251
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Stein IM, Fallon M, Merisalo RL, Kennedy JL. The frequency of apnea and bradycardia in a population of healthy, normal infants. Neuropediatrics 1983; 14:73-5. [PMID: 6877530 DOI: 10.1055/s-2008-1059556] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Twenty-four hour continuous pneumocardiogram recordings were obtained on 250 healthy, normal infants in a hospital nursery on the first to third days of life. 73% of the infants showed no apneic episodes greater than 15 seconds in duration. 5% demonstrated longest apneic episodes greater than 20 seconds in duration with a range up to 32 seconds. 4% showed episodes of periodic breathing and 32% showed bradycardia of less than 80 beats per minute. Subsequent follow-up did not reveal any cases of near miss-SIDS or SIDS. Sustained apnea and periodic breathing appear to be infrequent respiratory patterns in term infants.
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252
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Kennedy JL, Girgis GR, Rakhra GS, Nicholls DM. Protein synthesis in rat brain following neonatal exposure to lead. J Neurol Sci 1983; 59:57-68. [PMID: 6854344 DOI: 10.1016/0022-510x(83)90081-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
(1) Suckling rats were exposed to lead through the milk of their dams who received a diet of 4% lead carbonate and weanling rats were exposed to 2 injections of 5.0 mg Pb2+/100 g body weight. The brains were used to prepare the following homogenate fractions: postmitochondrial supernatant, postmicrosomal supernatant, ribosomes, initiation factors. (2) The postmitochondrial supernatant fractions were tested in vitro for protein synthesizing activity using the incorporation of labelled phenylalanine, and phenylalanyl-tRNA into peptide. The preparations from the lead-exposed rats had a significant reduction in activity. (3) Peptide formation with the brain ribosomes was not changed in the lead-exposed rats. (4) The aminoacyl-tRNA synthetase reaction was significantly reduced and accounted for most of the reduced peptide formation with brain homogenates from lead-exposed rats. (5) The binding of methionyl-tRNAfMet to ribosomes was increased using initiation factor preparations from the brain of lead-exposed rats.
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253
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Herschel M, Kennedy JL, Kayne HL, Henry M, Cetrulo CL. Survival of infants born at 24 to 28 weeks' gestation. Obstet Gynecol 1982; 60:154-8. [PMID: 7155474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Factors affecting the survival of 136 consecutive live-born infants delivered at 24 to 28 weeks' gestation during a 4-year period were analyzed. After careful assessment of gestational age, perinatal care for the fetus of at least 26 weeks' gestation was aggressive. Survival at 26 weeks was 45% and at 28 weeks, 92%. Multivariate analysis showed that the set of variables that best predicts neonatal outcome is gestational age, antepartum glucocorticoid administration, and resuscitation at birth.
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254
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Sbarra AJ, Cetrulo CL, Selvaraj RJ, Spinosa D, Herschel MJ, Blake GD, Delise CM, Kennedy JL, Mitchell GW. Surfactants, L/S ratio, amniotic fluid optical density and fetal pulmonary maturity. THE JOURNAL OF REPRODUCTIVE MEDICINE 1982; 27:34-8. [PMID: 6896530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Optical density readings of amniotic fluids of 0.15 or greater at 650 nm have been noted to correlate with fetal pulmonary maturity. The amniotic fluid absorbance has been shown to be due not only to lecithin and sphingomyelin but also to other surfactants, including phosphatidyl glycerol and inositol. The addition of lecithin and sphingomyelin to previously centrifuged amniotic fluid (i.e., optical) density less than 0.001: L/S ratio, nondetectable) results in an increase in absorbance. At any simulated L/S ratio, the addition of phosphatidyl glycerol and/or phosphatidyl inositol results in a further increase in optical density. It is suggested that optical density readings represent more closely the surfactant composition of amniotic fluid than L/S ratios; therefore, it appears that optical density measurements are a better predictor of fetal pulmonary development than are L/S ratios.
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255
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Kennedy JL, Greenwald E. Correlation of shoe size and obstetric outcome: an anthropometric study. Am J Obstet Gynecol 1981; 140:466-7. [PMID: 7246666 DOI: 10.1016/0002-9378(81)90048-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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256
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Sbarra AJ, Blake G, Cetrulo CL, Selvaraj RJ, Herschel MJ, Delise C, Kennedy JL, Mitchell GW. The effect of cervical/vaginal secretions on measurements of lecithin/sphingomyelin ratio and optical density at 650 nm. Am J Obstet Gynecol 1981; 139:214-6. [PMID: 7457538 DOI: 10.1016/0002-9378(81)90449-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Free-flowing amniotic fluid collected vaginally can be used in a reliable way for determination of fetal pulmonary maturity. Lavaging the vaginal/cervical area with sterile saline and examining the lavage fluid for lecithin/sphingomyelin (L/S) spots showed no detectable spots in the supernatants (one exception) and barely detectable L/S spots in the sediment. Vaginal-cervical saline-wash fluids did not affect fluid L/S ratios. Lavaging the vaginal-cervical area with abdominal amniotic fluid did not affect the L/S ratio of the original amniotic fluid.
