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Biomedical subjects

R L Washington

Publications and source records attributed to R L Washington.

24 records · Page 2Linked to original sources
PubMed1989

Cardiac dysrhythmia with the use of clonidine in explosive disorder.

Clonidine has been used in the management of hypertension in adults with few cases of cardiac dysrhythmia reported. These appear to occur most frequently in association with preexisting cardiac disease or toxic concentrations of the drug. We observed a case of clonidine-induced bradycardia and irregular firing of the sinoatrial node in a child who does not have cardiac disease given low doses of the drug in the treatment of intermittent explosive disorder.

Arrhythmias, Cardiac↗
PubMed1989

Paralyzed left vocal cord associated with ligation of patent ductus arteriosus.

We reviewed the records of 167 neonates and older children undergoing ligation of a patent ductus arteriosus to determine the prevalence of recurrent laryngeal nerve injury and identify risk factors that might increase the likelihood of injury. Paralysis or paresis of the left vocal cord was identified by fiberoptic laryngoscopy in seven patients. All seven weighted less than 1500 gm at the time of operation and the ductus had been ligated with a metal clip. All had persistent symptoms when observed for 5 to 19 months. Injury to the left recurrent laryngeal nerve occurs infrequently but may have long-term consequences.

Child↗
PubMed1988

Normal aerobic and anaerobic exercise data for North American school-age children.

The purpose of this study was to establish normative data for untrained, healthy North American children by means of the James protocol for bicycle ergometry. Data were obtained on 151 of 185 children (70 girls and 81 boys). Their ages ranged from 7 years 6 months to 12 years 9 months. All subjects were divided into groups by gender and body surface area (BSA). Maximum heart rates were greater in girls. The mean difference between maximum and recovery heart rates differed significantly by gender, girls taking longer to recover than boys. Maximum oxygen consumption (measured in cubic centimeters per minute per kilogram body weight) did not differ in boys and girls. Ventilatory anaerobic threshold (VAT) occurred when there was an isolated increase in the slope for ventilatory equivalent for oxygen consumption (VE/VO2) with no change in the slope for ventilatory equivalent for carbon dioxide production (VE/VCO2) when both were plotted against time. Absolute oxygen consumption (VO2) at VAT increased with BSA in both sexes, and, when normalized to body size and expressed as a percent of VO2 maximum, no significant difference was observed between the sexes. These data may be used in the fitness evaluations of preadolescent children from North America.

Aerobiosis↗
PubMed1986

Aortic translocation and biventricular outflow tract reconstruction in an infant.

Successful surgical repair of an 8 1/2-month-old infant weighing 8 kg with d-transposition of the great arteries associated with ventricular septal defect and left ventricular outflow tract obstruction was accomplished utilizing a recently described technique. To our knowledge, this is the first attempt to use this technique in an infant.

Aorta↗