The Indiana Prenatal Substance Use Prevention Program: its impact on smoking cessation among high-risk pregnant women.

The Indiana Prenatal Substance Use Prevention Program (PSUPP) was established in 1988 to help pregnant women quit cigarette smoking as well as alcohol and drugs. PSUPP directors implement the Screen, Intervene and Follow-up (SIF) model to assess substance use and provide services to help clients stop smoking. During fiscal year 1995, almost 25,000 individuals were impacted directly or indirectly by the PSUPP. Of these, 1,334 pregnant women were screened for substance use by PSUPP. Of the 987 women identified with a known substance use risk factor, 42.4% (418) were high-risk smokers (more than five cigarettes per day) and 9.9% (98) were medium-risk smokers (smoking between one and four cigarettes per day). PSUPP directors counseled their high/medium risk smokers an average of four times during their pregnancy. The PSUPP appears to be effective in getting high-risk smokers to change their smoking behavior during their pregnancy. Approximately one-half (49.9%) of the 516 high- or medium-risk smokers decreased or quit smoking while participating in the PSUPP. When surveyed, about 80% of the PSUPP participants stated that the knowledge they gained through PSUPP relative to tobacco use was "very helpful." Only two-thirds of the PSUPP clients responded that they "strongly agreed" with the statement that tobacco use causes babies to have a lower birth weight. While pregnancy may provide the "teachable moment" for women who smoke, more attention needs to be placed on making women more aware of the risks involved with smoking during pregnancy.

Spinal cord monitoring in scoliosis surgery. Experience with 1168 cases.

Since 1981, during operations for spinal deformity, we have routinely used electrophysiological monitoring of the spinal cord by the epidural measurement of somatosensory evoked potentials (SEPs) in response to stimulation of the posterior tibial nerve. We present the results in 1168 consecutive cases. Decreases in SEP amplitude of more than 50% occurred in 119 patients, of whom 32 had clinically detectable neurological changes postoperatively. In 35 cases the SEP amplitude was rapidly restored, either spontaneously or by repositioning of the recording electrode; they had no postoperative neurological changes. One patient had delayed onset of postoperative symptoms referrable to nerve root lesions without evidence of spinal cord involvement, but there were no false negative cases of intra-operative spinal cord damage. In 52 patients persistent, significant, SEP changes were noted without clinically detectable neurological sequelae. None of the many cases which showed falls in SEP amplitude of less than 50% experienced neurological problems. Neuromuscular scoliosis, the use of sublaminar wires, the magnitude of SEP decrement, and a limited or absent intra-operative recovery of SEP amplitude were identified as factors which increased the risk of postoperative neurological deficit.

Lower limb lengthening by a modified Wagner technique.

A series of 50 patients who underwent femoral and tibial lengthenings using the Wagner apparatus is reviewed. Satisfactory gains in leg length with an acceptably low complication rate were achieved. Both substitution of cortical osteotomy for complete osteotomy and delaying of distraction increased callus formation. The particular problems of lengthening the congenital short femur and tibia are discussed.