title: Ultrasound evaluation of tachycardia-induced hydrops in the fetal lamb.
abstract: Nonimmune hydrops was induced in six fetal lambs at 120 days' gestation by right atrial pacing at 300 beats/min. Biochemical, hemodynamic, and Doppler parameters were observed and monitored by real-time ultrasound during the creation (18 to 42 hours) and resolution of hydrops. The significant changes seen were hypoproteinemia (34.3 to 29.0 mg/100 ml), venous hypertension (24.6 to 31.3 mm Hg), decreases in thoracic aorta flow, and decreases in systolic/diastolic ratios in the aorta and umbilical artery. These changes were reversed with the discontinuation of pacing and the resolution of fetal hydrops.
authors.forename: C
authors.initials: C
authors.lastname: Nimrod
authors.forename: D
authors.initials: D
authors.lastname: Davies
authors.forename: J
authors.initials: J
authors.lastname: Harder
authors.forename: S
authors.initials: S
authors.lastname: Iwanicki
authors.forename: C
authors.initials: C
authors.lastname: Kondo
authors.forename: Y
authors.initials: Y
authors.lastname: Takahashi
authors.forename: J
authors.initials: J
authors.lastname: Maloney
authors.forename: D
authors.initials: D
authors.lastname: Persaud
authors.forename: S
authors.initials: S
authors.lastname: Nicholson
mesh_terms: D000818:Animals; D002304:Cardiac Pacing, Artificial; D004487:Edema / Q000175:diagnosis* / Q000209:etiology; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis* / Q000209:etiology; D006340:Heart Rate, Fetal; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012756:Sheep; D013610:Tachycardia / Q000150:complications*; D014463:Ultrasonography