An evaluation of bladder emptying methods and the effect of demographic and clinical factors on spontaneous voiding frequency in stroke patients.

In this study, the bladder emptying methods at different stages of the post-stroke period along with the effects of demographic and clinical parameters on spontaneous voiding frequency were investigated. The frequencies of bladder emptying methods at admission to the rehabilitation clinic, after neurourological and urodynamic assessment and at home after discharge were spontaneous voiding (SV) 51/99 (51.5 %), 62/99 (62.6 %), 73/99 (73.7 %), emptying without a urinary catheter + an external collector system (EWUC + ECS) 24/99 (24.2 %), 18/99 (18.2 %), 17/99 (17.2 %), intermittent catheterization (IC) 1/99 (1.0 %), 15/99 (15.2 %), 6/99 (6.1 %), indwelling urethral catheter (IUC) 23/99 (23.2 %), 4/99 (4.0 %) and 3/99 (3.0 %), respectively. Lower spontaneous voiding frequencies were observed in single-divorced and geriatric individuals (p < 0.05). The number of patients who modified the method at home was 2/62 for SV, 5/18 for EWUC + ECS, 9/15 for IC, and 2/4 for IUC. The majority of stroke patients were able to void spontaneously and the spontaneous voiding frequency increased at follow-up. The spontaneous voiding frequency was low in geriatric and single-divorced subgroups. The method in which the most changes occurred was IC.

Contribution of 99mTc-sestamibi infusion SPECT to the characterization of fixed perfusion defects.

In patients with coronary artery disease, the distinction between scar and viable myocardium by means of myocardial perfusion imaging (MPI) sometimes can be difficult because of the equivocal meaning of fixed perfusion defects. In this study we examined whether addition of a 99mTc-sestamibi infusion study to the standard MPI could provide extra information regarding the fixed defects. Thirty-seven patients underwent standard MPI and an extra SPECT study in which 99mTc-sestamibi was given as a prolonged constant infusion. Of 324 myocardial segments available for analysis, 134 had fixed or resting perfusion abnormalities on standard MPI studies, of which 25% (33/134) in 12 patients showed partial improvement in the perfusion pattern whereas in 6% (8/134) the improvement was very significant in infusion studies. In 19 patients who were also examined with dobutamine echocardiography, 13 showed concordance between echocardiography and infusion MPI. This study suggests that infusion MPI may provide complementary information to the conventional scintigraphy with regard to interpretation of standard myocardial perfusion scans with fixed defects.