Predictors of pregnancy and postpartum haemoglobin concentrations in low-income women   总被引：1，自引：0，他引：1  

Bodnar LM  Siega-Riz AM  Arab L  Chantala K  McDonald T 《Public health nutrition》2004,7(6):701-711

OBJECTIVE: Pregnancy and postpartum iron status is of great public health importance, yet few studies have examined predictors of haemoglobin (Hb) concentration during this time. We identified predictors of Hb from 24 weeks' gestation until delivery and from 4 to 25 weeks postpartum. DESIGN: Blood was drawn as many as four times during care: at the initial visit, at 24-29 weeks' gestation, at delivery and postpartum. A longitudinal, multivariable linear regression model was used to predict Hb concentration. SETTING: A public health clinic in Raleigh, North Carolina.Subjects: n=520 women who participated in the Iron Supplementation Study. RESULTS: Hb concentration at the previous blood draw, short stature, non-Hispanic white ethnicity/race, >12 years of education and smoking were positive predictors of pregnancy and postpartum Hb concentrations. Iron supplement use was a positive predictor, while inadequate weight gain and severe nausea/vomiting were negative predictors of gestational Hb. A high infant birth weight and postpartum haemorrhage were negative predictors of postpartum Hb. Pre-pregnancy body mass index had a slight positive relationship with gestational Hb, but had a strong negative relationship with postpartum Hb. The longitudinal model also confirmed the typical pattern of gestational Hb concentration. As the number of weeks between the initial visit and the 24- to 29-week visit increased, Hb at 24-29 weeks' gestation decreased. As gestational age increased from 24 weeks until delivery, Hb concentration increased as well. CONCLUSIONS: The predictors identified here could be used in clinical settings to target high-risk women for intervention.  相似文献   

Molecular interactions with dietary fiber components. Investigation of the possible association of pectin and bile acids   总被引：1，自引：0，他引：1  

P E Pfeffer  L W Doner  P D Hoagland  G G McDonald 《Journal of agricultural and food chemistry》1981,29(3):455-461

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Akabane disease in sheep   总被引：1，自引：0，他引：1  

KG HAUGHEY  WJ HARTLEY†  AJ DELLA-PORTA‡  MD MURRAY§ 《Australian veterinary journal》1988,65(5):136-140

Perinatal lamb mortality, associated with malformations of the CNS due to Akabane viral infection, occurred in 4 of 9 flocks of ewes lambing on 3 farms between 26 May and 14 November, 1976. Cases were restricted to ewes conceiving prior to the second week of March and lambing between 26 May and 19 July. As judged by seroconversion in sentinel flocks on 2 of the farms, field infection with Akabane virus occurred mainly between mid-February and mid-April. Malformations of the CNS occurred in 42.5%, 51.2%, 100% and 31.0% of the dead lambs examined in the affected flocks respectively. Prevalence in the 4 affected flocks, expressed as the proportion of ewes lambing which delivered at least one malformed foetus, was 6.1%, 8.4%, 88.9% and 5.7% respectively. Lamb mortality due to malformations of the CNS was 7.1%, 5.5%, 92.3% and 5.7% of lambs born. Age-specific prevalence was calculated for 3 of the 4 flocks and 2-year-old ewes accounted for 71.4% and 76.9% of total cases respectively in 2 flocks, whereas in one flock malformations occurred at equivalent frequencies throughout several older age groups. Birthweights of affected lambs were usually significantly lighter than those of unaffected lambs of similar sex and birth-type, and their mean duration of gestation was slightly, and significantly, prolonged. Micrencephaly (88.1% of cases) and hydrocephalus (68.7% of cases) were the outstanding pathological features of the malformations with hydranencephaly, microgyria, porencephaly and attenuation of the spinal cord occurring at much lower frequencies.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

Avian pox in blue-fronted Amazon parrots     

S E McDonald  L J Lowenstine  A A Ardans 《Journal of the American Veterinary Medical Association》1981,179(11):1218-1222

During a 1-month period at a quarantine station, an epornitic of avian pox occurred in blue-fronted Amazon parrots (Amazona aestiva). Clinical signs included conjunctivitis, blepharitis, and varying degrees of anorexia and respiratory distress. Lesions included periocular ulcerations and scabs and necrotic plaques in the oral cavity. Histologically, the lesions consisted of epithelial hyperplasia, secondary inflammatory changes, and eosinophilic inclusions which, by electron microscopy, were shown to contain poxvirus. When chicken embryos were inoculated with material from eyelid scabs and pharyngeal plaques, lesions of avian pox developed on the chorioallantoic membrane. The death rate of infected birds was high because of secondary bacterial and fungal infections, but uncomplicated cases were usually self-limiting. Periocular lesions also developed in 2 other species of psittacine birds housed in the same facility.  相似文献   

CORRECTION.     

M. W. McDonald   《Australian veterinary journal》1956,32(10):288-288

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NOW YOU SEE IT     

I. McDonald 《Australian veterinary journal》1978,54(4):192-192

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PHYSIOLOGICAL LIMITATIONS ON REPRODUCTION IN THE SHEEP     

I. W. McDonald  B.V.Sc.  B.Sc.  Ph.D. 《Australian veterinary journal》1961,37(4):99-104

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ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTION USING A COMPOSITE COLLAGENOUS PROSTHESIS: A BIOMECHANICAL AND HISTOLOGIC STUDY IN RABBITS     

Dunn MG  Tria AJ  Kato YP  Bechler JR  Ochner RS  Zawadsky JP  Silver FH 《Veterinary surgery : VS》1993,22(1):56-56

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Assessment of tetracycline and Babesia culture supernatant as prophylactics for moderating reactions in cattle to live Babesia and Anaplasma vaccines     

WK JORGENSEN  RE BOCK  TG KINGSTON  AJ DE VOS  SJ WALDRON 《Australian veterinary journal》1993,70(1):35-36

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Mesenteric tear of the distal jejunum as a periparturient complication in a mare     

AJ DART  JR PASCOE 《Australian veterinary journal》1994,71(12):427-428

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