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257
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Cetrulo CL, Sbarra AJ, Selvaraj RJ, Kappy KA, Herschel MJ, Knuppel RJ, Ingardia CJ, Kennedy JL, Mitchell GW. Amniotic fluid optical density and neonatal respiratory outcome. Obstet Gynecol 1980; 55:262-5. [PMID: 7352090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A simple, rapid, economical, and accurate test to assess fetal pulmonary maturity on a 24-hour basis, 7 days a week, is urgently needed. A 15-minute test has been developed that correlates well with fetal pulmonary maturity. Optical density (OD) readings at 650 nm of greater than or equal to 0.15 in pigment-free, centrifuged (2000 Xg, 10 minutes) amniotic fluids obtained from gestations of 33 to 42 weeks correlate with fetal pulmonary maturity (131 of 131, 100%). When OD readings are less than 0.15 in fluids from gestations of 24 to 40 weeks, and antepartum steroids are utilized, the incidence of respiratory distress syndrome (RDS) is 8.3% (14 of 169). The true false-negative rate in this group is therefore unknown.
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258
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Stein IM, White A, Kennedy JL, Merisalo RL, Chernoff H, Gould JB. Apnea recordings of healthy infants at 40, 44, and 52 weeks postconception. Pediatrics 1979; 63:724-30. [PMID: 440893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A total of 129 recordings of the respiratory activity of 46 normal full-term infants were obtained continuously for 24 hours in the hospital nursery at 3 days of life and in the home environment at 4 weeks and 12 weeks after birth. The pediatric pneumogram (PPG) technique, an impedance method, was used. Pneumogram data over longer than 16 hours was obtained on 77% of infants monitored. No infants experienced apnea longer than 15 seconds in duration at 40 and 44 weeks postconception, or greater than 11 seconds at 52 weeks postconception. Twenty-four hour plots of hourly apnea frequency revealed a marked variability, with evidence of clustering of apneic episodes during periods of reported sleep. Longest apnea time and hourly frequency of apneic episodes were highly correlated.
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259
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Knuppel RA, Cetrulo CL, Ingardia CJ, Kappy KA, Kennedy JL, Herschel MJ, Aumann G, Lake M, Sbarra AJ. Experience of a Massachusetts perinatal center. N Engl J Med 1979; 300:560-2. [PMID: 763259 DOI: 10.1056/nejm197903083001012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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260
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Phillips HE, Carter AP, Kennedy JL, Rosman NP, O'Connor JF. Aicardi's syndrome; radiologic manifestations. Radiology 1978; 127:453-5. [PMID: 644071 DOI: 10.1148/127.2.453] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Features of Aicardi's syndrome include infantile spasms associated with pathognomonic chorioretinopathy, abnormalities of the corpus callosum with heterotopia of gray matter, and characteristic electroencephalographic findings. Vertebral abnormalities are also part of the syndrome, which is apparently limited to female infants. Subnormal mental development appears in all cases. It was first described in 1969 in French. Isolated cases in the literature have been associated with facial asymmetry, plagiocephaly, and the Dandy-Walker syndrome. Experience with two patients suggests that a search for cases among patients with chorioretinopathy and infantile spasms will show the syndrome to be more common than currently reported.
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261
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Sbarra AJ, Selvaraj RJ, Cetrulo CL, Kennedy JL, Herschel MJ, Knuppel R, Kappy K, Mitchell GW, Kelley EC, Paul BB, Louis FJ. Positive correlation of optical density at 650 nm. with lecithin/sphingomyelin ratios in amniotic fluid. Am J Obstet Gynecol 1978; 130:788-90. [PMID: 637102 DOI: 10.1016/0002-9378(78)90009-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In this study, we have attempted to correlate optical density measurements of amniotic fluids with L/S ratios. We may conclude, with over a 98 per cent accuracy, that fluids having optical density readings of 0.15 and above, at 650 nm. will have an L/S ratio over 2.0. Fluids having optical density readings up to 0.05 will have L/S ratios of about 1.3. Finally, amniotic fluids having optical densities greater than 0.05 and less than 0.15 will have L/S ratios of approximately 1.5.
