Effect of halogen light stimulation on nonstress testing
| Autor: | Jay M. Bolnick, Bruno J Caridi, William F. Rayburn, Beverly G. Fletcher |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
medicine.medical_specialty
Light Pregnancy Trimester Third LIGHT STIMULATION Stimulation Sensitivity and Specificity Nonstress test Fetal Distress law.invention law Pregnancy Reference Values medicine Confidence Intervals Humans Fetal Monitoring Probability medicine.diagnostic_test business.industry Medical screening Obstetrics and Gynecology Heart Rate Fetal Surgery Fetal heart rate Halogen lamp Anesthesia embryonic structures Female business Photic Stimulation |
| Zdroj: | American journal of obstetrics and gynecology. 190(5) |
| ISSN: | 0002-9378 |
| Popis: | This study was undertaken to determine whether external stimulation using a halogen light source influences fetal heart rate (FHR) responsiveness and nonstress test results.A total of 107 patients at 32 to 42 weeks' gestation undergoing a nonstress test were randomly assigned to have either transabdominal light stimulation or no light stimulation. The light (Vector Compact Sport Spot, Ft Lauderdale, Fla) was turned on for 10 seconds. If no qualifying FHR acceleration was observed, then the stimulus was repeated at 10-minute intervals for a maximum of 3 times. The investigators were blinded as to light stimulation for FHR interpretation.Reactive results were present in 52 cases in each group. Light stimulation led to a significantly shorter time (P.02) until the first FHR acceleration (difference: 2.1 minutes; 95% CI 0.4-3.8 minutes). The height and width of the first acceleration were indistinguishable between groups. The time until a reactive result was significantly shorter after light stimulation (difference: 4.2 minutes; 95% CI 2.0-6.4 minutes).The earlier onset of FHR accelerations after halogen light stimulation prompted a more rapid reactive nonstress test result. |
| Databáze: | OpenAIRE |
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