Assuntos
Bactérias Aeróbias/efeitos dos fármacos , Metais/toxicidade , Eliminação de Resíduos , Microbiologia do Solo , Poluentes do Solo/toxicidade , Ágar , Cobre/toxicidade , Meios de Cultura , Cianobactérias/efeitos dos fármacos , Chumbo/toxicidade , Níquel/toxicidade , Rhizobium/efeitos dos fármacos , Zinco/toxicidadeRESUMO
Two infants with fatal persistent pulmonary hypertension are described. Morphologically there was misalignment of the lung vessels, with the veins and the arterioles anomalously related, often sharing the same adventitial sheet. The capillaries did not make contact with the alveolar epithelium. The arterioles had increased medial muscle, and there was extension of the arteriolar muscularization to the precapillary level. The fraction of the parenchyma that was septal and connective tissue was increased. The acini had a decreased complexity, with immature alveoli and with a decreased radial alveolar count. The cause appeared to be related to abnormal capillary and venous plexus formation and migration. This syndrome seems to be identical with that described in three previous reports and probably represents a specific cause of persistent pulmonary hypertension.
Assuntos
Pulmão/irrigação sanguínea , Síndrome da Persistência do Padrão de Circulação Fetal/etiologia , Veias Pulmonares/anormalidades , Arteríolas/anormalidades , Monitorização Transcutânea dos Gases Sanguíneos , Capilares/anormalidades , Capilares/patologia , Humanos , Recém-Nascido , Pulmão/patologia , Masculino , Alvéolos Pulmonares/irrigação sanguíneaRESUMO
This report describes a case of postischemic myocardial dysfunction that was successfully treated with ECMO.
Assuntos
Doença das Coronárias/terapia , Oxigenação por Membrana Extracorpórea , Feminino , Humanos , Recém-NascidoRESUMO
The incidence of hyperkalemia and associated clinical features in extremely preterm infants were determined by reviewing medical records of 32 infants with birth weights of less than or equal to 800 g born during a 1-year period. Hyperkalemia, defined as serum potassium concentration of greater than 6.5 mEq/L, occurred in 12 infants on the first day of life and in four others on the second day. Six infants (38%) had electrocardiographic abnormalities associated with hyperkalemia. Infants with hyperkalemia were less mature than infants with normal potassium levels. All infants of less than 25 weeks' gestation developed hyperkalemia. Fluid intakes and urine flow rates were lower and body weight loss greater during the first 24 hours of hospitalization for hyperkalemic infants. Hyperkalemia frequently occurs within the first 48 hours of life in extremely immature infants. Serum potassium should be monitored closely to avoid life-threatening cardiac arrhythmias in these infants.
