PMID- 8214736
OWN - NLM
STAT- MEDLINE
DCOM- 19931118
LR  - 20190704
IS  - 0003-2999 (Print)
IS  - 0003-2999 (Linking)
VI  - 77
IP  - 5
DP  - 1993 Nov
TI  - Reliability of a new generation transesophageal Doppler device for cardiac output 
      monitoring.
PG  - 971-9
AB  - A new generation continuous-wave transesophageal Doppler (TED) device for cardiac 
      output (CO) monitoring (Accucom 2, Datascope), which displays aortic blood flow 
      velocity in real time, was evaluated by 140 simultaneous comparisons with 
      thermodilution (TD) in 16 patients early after coronary artery bypass surgery. 
      The aim was to determine whether this technologic advancement improves the 
      accuracy of COTED assessment. Absolute COTED values showed a considerable scatter 
      as compared to COTD [COTED = 1.77 + 0.75.COTD (L/min), r = 0.52]. The bias, i.e., 
      the mean of individual CO differences (COTD-COTED) was -0.37 +/- 1.70 L/min (SD). 
      In contrast, relative CO changes (delta CO, % of preceding value) showed a 
      satisfactory agreement between TED and TD [delta COTED = 1.04 + 0.91.delta COTD 
      (%), r = 0.84, n = 124], the bias (delta COTD-delta COTED) being -0.66 +/- 9.72%. 
      In 8 of 124 situations (6.45%), however, significant COTED changes opposite in 
      direction to that of significant COTD changes occurred. This frequency was 
      significantly greater (P < 0.01) than the ideal frequency of 0%. The agreement 
      between delta COTD and delta COTED improved (P < 0.05) when the aortic diameter 
      changes induced by changes in mean arterial pressure were considered [delta 
      COTEDMAPC = 1.10 + 0.95.delta COTD (%), r = 0.87, n = 124]. Compared with 
      previous results, the reliability of the second generation device to monitor 
      relative CO changes was considerably improved. Provided that the aortic blood 
      flow velocity signal was stable and free from any disturbances, the second 
      generation TED device may be regarded acceptable for CO trend monitoring in 
      sedated, paralyzed patients.(ABSTRACT TRUNCATED AT 250 WORDS)
FAU - Schmid, E R
AU  - Schmid ER
AD  - Division of Cardiovascular Anesthesia, University Hospital, Zurich, Switzerland.
FAU - Spahn, D R
AU  - Spahn DR
FAU - Tornic, M
AU  - Tornic M
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Anesth Analg
JT  - Anesthesia and analgesia
JID - 1310650
SB  - IM
MH  - Adult
MH  - Cardiac Output/*physiology
MH  - *Coronary Artery Bypass
MH  - Echocardiography, Doppler/*instrumentation/methods
MH  - Echocardiography, Transesophageal/*instrumentation/methods
MH  - Elective Surgical Procedures
MH  - Evaluation Studies as Topic
MH  - Humans
MH  - Monitoring, Physiologic/*instrumentation
MH  - Reproducibility of Results
EDAT- 1993/11/01 00:00
MHDA- 1993/11/01 00:01
CRDT- 1993/11/01 00:00
PHST- 1993/11/01 00:00 [pubmed]
PHST- 1993/11/01 00:01 [medline]
PHST- 1993/11/01 00:00 [entrez]
AID - 10.1213/00000539-199311000-00017 [doi]
PST - ppublish
SO  - Anesth Analg. 1993 Nov;77(5):971-9. doi: 10.1213/00000539-199311000-00017.