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Veves A, Webster L, Chen TF, Payne S, Boulton AJ. Aetiopathogenesis and management of impotence in diabetic males: four years experience from a combined clinic. Diabet Med 1995; 12:77-82. [PMID: 7712710 DOI: 10.1111/j.1464-5491.1995.tb02067.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The contribution of organic and psychogenic factors in the aetiopathogenesis of impotence was studied in a large number of diabetic males, to develop an algorithm for its management. We examined 110 consecutive patients who were referred to the Impotence Clinic of the Diabetes Centre. All patients were initially evaluated by a diabetologist and then underwent psychosexual assessment by a specialized psychiatrist. Patients with primarily organic disease were referred to a urologist for further management while those with psychogenic impotence received psychosexual counselling. Peripheral neuropathy was present in 71 (65%) and two or more autonomic tests were abnormal in 22 (20%) patients. Neuropathy was the only cause detected in 29 (27%) patients, the main cause in 22 (20%), and contributing, but not the main factor, in 20 (18%). Psychogenic factors were the only cause detected in 12 (11%) patients, the main cause in 26 (24%) and contributed in 19 (17%). Marital disharmony, medical treatment, and peripheral vascular disease were the main aetiopathogenic factors in the remaining cases. Psychosexual counselling resulted in successful intercourse in 17 (60%) out of the 24 treated patients and papaverine injections in 31 (61%) out of 56 treated patients. It is concluded that although organic factors are mainly responsible for the development of impotence in diabetic males, psychological factors contribute significantly and psychosexual assessment and counselling are essential adjuncts to its management. Treatment with papaverine injections is generally inexpensive and effective to overcome the multifactorial causes of erectile dysfunction in this population. An algorithm which may facilitate the investigation and treatment of impotent diabetic males is proposed.
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Chen TF, Clarke N, Bowman R, Harper NJ, Payne SR. Intermuscular bupivacaine infusion for control of pain after renal surgery: a preliminary report. BRITISH JOURNAL OF UROLOGY 1994; 74:155-9. [PMID: 7921931 DOI: 10.1111/j.1464-410x.1994.tb16578.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVE To assess the value of continuous bupivacaine wound infusion for post-operative pain relief after renal surgery. PATIENTS AND METHODS The analgesic efficacy of continuous intermuscular wound infusion with 0.25% bupivacaine was studied in 10 patients (four men, six women), with a mean age of 47.5 years (range 25-71) and a mean weight of 71.2 kg (range 44-99), after renal surgery in a single-blind randomized trial. The results were compared with those of an age- and weight-matched control group of 10 patients (five men, five women) with a mean age of 47.7 years (range 27-73) and a mean weight of 67.3 kg (range 51-85). Post-operative pain was studied objectively by assessing individual patient's morphine requirements administered via a patient controlled analgesia system, and subjectively with pain scores. Patient mobility was assessed by ward nursing staff using mobility score charts. RESULTS There was a lower demand for post-operative analgesia in the bupivacaine group compared with the control. Although there was no significant difference in the pain scores between the two groups, the bupivacaine group was significantly more mobile than the control group after surgery. There was no significant difference in the mean post-operative hospital stay between the two groups. CONCLUSION Continuous intermuscular bupivacaine wound infusion is a simple and safe procedure which lowers the patients' post-operative analgesic requirements, allows for earlier mobility and may promote more rapid discharge from hospital.
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Chen TF, Collier DS. Intraperitoneal rupture of an infected urachus. BRITISH JOURNAL OF UROLOGY 1994; 74:134-5. [PMID: 8044521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Chen TF, Robinson E, Payne SR, Robinson E. A district urinary catheter policy. Why have one? Ann R Coll Surg Engl 1994; 76:190-3. [PMID: 8017814 PMCID: PMC2502286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
A catheter audit was performed at the Central Manchester Trust, which found that there was excessive ordering, inappropriate catheter selection by size, materials, balloon size and poor guidelines on catheter storage. From these findings and from the available literature, we have proposed guidelines on catheter selection with the aim of offering the best patient care and to provide cost efficiency which may be of benefit to other hospitals.
