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H S Moon

Publications and source records attributed to H S Moon.

48 records · Page 3Linked to original sources
PubMed1981

Extracorporeal membrane oxygenator support in a case of severe status asthmaticus.

Support with extracorporeal membrane oxygenation (ECMO) can sustain life for a substantial period of time, but the role of long-term ECMO support is limited. The National Institutes of Health ECMO collaborative study revealed no significant reduction in mortality in adults with severe respiratory distress syndrome treated with ECMO. The value of ECMO in the treatment of transient, severe acute respiratory insufficiency has been demonstrated in patients after cardiac operations, in patients with Pneumocystis carinii pneumonia, and in patients following trauma. We present an example of refractory respiratory failure in a young asthmatic with massive atelectasis in whom the institution of ECMO allowed us to perform adequate pulmonary lavage. It resulted in improvement in gas exchange and the patient's survival.

Adult↗
PubMed1975

Comparative hemodynamic consequences of inflation hold, PEEP, and interrupted PEEP: an experimental study in normal dogs.

Cardiac output and airway, intrathoracic, arterial, pulmonary artery, left atrial, and central venous pressures were studied in 8 mongrel dogs. They were anesthetized and ventilated with (1) inflation hold of various duration, (2) continuous positive end-expiratory pressure and one breath off). The results indicate a minimal decrease in cardiac output (of approximately 5 per cent) with inflation hold. Diminished cardiac output was noted with increasing levels of continuous PEEP. The severity of the decrease in cardiac output wasproportional to the airway pressure. The higher levels (20 cm H2O) OF PEEP were associated with profound decreases. Utilization of a technique of interrupted PEEP substantially reduced the adverse hemodynamic effects in the dog.

Animals↗
PubMedDate not supplied

Leaching characteristics of heavy metals from sewage sludge by Acidithiobacillus thiooxidans MET.

An acidophilic, sulfur-oxidizing Acidithiobacillus thiooxidans MET bacterium was isolated from anaerobically digested, dewatered sewage sludge. This bacterium showed sulfur-oxidizing ability at both acidic and neutral conditions, and allowed metal leaching even at a high (130 g L(-1)) sludge solids concentration. We found that low metal leaching efficiency at high solids concentration was mainly due to an increase in buffering capacity resulting in retardation of pH reduction. Therefore, metal leaching was mainly influenced not by sludge solids concentration, but by the pH (or sulfate concentration per unit sludge mass) of the sludge solutions. The relationship between the pH of the sludge solution and the efficiency of metal leaching was obtained by quantitatively investigating the effect of pH reduction or the amount of sulfate produced per unit sludge mass on leaching of each metal. Furthermore, the relationship between total metal content in the sludge and metal leached to the solution was obtained for each metal. Such a relationship allowed estimation of leachable metal at various amounts of total metal content in sludge.

Gammaproteobacteria↗