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262
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Sbarra AJ, Michlewitz H, Selvaraj RJ, Mitchell GW, Cetrulo CL, Kelley EC, Kennedy JL, Herschel MJ, Paul BB, Louis F. Relation between optical density at 650 nm and L/S ratios. Obstet Gynecol 1977; 50:723-4. [PMID: 927764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A simple and rapid test that correlates with L/S ratios has been developed. By centrifuging fresh, unfrozen amniotic fluids at 200g for 10 minutes and measuring the optical density at at 650 nm, correlation with L/S ratios is obtained. Optical density readings of 0.15 or greater correlate 100% with L/S ratios of 2.0 or greater. Optical readings below 0.15 correlate 94% with L/S ratios below 2.0.
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263
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Sbarra AJ, Michlewitz H, Selvaraj RJ, Mitchell GW, Cetrulo CL, Kelley EC, Kennedy JL, Herschel MJ, Paul BB, Louis F. Correlation between amniotic fluid optical density and L/S ratio. Obstet Gynecol 1976; 48:613-5. [PMID: 980289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A test that circumvents the complex methodology needed for the determination of L/S ratios has been developed. It has been observed that the optical density, measured at 400 nm, of supernatants collected from fresh amniotic fluids centrifuged at 2000 g for 10 minutes correlates with L/S ratios.
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264
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Waechter CJ, Kennedy JL, Harford JB. Lipid intermediates involved in the assembly of membrane-associated glycoproteins in calf brain white matter. Arch Biochem Biophys 1976; 174:726-37. [PMID: 820267 DOI: 10.1016/0003-9861(76)90403-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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265
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Kennedy JL, Snyder JW, Otero RB. Inhibition of Neisseria catarrhalis NE-11 transformation. EXPERIENTIA 1974; 30:1147-9. [PMID: 4373272 DOI: 10.1007/bf01923657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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266
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Sbarra AJ, Selvaraj RJ, Kennedy JL, Mitchell GW, Paul BB. A new amniotic fluid lecithin button test. Obstet Gynecol 1974; 44:500-2. [PMID: 4411682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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267
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Levy HL, Shih VE, Karolkewicz V, French WA, Carr JR, Cass V, Kennedy JL, MacCready RA. Persistent mild hyperphenylalaninemia in the untreated state. A prospective study. N Engl J Med 1971; 285:424-9. [PMID: 5557279 DOI: 10.1056/nejm197108192850802] [Citation(s) in RCA: 44] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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268
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Dodson WE, Museles M, Kennedy JL, al-Aish M. Acrocephalosyndactylia associated with a chromosomal translocation. 46,XX, t (2p-; Cq+). AMERICAN JOURNAL OF DISEASES OF CHILDREN (1960) 1970; 120:360-2. [PMID: 5493837 DOI: 10.1001/archpedi.1970.02100090134019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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269
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Schulman JD, Lustberg TJ, Kennedy JL, Museles M, Seegmiller JE. A new variant of maple syrup urine disease (branched chain ketoaciduria). Clinical and biochemical evaluation. Am J Med 1970; 49:118-24. [PMID: 5431474 DOI: 10.1016/s0002-9343(70)80121-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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270
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Kennedy JL, Wertelecki W, Gates L, Sperry BP, Cass VM. The early treatment of phenylketonuria. AMERICAN JOURNAL OF DISEASES OF CHILDREN (1960) 1967; 113:16-21. [PMID: 6016173 DOI: 10.1001/archpedi.1967.02090160066004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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271
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Kennedy JL, Koslin BL, Schroder HM, Blackman S, Ramsey JO, Helm CE. Cognitive patterning of complex stimuli: a symposium. THE JOURNAL OF GENERAL PSYCHOLOGY 1966; 74:25-49. [PMID: 5901603 DOI: 10.1080/00221309.1966.9710307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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272
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Kennedy JL. But What Are the Behavioral Sciences?:
Human Behavior—An Inventory of Scientific Findings
. Bernard Berelson. Harcourt, Brace and World, 1964. 735 pp. $11. Science 1964; 144:683-4. [PMID: 17806995 DOI: 10.1126/science.144.3619.683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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273
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Kennedy JL, Gottsdanker RM, Armington JC, Gray FE. A New Electroencephalogram Associated With Thinking. Science 1948; 108:527-9. [PMID: 17758878 DOI: 10.1126/science.108.2811.527] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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274
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275
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Kennedy JL, Stone CP. Cross-sectional area of maze pathways in relation to learning by rats. J Comp Psychol 1936. [DOI: 10.1037/h0060197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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