Metastatic bladder tumor from prostate cancer causing a ball valve-like obstruction in urination
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We report a rare case of prostate cancer that apparently metastasized to the bladder and formed a pedunculated mass that caused a ball valve-like obstruction in urination. A 57-year-old man with metastatic prostate cancer was referred to the emergency department for acute urinary retention. Cystoscopy and magnetic resonance imaging revealed a pedunculated mass measuring approximately 2 cm in size in the bladder neck that appeared to cause urinary obstruction in a ball valve-like manner. Transurethral resection of the bladder tumor was performed that resolved his symptom, and histopathological findings confirmed a diagnosis of poorly differentiated prostate adenocarcinoma.Keywords:
Urination
Urinary retention
To observe the acupuncture effect on urinary retention after spinal anesthesia.One hundred and fifty-four patients with spinal anesthesia were randomized into an observation group (80 cases) and a control group (74 cases). In the observation group, the electroacupuncture was applied to bilateral Fushe (SP 13) and Shuidao (ST 28); 2 Hz/50 Hz, retaining for 30 min. One treatment was required. In the control group, no any intervention was applied after operation. The incidence of the postoperative urinary retention, the time of the first automatic micturition since 30 min after spinal anesthesia, the volume of the first micturition, the postoperative urine condition, the lower abdominal distention, incomplete urination and the others were observed.The incidence of urinary retention in the observation group was lower than that in the control group; the first automatic micturition in 30 min after spinal anesthesia was earlier than that in the control group; the comfortable urination rate was higher than that in the control group; the incidence of incomplete urination and lower abdominal distention were lower than those in the control group. The differences were significant in comparison of the two groups (all P<0.05).Acupuncture apparently shortens the time of first automatic micturition after spinal anesthesia and promotes the recovery of bladder urinary reflection. This therapy acts on promoting urination and reducing postoperative urinary retention.
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Introduction Bladder cancer is the most common malignancy in elderly people and most bladder cancers are transitional cell carcinomas (TCC). Bladder pathology is usually investigated visually by cystoscopy and this technique can represent different conditions ranging from simple inflammation to flat CIS. However, biopsies must be taken from the suspected area to obtain diagnostic information. This is a relatively high cost procedure in terms of both time and money and is associated with discomfort for the patient and increased morbidity. Materials and Methods Electrical impedance spectroscopy (EIS), a minimally invasive screening technique, can be used to separate malignant areas from non-malignant areas in the urinary bladder. The feasibility of adapting this technique to screen bladder cancer, and abnormalities during cystoscopy has been explored and compared with histopathological evaluation of urinary bladder lesions. Both ex vivo and in vivo studies were carried out in this study. Results The impedance data were evaluated in both malignant and benign groups and a significant difference between these two groups was revealed. In all measurements, the impedivity of malignant bladder tissue was significantly higher than the benign tissue, especially at lower frequencies (p<0.001) Conclusion This technique can be a complimentary method for cystoscopy, biopsy, and histopathological evaluation of the bladder abnormalities.
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198 out of 5220 surgical patients were catheterized because of unexpected postoperative urinary retention. In 39% of cases micturition succeeded after the first catheterization of the overdistended bladder, but 61% (58% of the males and 66% of the females) developed more copolicated voided problems. The volume of fluids given intravenously during anaesthesia, the volume of primary urinary retention and increasing age were predisposing factors for prolonged micturition difficulties. Hospitalization was protracted because of postoperative urinary retention in 21 patients, and for 20 males prostatic surgery was necessary to relieve persistent retention.
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Objective purpose of observation of Kai Sai Lu retention enema treatment for benign prostatic hyperplasia urine retention results.Methods62 cases of benign prostatic hyperplasia patients in the use of traditional urine retention induced voiding invalid,using different doses(40,60,80 ml)Kai Sai Lu retention enema treatment,observation and defecation,urination time.Results62 cases of urinary retention of patients in 36 cases defecation,urination,and the total efficiency of 85.7% percent.60 ml group and 80 ml group was significantly higher than 10 ml,while the 60 ml and 80 ml group between the groups was not significant.ConclusionKai Sai Lu retention enema can promote urination,Kai Sai Lu amount in 60 ml~80 ml suitable.
