Brain tumor surgery in geriatric patients: a critical analysis in 44 patients over 80 years.

BACKGROUND: The decision of whether to operate on brain tumors in elderly patients has not been made easier despite diagnostic and therapeutic advances facilitating their diagnosis. Little is known about the outcome of brain tumor surgery in patients 80 years or older probably because the number of these patients, although increasing, is still small. METHODS: The results of brain tumor surgery in 44 patients aged 80-86 years (mean age 83 years) were analyzed to determine which factors are relevant in the evaluation of the operative risk. The following parameters were analyzed with regard to the outcome: tumor volume, location, histopathology, preoperative condition, and concomitant diseases. RESULTS: At discharge 19 patients (43%) had improved while 14 (32%) remained unchanged. Nevertheless, the overall results were unsatisfactory in 10 patients (23%), of whom 5 died in hospital. Tumor location, volume, and histopathology did not correlate with the outcome. The preoperative cerebrovascular condition and the existence of multiple concomitant diseases were clearly the determining factors for the outcome. CONCLUSIONS: These results indicate that patients with life-threatening tumors or those causing persistent and intolerable brain dysfunction suffering from symptomatic cerebrovascular atherosclerosis as well as from multiple treatment requiring concomitant diseases did definitely not benefit from surgery.

Glycosylated hemoglobin as a predictor of fetal pulmonic maturity in insulin-dependent diabetes at term.

In insulin dependent diabetic (IDDM) gestations, fetal pulmonary maturity is delayed in the presence of suboptimal glycemic control. Serum glycosylated hemoglobin (HbA1c) provides a means of assessing glycemic control. We evaluated maternal HbA1c in IDDM pregnancies at term undergoing amniocentesis for lung maturity to establish if euglycemia is associated with improved fetal lung maturity. Between July 1995 and June 1996, IDDM patients undergoing amniocentesis at term for lung maturity studies had a maternal serum sample analyzed for HbA1c. Fetal lung maturity was established by the presence of phosphatidylglycerol (PG) in amniotic fluid. HbA1c was considered elevated if >6.2%. Mean HbA1c level was 6.8% (range 4.4 to 9.9%). PG was present in 54% of patients with elevated HbA1c (7/13) versus 80% of those with normal HbA1c (8/10) (p = 0.4). Although birth weight was higher in the elevated than in the normal HbA1c group (3770 +/- 514 vs. 3215 +/- 610 g), no association was present between birth weight and HbA1c level (r = 0.22, p = 0.4). The rate of a mature pulmonic profile at term is not significantly different between IDDM women with good or poor glycemic control. HbA1c values should not be used to predict the presence or absence of amniotic fluid PG.