Process for determining drug taper schedules

• US 5,468,222 A
• Filed: 04/21/1993
• Issued: 11/21/1995
• Est. Priority Date: 05/03/1990
• Status: Expired due to Fees

• Current Assignee: Mayo Foundation For Medical Education And Research (Mayo Clinic)
• Original Assignee: Mayo Foundation For Medical Education And Research (Mayo Clinic)
• Inventors: Altchuler, Steven I.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Hazard, Jennifer L.
• Application Number:
  US08/025,890
• Time in Patent Office: 944 Days
• Field of Search: 364/413.02, 364/413.01, 604/131, 604/19, 604/97, 604/49, 128/DIG. 13
• US Class Current: 604/500
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
• CPC Class Codes: G16H 20/10 relating to drugs or medications, e.g. for ensuring correct administration to patients
• CPC Class Codes: G16H 40/20 for the management or administration of healthcare resources or facilities, e.g. managing hospital staff or surgery rooms

Abstract

Process for calculating decreasing doses of a drug a patient needs to take to be able to finally stop taking the drug algorithm. The process is based on an exponential drug taper. This is particularly useful for a drug which a patient is either physically or psychologically dependent, and for a drug where there are potentially serious side effects (for example, seizures) if the drug is rapidly discontinued. The program calculates the amount of drug and provides the clinician the opportunity to look at several different possible drug taper schedules, both numerically and graphically, and to aid the clinician in choosing the appropriate drug taper. The process can calculate a drug taper based upon actual clinical response of a patient. The process corrects for actual dosage sizes available, and calculates administration schedules for the patient and nurse.

Claims

1. A method of tapering a patient from a medicament, comprising:

a. predetermining the initial dose of said medicament as a first parameter;

b. predetermining at least one of the parameters selected from the group consisting of an intermediate dose of said medicament, the final dose of said medicament, the duration of said taper, and the percent decrement between said initial dose and said final dose as a second parameter;

c. calculating a tapering schedule in accordance with the algorithm

space="preserve" listing-type="equation">G(t)=Rnd[a,M]

wherein G(t) is the amount of said medicament given at time t, Rnd is a rounding function which rounds a to the nearest multiple of M;

a is K₁ k₂^t, wherein k₁ is the initial dose of said medicament, k₂ is said second parameter, and t is time, and M is the minimum dosage size available;

d. administering said medicament to said patient in a dosage amount in accordance with said calculated tapering schedule;

e. observing the clinical response of said patient to said administration;

f. modifying said dosage amount if said response indicates that said dosage amount is too high or too low, until the response of said patient to said modified dosage amount is stable;

g. recalculating a tapering schedule in accordance with the algorithm in part (c) using as said first parameter said initial dose and as said second parameter said modified dosage amount; and

,

h. administering said medicament to said patient in a dosage amount in accordance with said recalculated tapering schedule.