The relationship in our study between increased mortality and delay in door-to-balloon time longer than 2 hours (present in nearly 50% of this cohort) suggests that physicians and health care systems should work to minimize door-to-balloon times and that door-to-balloon time should be considered when choosing a reperfusion strategy. Door-to-balloon time also appears to be a valid quality-of-care indicator. JAMA. 2000.
The reported prenatal detection rates (PDRs) for significant congenital heart disease (sCHD) have been suboptimal, even in the current era. Changes in prenatal ultrasound policy and training may lead to improved prenatal detection of sCHD. This study analyzed the results of a policy to assess fetal cardiac outflow tracts shown by screening prenatal ultrasound using the electronic medical record (EMR). During a 6-year period, fetuses and patients younger than 1 year with sCHD were identified. The EMR was used to gather detection and outcome data. As an internal control within the same health care system, the PDR of only the surgical cases was compared with that of a similar group in which documentation of the fetal cardiac outflow tracts was not standard policy. Among 25,666 births, sCHD was identified in 93 fetuses or patients, yielding an incidence of 3.6 per 1,000 births. The PDR was 74.1%. Detection after birth but before discharge was 20.4%, and detection after discharge was 5.4%. A significant improvement in the PDR of sCHD was found when a concerted effort was made to obtain fetal cardiac outflow tract views during pregnancy screening (59.3 vs. 28%). Within an integrated health care system and with the use of an EMR, a PDR of 74% can be obtained, and 94% of sCHD can be detected before discharge. A concerted program that includes documentation of fetal cardiac outflow tracts in the pregnancy screening can result in improved PDR of sCHD.
Because of operator errors, measurements with time-domain processing should be repeated at least three times to ensure accuracy and may be inaccurate in flow rates over 500 mL/min.
After the bidirectional cavopulmonary or Fontan operation, the physiologic consequence is passive flow of the systemic venous return to the pulmonary arteries. Knowledge of pulmonary artery pressure (PA) is valuable in the management of these patients, and obtaining this information without the need for a central line or cardiac catheterization would be advantageous. The aim of this study was to evaluate the correlation between upper extremity peripheral venous (PV) pressures and PA or superior vena cava (SVC) pressures in patients who have undergone cavopulmonary or Fontan connections. During cardiac catheterization, 19 patients with complex cyanotic heart disease who had undergone a cavopulmonary shunt or Fontan procedure were studied. Simultaneous pressure measurements were obtained from the peripheral intravenous line placed prior to the procedure and the SVC or PA. The mean pressures were compared. The mean PV pressure was 17.5 +/- 5.6 mmHg. The mean SVC or PA pressure was 16.1 +/- 5.4 mmHg. The mean difference was 1.5 +/- 1.5 mmHg ( p < 0.001). The correlation coefficient PV to SVC or PA pressure was 0.97 ( p < 0.001). PV pressure measurements taken from an upper extremity accurately reflect PA pressures in patients who have undergone a cavopulmonary shunt or Fontan procedure.
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