[Respiratory distress in the newborn (author's transl)].

Diseases which manifest with the respiratory distress in the newborn include 1) respiratory diseases-IRDS, type II RDS, neonatal asphyxia, and MAS etc. 2) anemia, CHD 3) CNS and 4) metabolic diseases. Among these, IRDS has high mortality rate because of the lack of the pulmonary surfactant and immaturity of respiratory center, and has many difficult problems in terms of its prevention and respiratory management. The points of its respiratory management are as follows: 1) Estimation of the level of arterial oxygen ation-this is the most important point. It has become possible, these days, to monitor continuous oxygenation using a transcutaneous oxygen electrode. 2) Knowledge of the physiology & management of apnea, and monitoring of heart rate and respiration. 3) Correction of acidosis & anemia and the nutritional supply by the intraveonous fluid administration. 4) Airway maintenance. 5) Oxygen administration to main PaO2 or tc PO2 of 60--80 mmHg. 6) Artificial ventilation by CPAP or IMV and 7) The specific drug therapy includes indomethacin for PDA associated with IRDS, Tolazoline for the fetal circulation syndrome, and Xanthine derivatives for primary apnea. 8) However, improvement by exchange transfusion has been contro-versial. On the other hand, in the type II RDS which has a relatively good prognosis, the intact survival can be expected by means of the proper management of general condition and respiration. In MAS, pneumothorax, pneumomediastinum and severe asphyxia, the proper resuscitation, oxygen administration should be given according to several conditions, especially the degree of hypoxia. The peritoneal dialysis can be lifesaving in case of severe renal impairment with RD. As the respiratory distress in the newborn is very frequent in its occurrence and death rate, its proper management is expected to result in the decrease in the newborn death rate in Hokkaido (8.1--6.6 per 1,000 live births) and the increase in the survival rate without any handicap, particularly if hospitals in each Hokkaido district give the newborn medical care more intensively than at present.