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Chen TF, Doyle PT, Ferguson DR. Inhibition in the human urinary bladder by gamma-amino-butyric acid. BRITISH JOURNAL OF UROLOGY 1994; 73:250-5. [PMID: 8162501 DOI: 10.1111/j.1464-410x.1994.tb07513.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVE To investigate the effects of gamma-amino-butyric acid (GABA) on detrusor activity in man to determine whether it has any inhibitory effect on detrusor contraction. The inhibitory neurotransmitter GABA has been found in mammalian urinary bladders and the effects of GABA on detrusor activity in the rabbit bladder has previously been described [1]. MATERIALS AND METHODS Human detrusor muscle strips, obtained at cystectomy, were made to contract by electrical stimulation of their autonomic nerves or by the addition of carbachol in a superfusion apparatus. GABA and its analogues were added to the superfusion chamber and any changes in the responses were measured. RESULTS The electrically evoked nerve-mediated contractions in human bladder muscle were exclusively cholinergic. GABA inhibited nerve-mediated contractions in human detrusor muscle-strips by the activation of the GABAB receptor, since baclofen (a GABAB receptor agonist) produced similar inhibition and muscimol (a GABAA receptor agonist) did not. There was no inhibition of carbachol-mediated contractions by GABA. CONCLUSION This in vitro study shows that GABA has a peripherally mediated inhibitory effect on excitatory neurotransmission in human detrusor muscle. The site of action is on the post-ganglionic nerves and appears to be mediated via the GABAB receptor.
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Chen TF, Eardley I, Doyle PT, Bullock KN. Rectal obstruction secondary to carcinoma of the prostate treated by transanal resection of the prostate. BRITISH JOURNAL OF UROLOGY 1992; 70:643-7. [PMID: 1283104 DOI: 10.1111/j.1464-410x.1992.tb15835.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Rectal obstruction caused by carcinoma of the prostate is uncommon. If the disease does not respond to either hormonal treatment or radiotherapy, the only surgical means of relieving the obstruction has been the formation of a colostomy. We present an alternative treatment, since many of these patients are elderly with a short life expectancy and they may have difficulty coping with a stoma. Seven transanal endoscopic resections of the prostate (TARP) have been performed on 5 patients. The procedure is not without complications, but it does offer simple surgical palliation of the rectal obstruction and obviates the need for a colostomy.
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Chen TF, Molyneux AJ, Doyle PT. "Interstitial ureteritis": a rare cause of bilateral hydronephrosis. BRITISH JOURNAL OF UROLOGY 1992; 70:691-3. [PMID: 1486404 DOI: 10.1111/j.1464-410x.1992.tb15850.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Chen TF, Yu H, Barofsky DF. Centrifugal size-exclusion chromatographic method for rapid desalting and filtering of carbohydrate samples prior to fast atom bombardment mass spectrometry. Anal Chem 1992; 64:2014-9. [PMID: 1384389 DOI: 10.1021/ac00041a046] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Chen TF, Doyle PT, Ferguson DR. Inhibitory role of gamma-amino-butyric acid in the rabbit urinary bladder. BRITISH JOURNAL OF UROLOGY 1992; 69:12-6. [PMID: 1310630 DOI: 10.1111/j.1464-410x.1992.tb15449.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Gamma-amino-butyric acid (GABA) is an established inhibitory neurotransmitter in the central nervous system (CNS) and it has also been identified in the bladder. We have investigated in the rabbit the effect of GABA on detrusor activity. Rabbit detrusor muscle strips were made to contract by electrical stimulation of their autonomic nerves or by the addition of carbachol. The addition of GABA caused substantial inhibition of muscle contraction. GABA acts on 2 classes of receptors-GABAA and GABAB. The inhibition was mediated via the GABAB receptors as its effect was mimicked by baclofen (a GABAB agonist) and inhibited by 2-hydroxysaclofen (a GABAB receptor antagonist). Inhibition was not prevented by bicuculline (a GABAA receptor antagonist). This inhibition may be due to a direct muscle effect since the inhibition, which occurred with carbachol-induced contraction, was not abolished by the addition of tetrodotoxin. GABA, acting via the GABAB receptor, produces substantial inhibition of muscle contraction in the rabbit urinary bladder. This raises the possibility of using GABAB analogues in the treatment of detrusor instability.
