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  • Title: Long catheter sign: a reliable bedside sign of incorrect positioning of foley catheter in male spinal cord injury patients.
    Author: Vaidyanathan S, Hughes PL, Oo T, Soni BM.
    Journal: Cases J; 2008 Jul 17; 1(1):43. PubMed ID: 18637181.
    Abstract:
    INTRODUCTION: Indwelling urethral catheter is often used in male spinal cord injury patients to provide drainage to neuropathic bladder. If the balloon of a Foley catheter is inflated in urethra or, when a properly inserted Foley catheter is later pulled and thereby, the Foley balloon comes to lie in urethra, an excessive length of catheter will remain outside the penis. This sign is termed "long catheter sign". Long catheter sign will also be positive when Foley catheter slips out of urinary bladder in situations where Foley balloon is ruptured by a spiky vesical calculus or deflated due to a defective valve. CASE PRESENTATION: A fifty-year-old Caucasian male with paraplegia at T-5 level had been managing neuropathic bladder by long-term indwelling urethral catheter. During his stay in spinal unit, the patient felt that there had been a tug on the drainage tube when he was being turned during night as part of the routine care for relief of pressure. Next morning, a health professional noticed that a long segment of catheter was lying outside penis. There was no bleeding from urethral meatus. Catheter continued to drain urine, which was yellowish in colour. Urine output was satisfactory. This patient did not develop any clinical feature of autonomic dysreflexia nor was he feeling unwell. In view of positive long catheter sign, radiological studies were performed to check the position of Foley catheter, which confirmed the clinical impression of incorrectly positioned Foley catheter. The catheter was removed; flexible cystoscopy was performed. A 16 Fr, 20 ml balloon Foley catheter was inserted over a 0.032" guide wire. Following this procedure, a considerably shorter length of Foley catheter remained outside the penis. CONCLUSION: Positive long catheter sign indicates that the Foley catheter is placed incorrectly and needs repositioning urgently. Prompt recognition of long catheter sign and immediate repositioning of Foley catheter will help to prevent complications such as chronic distension of urinary bladder, urine infection, and pressure necrosis of urethra especially if Foley balloon remains inflated within urethra for a long period. In this patient, use of a Foley catheter with 20 ml balloon, and securing the drainage tube to thigh with two straps, helped to prevent inadvertent pull of Foley balloon into the urethra.
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