Effect of patent ductus arteriosus on doppler-derived right ventricular systolic time intervals

1993 ◽  
Vol 14 (3) ◽  
pp. 155-158 ◽  
Author(s):  
G. Michael Silberbach ◽  
Randall L. Imus ◽  
Robert W. McDonald ◽  
Kerri Andrilenas ◽  
Mary J. Rice ◽  
...  
Keyword(s):  
Patent Ductus Arteriosus ◽  
Right Ventricular ◽  
Ductus Arteriosus ◽  
Systolic Time Intervals ◽  
Time Intervals ◽  
Systolic Time ◽  
Patent Ductus

Value of Systolic Time Intervals in the Diagnosis of Large Patent Ductus Arteriosus in Fluid-Restricted and Mechanically Ventilated Preterm Infants

PEDIATRICS ◽  
1984 ◽  
Vol 74 (6) ◽  
pp. 1069-1074
Author(s):  
François Heitz ◽  
Jean-Claude Fouron ◽  
Nicolaas H. van Doesburg ◽  
Harry Bard ◽  
François Teasdale ◽  
...  
Keyword(s):  
Patent Ductus Arteriosus ◽  
Right Ventricular ◽  
Ductus Arteriosus ◽  
Systolic Time Intervals ◽  
Left Ventricular ◽  
Ejection Time ◽  
Time Intervals ◽  
Systolic Time ◽  
Ventricular Ejection Time ◽  
Patent Ductus

M-mode echocardiographic features suggesting a patent ductus arteriosus are based on two groups of indirect criteria: dilation of the left cardiac cavities and changes of systolic time intervals. The reliability of the first group of criteria has been questioned in fluidlimited, mechanically ventilated preterm infants. The sensitivity of the systolic time intervals in the same circumstances is investigated. Twenty-three patients with a large patent ductus arteriosus were selected. Review of their echocardiograms shows that the sensitivity of the various criteria (expressed as percentage of positivity) was as follows: inversion of the ratio of left ventricular preejection period to right ventricular preejection period, 91.3%; left ventricular preejection period to left ventricular ejection time over right ventricular preejection period to right ventricular ejection time < 1, 83%; left atrium dilation, 74%; shortening of left ventricular preejection period, 70%; dilation of left ventricular internal dimensions in diastole, 65%; increase in left atrium/aorta, 52%; and decrease of left ventricular preejection period to left ventricular ejection time, 48%. Three criteria involving time intervals (left ventricular preejection period to right ventricular preejection period, left ventricular preejection period, and left ventricular preejection period to left ventricular ejection time) had 100% specificity. The lowest specificity was found with criteria involving the left atrium (left atrial to aortic root ratio 75% and left atrium 63%). It is concluded that study of systolic time intervals is a reliable means of detecting preterm infants with hemodynamically significant left-to-right shunt through a patent ductus arteriosus even if the infants are mechanically ventilated and fluid restricted.

scholarly journals 1408 PROSTAGLANDINS AND SYSTOLIC TIME INTERVALS (LVSTI) IN THE DIAGNOSIS OF PATENT DUCTUS ARTERIOSUS (PDA)

1985 ◽  
Vol 19 (4) ◽  
pp. 345A-345A
Author(s):  
Cathy Hammerman ◽  
Elene Strates ◽  
Stuart Berger ◽  
William Zia ◽  
Abdul Aldousany
Keyword(s):  
Patent Ductus Arteriosus ◽  
Ductus Arteriosus ◽  
Systolic Time Intervals ◽  
Time Intervals ◽  
Systolic Time ◽  
Patent Ductus

Echocardiographic systolic time intervals in premature infants with patent ductus arteriosus

1980 ◽  
Vol 1 (2) ◽  
pp. 103-107 ◽  
Author(s):  
Gregory L. Johnson ◽  
Nirmala S. Desai ◽  
Carol M. Cottrill ◽  
Marianne Johnson ◽  
Jacqueline A. Noonan
Keyword(s):  
Patent Ductus Arteriosus ◽  
Premature Infants ◽  
Ductus Arteriosus ◽  
Systolic Time Intervals ◽  
Time Intervals ◽  
Systolic Time ◽  
Patent Ductus

ERRATUM

PEDIATRICS ◽  
1985 ◽  
Vol 75 (3) ◽  
pp. 613-613
Keyword(s):  
Patent Ductus Arteriosus ◽  
Preterm Infants ◽  
Ductus Arteriosus ◽  
Systolic Time Intervals ◽  
Time Intervals ◽  
Mechanically Ventilated ◽  
Systolic Time ◽  
Patent Ductus

In the article "Value of Systolic Time Intervals in the Diagnosis of Large Patent Ductus Arteriosus in Fluid-Restricted and Mechanically Ventilated Preterm Infants" by Heitz et al (Pediatrics 1984;74:1069-1074), there is an error in the text. The last sentence of the second paragraph on page 1073 should reath All of these infants had a ratio of LPEP to RPEP > 1.

scholarly journals Alteration of Systolic Time Intervals in Right Ventricular Failure

Circulation ◽  
1974 ◽  
Vol 50 (2) ◽  
pp. 317-323 ◽  
Author(s):  
JOSEPH S. ALPERT ◽  
FRANK D. RICKMAN ◽  
JOHN P. HOWE ◽  
LEWIS DEXTER ◽  
JAMES E. DALEN
Keyword(s):  
Right Ventricular ◽  
Systolic Time Intervals ◽  
Right Ventricular Failure ◽  
Ventricular Failure ◽  
Time Intervals ◽  
Systolic Time

scholarly journals Assessment of the pulmonary vascular bed by echocardiographic right ventricular systolic time intervals.

Circulation ◽  
1978 ◽  
Vol 57 (5) ◽  
pp. 939-947 ◽  
Author(s):  
T Riggs ◽  
S Hirschfeld ◽  
G Borkat ◽  
J Knoke ◽  
J Liebman
Keyword(s):  
Right Ventricular ◽  
Systolic Time Intervals ◽  
Time Intervals ◽  
Vascular Bed ◽  
Systolic Time ◽  
Pulmonary Vascular Bed

Neonatal Circulatory Changes: An Echocardiographic Study

PEDIATRICS ◽  
1977 ◽  
Vol 59 (3) ◽  
pp. 338-344
Author(s):  
Thomas Riggs ◽  
Stephen Hirschfeld ◽  
Connie Bormuth ◽  
Avroy Fanaroff ◽  
Jerome Liebman
Keyword(s):  
Right Ventricular ◽  
Systolic Time Intervals ◽  
Left Ventricular ◽  
Ventricular Ejection ◽  
Left Ventricular Ejection ◽  
Ejection Time ◽  
Time Intervals ◽  
Systolic Time ◽  
The Right ◽  
Ventricular Ejection Time

Serial echocardiograms were performed in the first three days of life on 38 normal full-term infants. Right ventricular systolic time intervals were measured from the pulmonic valve echogram and left ventricular systolic time intervals were determined from the aortic valve echogram. The heart rate, left ventricular pre-ejection period (LPEP), left ventricular ejection time (LVET), and LPEP/LVET ratio showed insignificant variation with increasing postnatal age. The right ventricular pre-ejection period (RPEP) shortened, the right ventricular ejection time (RVET) lengthened, and the RPEP/RVET ratio decreased with increasing age. The findings suggested that alterations in the RPEP/RVET ratio reflected the decreasing pulmonary artery diastolic pressure and pulmonary vascular resistance of the early neonatal period and may be valuable in the noninvasive evaluation of the newborn's pulmonary vascular bed.

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