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Kuo MJ, Tseng YZ, Chen TF, Fong DE. Verapamil overdose and severe hypocalcemia. JOURNAL OF TOXICOLOGY. CLINICAL TOXICOLOGY 1992; 30:309-11. [PMID: 1588680 DOI: 10.3109/15563659209038642] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Abstract
Fifteen epididymectomies were performed on 10 patients with post-vasectomy pain and 12 specimens were available for histopathological review. The findings were compared with those in 2 groups in which epididymectomy was performed for chronic epididymo-orchitis and epididymal cysts. The results showed that 50% of the post-vasectomy group were cured by simple epididymectomy. Pathological findings revealed features of long-standing obstruction and interstitial and perineural fibrosis which may have accounted for the pain. It is important to recognise this late complication of vasectomy and, if surgery is to be performed, to include all of the distal vas and previous vasectomy site in the excision.
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Chen TF, Collier DS. Intraperitoneal rupture of an infected urachal cyst in an infant. Case report. THE EUROPEAN JOURNAL OF SURGERY = ACTA CHIRURGICA 1991; 157:67-8. [PMID: 1675885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Peritonitis due to intraperitoneal rupture of an infected urachal cyst is a life-threatening condition, not previously reported in an infant. We report this condition in an 8-month-old infant. The child underwent complete excision of the urachal remnant and made an uneventful recovery; bacterial culture grew Staphylococcus aureus. Subsequent investigations did not reveal any other renal tract abnormalities.
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Chen TF, Collier DS, Everett WG, Freeman AH. Occult blood loss from small bowel tumours. Case report. ACTA CHIRURGICA SCANDINAVICA 1990; 156:499-501. [PMID: 2368555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report 4 patients who presented with occult blood loss, from a small bowel adenocarcinoma, in whom there was considerable delay in diagnosis. The difficulty in diagnosis and the role of CT scanning is discussed. We recommend a careful laparotomy when endoscopic and radiological investigations fail to reveal the source of blood loss.
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Abstract
Benign neoplasms of the trachea are rare. We describe a 46-year-old patient with a lipoma arising from the membranous trachea and causing severe respiratory obstruction. Investigation and management of this problem are discussed, and the literature is reviewed.
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Chen TF, Lin SG, Chen LX, Jiang GF, Liang ZY, Yang M, Qian YZ, Xie YA. [Enhancement of absorption of tetramethylpyrazine by synthetic borneol]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1990; 11:42-4. [PMID: 2403013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Sprague-Dawley rats were given ig tetramethylpyrazine phosphate (TMP) 5 mg/kg with or without previous borneol 5 mg/kg. The plasma TMP concentrations were analysed by GC method, and the data were treated by NONLIN program. The Cmax were 931 and 562 ng/ml, respectively, (P less than 0.01); while the AUC were 68,849 and 37,174, respectively, (P less than 0.05). It is suggested that the borneol enhances the absorption of the TMP but not in elimination.
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Lin SY, Tyan IJ, Chen TF, Chou YL. [A case report and metallurgical analysis of broken Luque rod]. GAOXIONG YI XUE KE XUE ZA ZHI = THE KAOHSIUNG JOURNAL OF MEDICAL SCIENCES 1989; 5:642-8. [PMID: 2634119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Wire breakage is frequently mentioned in Luque rod instrumentation with segmental sublaminar wiring, but breakage of the Luque rod is rare. A case report of a broken Luque rod in a patient following a scoliosis post-corrective operation is presented and a metallurgical analysis is provided to evaluate the mechanism of breakage. In the metallurgical analysis, we find many slots and dimples on the rod surface which were induced by an inappropriate bending apparatus and bending manipulation. These defects resulted in a stress concentration effect and initiated fatigue. As for the stress on the rod, this resulted from the force correcting the scoliotic deformity plus the load resulting from patient's daily activity, which increased the progression of fatigue and then induced the final breakage. So, to avoid Luque rod breakage we suggest that the bending manipulation be done appropriately, with external orthosis given to those patients with severe deformity or who are daily very active.