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ABSTRACT Two different approaches were employed to examine the possible urine storage and ionoregulatory functions of the urinary bladder in vivo in the freshwater trout. An indirect approach, using non-catheterized fish, involved ‘spot sampling’ from the bladder to determine urine composition and measurement of PEG-4000 release into surrounding water to quantify urination events. The direct approach employed a new external catheterization technique to collect naturally discharged urine. Both methods demonstrated that trout urinate in intermittent bursts at 20–30 min intervals, and that natural urine flow rate is at least 20% lower and urinary Na+ and Cl− excretion rates at least 40 % lower than those determined by the traditional internal bladder catheter technique. The urine is stored for approximately 25 min prior to discharge, and significant ionic reabsorption via the bladder epithelium occurs during this period; a small residual volume is always likely to be retained. We conclude that previous studies using internal bladder catheterization have underestimated the ionoregulatory effectiveness of the entire renal system by preventing the function of the urinary bladder.
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Objective To explore the effects of nursing intervention on preventing postoperative urinary retention of patients undergoing sacral anesthesia for anorectal diseases.Methods One hundred and three cases in the experimental group were provided health education immediately after admission,including training patients how to urinate with t-bandage,controlling transfusion rate during and after operation,encouraging patients to urinate as early as possible after operation,and take measures to inducing urination in case of urinary retention.Routine nursing care was conducted in the control group.Results There was significant difference in the incidence of urinary retention and rate of inducing urination(P0.05).Conclusion Systematic nursing intervention could significantly reduce the incidence of postoperative urinary retention of patients underging sacral anesthesia for anorectal diseases.
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Introduction Bladder cancer is the most common malignancy in elderly people and most bladder cancers are transitional cell carcinomas (TCC). Bladder pathology is usually investigated visually by cystoscopy and this technique can represent different conditions ranging from simple inflammation to flat CIS. However, biopsies must be taken from the suspected area to obtain diagnostic information. This is a relatively high cost procedure in terms of both time and money and is associated with discomfort for the patient and increased morbidity. Materials and Methods Electrical impedance spectroscopy (EIS), a minimally invasive screening technique, can be used to separate malignant areas from non-malignant areas in the urinary bladder. The feasibility of adapting this technique to screen bladder cancer, and abnormalities during cystoscopy has been explored and compared with histopathological evaluation of urinary bladder lesions. Both ex vivo and in vivo studies were carried out in this study. Results The impedance data were evaluated in both malignant and benign groups and a significant difference between these two groups was revealed. In all measurements, the impedivity of malignant bladder tissue was significantly higher than the benign tissue, especially at lower frequencies (p<0.001) Conclusion This technique can be a complimentary method for cystoscopy, biopsy, and histopathological evaluation of the bladder abnormalities.
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The effect of capsaicin on micturition and associated reflexes was studied in urethan-anesthetized female rats. Capsaicin or vehicle solution were administered 4 days before the experiment in a dose of 125 mg/kg sc or during the experiment in a dose of 50-100 mg/kg sc. Activity of the urinary bladder was recorded by measuring intravesical pressure via a urethral catheter while slowly filling (0.052 ml/min) the bladder or when the bladder was distended beyond the micturition threshold and maintained at a constant volume. Pretreatment with capsaicin did not significantly change various parameters of urinary bladder function including micturition volume threshold or the amplitude, duration, and interval between reflex bladder contractions. However, capsaicin pretreatment significantly reduced (80% decrease) the arterial pressor responses accompanying reflex bladder contractions and reduced by approximately one-half the percentage of animals in which bladder activity was inhibited by stimulation of the uterine cervix. A large dose of capsaicin (50 mg/kg sc) elicited an acute block of bladder activity that persisted for 8-15 h. This effect is attributable to an action on myelinated afferent or efferent components of the micturition reflex pathway. It is concluded that capsaicin-sensitive afferents are not essential for the performance of micturition in the rat. However, these afferents are involved in cervicovesical reflex mechanisms that modulate bladder activity and in vascular reflexes triggered by isometric bladder contractions.
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