title: Cardiac massage efficacy monitored by Doppler ultrasonic flowmeter. A preliminary report.
mesh_terms: D000293:Adolescent; D000368:Aged; D001783:Blood Flow Velocity; D005260:Female; D006323:Heart Arrest / Q000628:therapy; D006336:Heart Massage; D006801:Humans; D008875:Middle Aged; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D014463:Ultrasonography