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Wang TH, Chen TF, Barofsky DF. Mass spectrometry of L-beta-aspartamido carbohydrates isolated from ovalbumin. BIOMEDICAL & ENVIRONMENTAL MASS SPECTROMETRY 1988; 16:335-8. [PMID: 3242689 DOI: 10.1002/bms.1200160165] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Using ovalbumin as a starting material, we have isolated and purified relatively large stocks of known glycopeptides for use as models with which to investigate and develop mass spectrometric procedures for the analysis of this class of compounds. In the process, we have discovered six new components in the L-beta-aspartamido carbohydrate fraction of ovalbumin. Positive and negative fast atom bombardment mass spectra, produced on a KRATOS MS50-TC, confirm that the newly found chromatographic peaks correspond to as yet unidentified compounds in the molecular weight range of 1000-3000. Fragment ion peaks present in the mass spectra of some of the unknown compounds can be rationalized in terms of the fragment ion patterns established from the structures of the known glycoasparagines.
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Chen TF. [Suicide and the university student - a population at risk]. HU LI ZA ZHI THE JOURNAL OF NURSING 1980; 27:37-9. [PMID: 6901764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Chen TF. [Self concept and the teaching of clinical nursing]. HU LI ZA ZHI THE JOURNAL OF NURSING 1979; 26:1-5. [PMID: 259622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Lacko AG, Chen TF. Enzyme purification by affinity chromatography using a non-covalently bound adsorbent. J Chromatogr A 1977; 130:446-50. [PMID: 853092 DOI: 10.1016/s0021-9673(00)89845-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Chen TF. [How to teach the nursing care of the asthmatic patient: by evaluating the teaching in medical-surgical nursing (Part II) (author's transl)]. HU LI ZA ZHI THE JOURNAL OF NURSING 1974; 21:34-9. [PMID: 4497882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Chen TF. [How to teach nursing care of the asthmatic patient: by evaluating the teaching in medical surgical nursing. 1]. HU LI ZA ZHI THE JOURNAL OF NURSING 1974; 21:55-66. [PMID: 4497872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Tsui G, Chen TF. [The relationship of acupuncture, moxibustion and nursing care]. HU LI ZA ZHI THE JOURNAL OF NURSING 1973; 20:45-8. [PMID: 4492266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Chang CC, Chen TF, Chuang ST. Influence of chronic neostigmine treatment on the number of acetylcholine receptors and the release of acetylcholine from the rat diaphragm. J Physiol 1973; 230:613-8. [PMID: 4352107 PMCID: PMC1350618 DOI: 10.1113/jphysiol.1973.sp010207] [Citation(s) in RCA: 84] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
1. Rats were treated twice daily for 7 days with neostigmine and the diaphragm was isolated for study of its acetylcholine content, release upon nerve stimulation and the number of receptors in the end-plate.2. While the content of total acetylcholine was unchanged, the release of acetylcholine on stimulation with trains of 500 pulses at 100 Hz every 20 sec was reduced by about 50%. Five days after the end of neostigmine treatment the release of acetylcholine recovered to normal.3. The total number of acetylcholine receptors in the end-plate as measured from the binding of N, O-di[(3)H]acetyl alpha-bungarotoxin was reduced from 2.1 x 10(7) to 1.2 x 10(7) per end-plate.4. The above-mentioned changes are not due to acute pharmacological effects of neostigmine, nor to an immediate effect of cholinesterase inhibition but presumably due to chronic accumulation of acetylcholine at the neuromuscular junction.
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Chen TF. [Nursing care for Mrs. Lin]. HU LI ZA ZHI THE JOURNAL OF NURSING 1973; 20:8-10. [PMID: 4489369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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