References: Laxative
Dis Colon Rectum. 1993 Jan;36(1):35-42.
Fecoflowmetry: a new parameter assessing rectal function in normal and constipated subjects.
Shafik A, Abdel-Moneim K.
Department of Surgery, Faculty of Medicine, Cairo University, Egypt.
Fecoflowmetry is a new technique by which the fecal flow rate is studied through recorded curves representing the changes that occur in the flow against time. Fecal flow rate is the product of rectal detrusor action against outlet resistance. The technique was performed on 36 normal volunteers and 88 chronically constipated patients. Simultaneous recording of the fecal flow rate and intra-abdominal and rectal neck pressures were performed. A water or paste enema was given to the individual. Upon feeling the desire to defecate, he or she was placed on a fecoflowmeter commode and was asked to defecate. Evaluation of the obtained defecation flow curve comprises the reporting on the defecated volume, flow time, mean and maximum flow rates, time to maximum flow, and shape of the curve. In the 88 constipated patients, two fecoflowmetric patterns were recognized: nonobstructive (inertia) and obstructive. They differ from each other in parameters and curve configuration. The defecated volume as well as mean and maximum flow rates were lower in outlet obstruction than in the inertia type, whereas flow time and time to maximum flow were longer. The ascending limb in the obstructive-type curve rose less steeply than in inertia; the curve had a long plateau, and the descending limb sloped more gradually. To conclude, fecoflowmetric studies could differentiate between defecation of normal and constipated subjects, and in the latter between the obstructive and inertia types of constipation. The technique was developed to simulate natural defecation. It provides quantitative and qualitative data concerning the defecation act. The technique is simple, easy, noninvasive, and nonradiologic. It can be used as a screening tool in defecation disorders.
Laxative online source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=8416777&dopt=Abstract constipation laxative [PubMed - inde
Dis Colon Rectum. 1993 Feb;36(2):139-45.
Evaluation and treatment of chronic intractable rectal pain--a frustrating endeavor.
Ger GC, Wexner SD, Jorge JM, Lee E, Amaranath LA, Heymen S, Nogueras JJ, Jagelman DG.
Department of Colorectal Surgery, Cleveland Clinic Florida, Fort Lauderdale, Florida 33309.
A study was undertaken to assess the evaluation and treatment of chronic intractable rectal pain. Sixty consecutive patients, 23 males and 37 females with a mean age of 69 (range, 29-87) years and a mean length of symptoms of 4.5 years, were evaluated by questionnaire, office examination, anal manometry, electromyography, cinedefecography, and pudendal nerve study. In all cases, organic abdominopelvic and anorectal etiologies for the pain were excluded by extensive radiologic and endoscopic evaluation. All patients had failed conservative and medical therapy. Ninety-five percent of patients had one or more associated factors: constipation or dyschezia (57 percent), prior pelvic surgery (43 percent), prior anal surgery (32 percent), prior spinal surgery (8 percent), irritable bowel syndrome (10 percent), or psychiatric disorders (depression or anxiety; 25 percent). Possible etiologies for the pain included levator spasm or anismus in 62 percent, coccygodynia in 8 percent, and pudendal neuropathy in 24 percent of patients. Therapy for pain control included electrogalvanic stimulation (EGS) in 29, biofeedback (BF) in 14, and steroid caudal block (SCB) in 11 patients. Pain control was assessed by an independent observer at a mean of 15 (range, 2-36) months after completion of therapy. Continued successful pain relief was classified by patients as good or excellent after EGS in 38 percent, after BF in 43 percent, and after SCB in 18 percent; overall success was reported by 47 percent of patients. The presence of levator spasm, coccygodynia, or pudendal neuropathy did not influence outcome. The routine use of physiologic investigation of rectal pain may not be justifiable. Moreover, more than half o
Langenbecks Arch Chir. 1993;378(1):49-59.
[Acquired disorders of peritoneal cavity muscles. Abdominal wall denervation in pregnancy, denervation incontinence, and continent and incontinent constipation]
[Article in German]
Stelzner F, Beyenburg S, Hahn N.
Zentrum fur Chirurigie, Chirurgische Universitatsklinik, Bonn-Venusberg.
The peritoneal cavity has a fascial skeleton that is kept under tension by permanent variable resting tone maintained by the abdominal muscles. The lateral abdominal muscles, the diaphragm and the pelvic floor are all components of this fasciomuscular support system. Voluntary and reflective changes in muscle tension allow the entry and exit of matter into and out of the spherical abdominal cavity by opening and closing of specialized wall segments called sphincters. We have previously demonstrated the existence of a resting tone in the tail muscles of mammals from which the human pelvic floor muscles are derived. The pelvic floor and its integrated sphincters form the anorectal organ of continence. This organ is much weaker in females than in males. The spinal centers that govern continence, contain in the female significantly fewer ganglion cells than the corresponding centers in the male. Childbirth and a commonly found tendency to develop constipation are additional stressors for the congenitally weaker female organ of continence. We explain in this paper why the abdominal wall and the pelvic floor may suffer stretch-induced denervation injuries during pregnancy and delivery. Such damage may persist in later life and can give rise to incontinence and "flabby abdomen". Based on our work in this field, we found a new differentiation between continent and incontinent constipation. Continent constipation is caused by spasticity of the pelvic floor characterized by abnormally high sphincter activity. This spastic pelvic floor syndrome can be treated successfully by psychotherapeutic techniques. Incontinent constipation, in contrast, is always associated
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