestation. She showed severe respiratory distress without crying. Oxygenation was improved by mask ventilation, but tracheal intubation was very difficult. Tracheoesophageal fistula (TEF) was suspected because significant amount of air from nasogastric tube was noticed. Physical examination and X-ray findings suggested Gross E type TEF, duodenal atresia and cloaca. On the second day of life, ligation of TEE gastrostomy and colostomy were scheduled. Although operation was started without problems, ventilation became impossible when TEF was clamped and release of clamping made it possible. Bronchoscopic investigation revealed that tracheal tube was located in the esophagus. We have never doubted the esophageal intubation, because patient was ventilated preoperatively and signs of respiratory distress syndrome were successfully treated by the surfactant replacement therapy through tracheal tube. Type II TA according to Floyd's classification was diagnosed by bronchoscopic and echographic investigations. Distal esophageal ligation, gastrostomy and esophagostomy were performed. She died on the 12th day of life in spite of vigorous ventilatory and cardiovascular support.

[A Kumamoto model of clinical training in tracheal intubation for paramedics].

BACKGROUND: Since July 2004, the Japanese Ministry of Health, Labor and Welfare approved certified paramedics to perform emergency prehospital tracheal intubation. A specialized training system in tracheal intubation has been established in Kumamoto Prefecture. METHODS: The Kumamoto Prefectural Medical Control Organization, a tracheal intubation task force was established: consisting of the departments of Anesthesiology at Kumamoto University and 11 other major hospitals, along with Kumamoto Prefecture and the 14 prefectural fire-departments. This group published the Kumamoto training guidelines and a training system for paramedics. RESULTS: Kumamoto Prefecture appealed for support of paramedic activity on television and in newspapers as public education. The prefectural governor officially asked hospitals to train paramedics. Because 9 of the 14 fire-departments had no regional teaching hospital, trainees were matched with other hospitals by the task force. The task force published a pamphlet to inform surgical patients about tracheal intubation training and to recruit patients as practice volunteers. Anesthesiologists undertook significant roles in making arrangements to facilitate the project at their hospitals, in addition to teaching paramedics prior to surgical procedures. CONCLUSIONS: The Medical Control Organization, Kumamoto Prefecture, anesthesiologists and emergency response personnel worked together successfully to promote the training program for clinical tracheal intubation by paramedics.

[Anesthesia for cesarean section in a patient with transient diabetes insipidus].

A 32-year-old pregnant female was admitted to our hospital at 32 week gestation and was scheduled for emergent cesarean section because of fetal distress. She had been suffering hydrodipsia and dry mouth, and had lost 4 kg in 2 weeks. Hypernatremia, hyperchloremia, and lower urinary specific gravity were preoperatively noted. Her electrolyte imbalance was partially corrected by the infusion of 1400 ml of 5% glucose solution and 500 ml of acetated Ringer's solution, but unexpected hyperglycemia; 440 mg.dl-1, appeared before surgery. Cesarean section was successfully performed with spinal anesthesia. A 1566 g male infant was delivered with 1 and 5 min Apgar scores of 2 and 1. Hyperglycemia and secondary hypoglycemia occurred in the infant in the neonatal ICU. The mother's fluid loss, including blood and amniotic fluid, was estimated at 784 ml. Five hundred milliliters of acetated Ringer's solution and 1000 ml of half saline solution with 2.5% glucose were infused before delivery, followed by the glucose solution containing a low concentration of sodium after delivery. After surgery, high serum osmotic pressure and paradoxically low urinary osmotic pressure were found. The plasma antidiuretic hormone level was normal against the high serum osmotic pressure. The electrolyte imbalance and urinary osmotic pressure were improved by using I-deamino-8-d-arginine vasopressin, and DI was finally diagnosed. Hormonal therapy was discontinued on day 20, and the patient was discharged on day 21. Some pregnancies are complicated by transient DI. Anesthesiologists have to consider DI when a pregnant female has symptoms of dehydration and a significant electrolyte imbalance.