Research Topics

Ralph Wang

Affiliation: University of California

Country: USA

Use of a β-hCG discriminatory zone with bedside pelvic ultrasonography
Ralph Wang
Department of Emergency Medicine, University of California, San Francisco, San Francisco, CA, USA
Ann Emerg Med 58:12-20. 2011
Differential use of diagnostic ultrasound in u.s. Emergency departments by time of day
JOHN C STEIN
University of California, San Francisco
West J Emerg Med 12:90-5. 2011
Emergency physician ultrasonography for evaluating patients at risk for ectopic pregnancy: a meta-analysis
JOHN C STEIN
Department of Emergency Medicine, University of California, San Francisco, CA 94143, USA
Ann Emerg Med 56:674-83. 2010

Use of a β-hCG discriminatory zone with bedside pelvic ultrasonography
Ralph Wang
Department of Emergency Medicine, University of California, San Francisco, San Francisco, CA, USA
Ann Emerg Med 58:12-20. 2011
..We seek to assess the performance of the β human chorionic gonadotropin (β-hCG) "discriminatory zone" when using bedside pelvic ultrasonography in the evaluation of symptomatic pregnant emergency department (ED) patients...
Differential use of diagnostic ultrasound in u.s. Emergency departments by time of day
JOHN C STEIN
University of California, San Francisco
West J Emerg Med 12:90-5. 2011
..Survey data over the last several decades suggests that emergency department (ED) access to diagnostic ultrasound performed by the radiology department is unreliable, particularly outside of regular business hours...
Emergency physician ultrasonography for evaluating patients at risk for ectopic pregnancy: a meta-analysis
JOHN C STEIN
Department of Emergency Medicine, University of California, San Francisco, CA 94143, USA
Ann Emerg Med 56:674-83. 2010
..We present a meta-analysis of the use of emergency physician ultrasonography in the evaluation of patients at risk of ectopic pregnancy...