ISSN:0090-3493    

出版商:OVID    

年代:1975

数据来源: OVID

摘要:

Echocardiographic analysis with a strip recorder gives an accurate assessment of cardiac function, easily obtainable at the bedside of the critically ill. Ejection fraction and velocity of circumferential fiber shortening (Vcf) are the two most accurate measurements of cardiac function. The diameter of the minor axis of the left ventricle is measured in systole (Ds) and diastole (DD). Systolic volume is (Ds)3, disastolic volume is (DD)3, ejection fraction is (DD)3-(DS)3divided by (DD)3, Vcf is DD-DS divided by DD×LVET.

ISSN:0090-3493    

出版商:OVID    

年代:1975

数据来源: OVID

摘要:

This report describes an unusual hemolytic transfusion reaction. A group O donor was inadvertently transfused with 100 ml of group A red cells during the course of plasmapheresis. Granulocytopenia, thrombocytopenia, hypofibrinogenemia and low levels of factors V, VIII, and IX developed immediately after the infusion. The levels of the cellular elements and coagulation proteins returned to normal in less than an hour; too rapid for ade novosynthesis after consumption of coagulation proteins. We postulate that activation of the kinin system was responsible for the phenomena rather than intravascular coagulation with secondary fibrinolysis.

ISSN:0090-3493    

出版商:OVID    

年代:1975

数据来源: OVID

ISSN:0090-3493    

出版商:OVID    

年代:1975

数据来源: OVID

摘要:

Weaning of neonates from assisted ventilation or continuous positive pressure breathing is a complex process. Unfortunately, at present we lack sensitive indices to measure the infant's ability to sustain spontaneous breathing. In the absence of such criteria we should rely heavily on clinical findings correlated with available biochemical data. Good clinical acumen and experience is necessary for successful weaning.

ISSN:0090-3493    

出版商:OVID    

年代:1975

数据来源: OVID

ISSN:0090-3493    

出版商:OVID    

年代:1975

数据来源: OVID

ISSN:0090-3493    

出版商:OVID    

年代:1975

数据来源: OVID

摘要:

Lung converting enzyme (LCE) was extracted from normal human lung obtained at autopsy. The specificity of the enzyme preparation was confirmed in vitro by incubation with Angiotensin I (AI) and paper chromatographic identification of reaction products. A method was developed for assay of the enzyme preparation in human serum using tritiated Angiotensin I (H3AI) as substrate. Enzyme activity is quantitated by scintillation counting the radioactive end product tritiated dipeptide histadyl- Ieucine (H3His-leu). Serum from the authors and pooled serum from the hospital laboratory caused less than 3.5% conversion of H3AIto H3His-leu. Serum from two patients with severe lung damage caused a maximum 20% conversion of H3AIto H3His-leu. Percent conversion in these patients correlated with clinical and laboratory evidence of lung dysfunction.

ISSN:0090-3493    

出版商:OVID    

年代:1975

数据来源: OVID

ISSN:0090-3493    

出版商:OVID    

年代:1975

数据来源: OVID

ISSN:0090-3493    

出版商:OVID    

年代:1975

数据来源: OVID