RESUMO
In 1988, the number of Shigella dysenteriae type 1 (Sd1) infections reported in the USA increased five-fold over the annual mean from the previous decade. 44 (94%) of 47 interviewed patients reported recent travel to Mexico; 33 (75%) of these had been tourists to the Yucatan peninsula. 27 patients who had travelled to Mexico were admitted to hospital, of whom 2 had a haemolytic uraemic syndrome; none died. The antimicrobial resistance pattern and plasmid profile of the Yucatan strain were similar to those of the 1969-72 pandemic strain. Antimicrobial resistances and plasmid profiles were different in sporadic Western hemisphere strains. This is the first outbreak of Sd1 among US tourists and it is the largest known outbreak in the Western hemisphere since the early 1970s. The dominant Sd1 strain is similar to that which caused the catastrophic 1969-72 pandemic. Surveillance and control measures have been instituted in the Yucatan peninsula.
Assuntos
Surtos de Doenças , Disenteria Bacilar/epidemiologia , Viagem , Doença Aguda , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Antibacterianos/uso terapêutico , Criança , Pré-Escolar , Disenteria Bacilar/complicações , Disenteria Bacilar/etiologia , Disenteria Bacilar/prevenção & controle , Disenteria Bacilar/terapia , Feminino , Humanos , Masculino , México , Pessoa de Meia-Idade , Plasmídeos/efeitos dos fármacos , Estudos Retrospectivos , Shigella dysenteriae/classificação , Shigella dysenteriae/efeitos dos fármacos , Shigella dysenteriae/isolamento & purificação , Estados Unidos/etnologiaRESUMO
Twenty patients (age 2 weeks to 15 years) who fulfilled strict selection criteria for adult respiratory distress syndrome were identified during a 3 1/2-year period. The underlying disease was intra-abdominal infection/septicemia in seven, hypovolemic shock, near drowning, closed space burn, or cardiogenic shock caused by nupercaine intoxication in two each, and miscellaneous in five. The mean time of artificial ventilation with PEEP was 18 days (range 5 to 92), and the mean time of FIO2 greater than or equal to 0.5 while on the ventilatory 139 hours (range 12 to 648). PEEP levels were most often between 8 and 15 cm H2O. Eight patients had a pulmonary air leak. Eight patients died (40% mortality). Death was nearly always related to unresolved basic medical or surgical problems and multiple organ failure. Treatment of ARDS includes elimination of the cause of ARDS, early institution of mechanical ventilation with PEEP, prompt recognition and treatment of superimposed infections, and careful management of additional organ failures.