[Venous hum and innominate vein flow velocity in chronic anemia: a pulsed Doppler echocardiographic study].
To assess the hemodynamic correlates of the cervical venous hum in patients with chronic anemia, 14 patients (mean age; 49 years, mean hemoglobin (Hb); 7.3 g/dl) and 14 control subjects (mean age; 50 years, mean Hb; 14 g/dl) without cardiac disease were studied by auscultation, phonocardiography and Doppler echocardiography in two positions (supine and sitting). Venous hum was detected in the sitting position in 11 of the 14 anemic patients whose Hb was less than 9 g/dl, and in six anemic patients in the supine position, while venous hum was absent in the control subjects in both positions. Pulsed Doppler echocardiography with the transducer in the supraclavicular fossa revealed significantly (p less than 0.01) higher peak velocity in the innominate vein in the 11 anemic patients with venous hum (supine; 71 +/- 12, sitting; 111 +/- 24 cm/sec, mean +/- SD) than in the control subjects (supine; 46 +/- 15 sitting; 76 +/- 27 cm/sec) in both positions. Intensity of venous hum increased concomitantly with increased innominate vein flow velocity when the body position was changed from supine to sitting. Peak velocity in the innominate vein correlated significantly with Hb in all study subjects (r = 0.65, p less than 0.01). In conclusion, the cervical venous hum in patients with chronic anemia is related to the hemoglobin concentration and flow velocity in the innominate vein.
Shiota
T
T
Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo.
Sakamoto
T
T
Amano
K
K
Takenaka
K
K
Hasegawa
I
I
Suzuki
J
J
Amano
W
W
Saito
Y
Y
Sugimoto
T
T
D000293:Adolescent; D000328:Adult; D000368:Aged; D000740:Anemia / Q000097:blood / Q000503:physiopathology*; D001314:Auscultation; D001783:Blood Flow Velocity; D016121:Brachiocephalic Veins / Q000503:physiopathology*; D002908:Chronic Disease; D015150:Echocardiography, Doppler; D005260:Female; D006454:Hemoglobins / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D009333:Neck / Q000098:blood supply*; D010701:Phonocardiography; D011187:Posture; D014680:Veins / Q000503:physiopathology
D006454:Hemoglobins