Medicaments may be introduced into the rectum for one of three purposes: for systemic action, for local medication, and for exciting evacuation. As the function of the rectum is expulsion rather than retention, it is obvious that ordinarily speci[ill]l measures have to be employed to secure local medication of the colon (endocolonic action) or systemic medication by the colon (diacolonic action). There are, however, certain persons—those suffering from torpor recti (dyschezia of Hertz)—whose lower bowel is extraordinarily insensitive and retentive. In these, exciting evacuation may be more difficult than securing retention. With certain other patients the rectum is excessively irritable, as in various forms of proctitis, in which it may be very difficult to have medicaments retained. Hence it is a good rule to make a digital examination of the rectum before resorting to rectal medication. In this manner, excessive irritability that would require unusual care to secure
FANTUS B. THE TECHNIC OF MEDICATION: A SERIES OF ARTICLES ON THE METHODS OF PRESCRIBING AND PREPARING, THE INDICATIONS FOR, AND THE USES OF VARIOUS MEDICAMENTS. JAMA. 1926;86(23):1767–1769. doi:10.1001/jama.1926.26720490002013
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