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| ID | Type | Description | Link |
|---|---|---|---|
| 1461 | Other Grant/Funding Number | Medtronic |
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| Name | Class |
|---|---|
| Medtronic | INDUSTRY |
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The purpose of this study is to determine the acute efficacy of intrathecal clonidine to reduce blood pressure in hypertensive subjects with poor blood pressure control and describe its effects on cardiovascular function.
Hypertension occurs commonly, is associated with major morbidity and mortality, and responds poorly to current therapies in a small minority of compliant patients. The goal of this investigator-initiated study is to determine whether intrathecal administration of clonidine reduces blood pressure in hypertensive patients, focusing on a group who often achieve inadequate blood pressure control with multiple drug therapy.
After consent, pts will be screened and if qualified brought into center and intrathecal injection of clonidine given. Patients will be closely monitored for 4 hours, while data is collected.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Intrathecal Clonidine | Experimental | Subject will receive one time Clonidine injection via lower lumber interspace. Clonidine (Duraclon), 100 μg/ml, 1.5 ml will be diluted to 2 ml with preservative free saline, and total of 150 μg will be delivered. Supine and sitting blood pressures and heart rate will be measured at 10 minute intervals until 60 minutes after clonidine administration, then at 15 minutes for next 3 hours. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| clonidine | Drug | Intrathecal Clonidine |
|
|
| Measure | Description | Time Frame |
|---|---|---|
| Change in Blood Pressure After Intrathecal Injection of Clonidine. | Subjects baseline blood pressure (systolic blood pressure (SBP), and diastolic blood pressure (DBP)), and blood pressures after clonidine injection was compared against baseline to assess efficacy of clonidine in refractory hypertensive subjects. Subject's blood pressure was monitored continuously after intrathecal injection of clonidine until subjects blood pressure nadir and return to pre clonidine injection level. The mean value reported below are the average changes in blood pressure from baseline (pre clonidine injection) in both SBP and DBP during post clonidine injection blood pressure monitoring for 4 hours. Blood pressure measurements were collected every 10 minutes for first hour after injection, and every 15 minutes after the first hour, up to 4 hours were averaged to report the change from baseline. | Baseline, Every 10 Minutes for first hour after clonidine injection, and every 15 minutes after first hour, until 4 hours after clonidine injection |
| Measure | Description | Time Frame |
|---|---|---|
| Likert Scale Pain Rating | Likert scale is 11 point digital pain rating system that asks subjects to rate their pain from 0 to 10. Rating of 0 means no pain at all, and in increasing order, 10 would mean worst pain imaginable/ unbearable pain. | Pre-dose and 1 hour post injection. |
| Changes in Visual Analogue Scale (VAS) Ratings of Sedation and Sensation of Dry Mouth Reported by the Subjects, Pre and 1 Hour Post Injection |
Not provided
Inclusion Criteria:
Exclusion Criteria:
Allergy to clonidine
Presently on clonidine orally or transdermally
Known or suspected correctable causes of secondary hypertension
Breast Feeding or Pregnant women
Unstable Ischemic Heart Disease
Unstable Angina
Intracoronary Stent Placement
Coronary bypass within last 6 months
Myocardial Infarction within last 6 months
Congestive Failure
Cardiac Arrhythmias
Known Cerebral Vascular Disease
Renal Disease
Evidence of Injection Site Infection
Known Bleeding Disorders
Hepatic Insufficiency
Renal Insufficiency
Participation in an investigational drug study within 30 day of enrollment
Prohibited Medications:
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| Name | Affiliation | Role |
|---|---|---|
| Richard L. Rauck, MD | Owner | Principal Investigator |
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| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 4884576 | Background | Onesti G, Schwartz AB, Kim KE, Swartz C, Brest AN. Pharmacodynamic effects of a new antihypertensive drug, Catapres (ST-155). Circulation. 1969 Feb;39(2):219-28. doi: 10.1161/01.cir.39.2.219. No abstract available. | |
| 870272 | Background | Davies DS, Wing AM, Reid JL, Neill DM, Tippett P, Dollery CT. Pharmacokinetics and concentration-effect relationships of intervenous and oral clonidine. Clin Pharmacol Ther. 1977 May;21(5):593-601. doi: 10.1002/cpt1977215593. |
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no individual's data will be shared with anyone other than the members of the study staff, and the confidentiality will be maintained in accordance with HIPAA rules.
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| ID | Title | Description |
|---|---|---|
| FG000 | Intrathecal Clonidine | Subject will receive one time Clonidine injection via lower lumber interspace. Clonidine (Duraclon), 100 μg/ml, 1.5 ml will be diluted to 2 ml with preservative free saline, and total of 150 μg will be delivered. Supine and sitting blood pressures and heart rate will be measured at 10 minute intervals until 60 minutes after clonidine administration, then at 15 minutes for next 3 hours. clonidine: Intrathecal Clonidine |
| Title | Milestones | Reasons Not Completed | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
|
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| ID | Title | Description |
|---|---|---|
| BG000 | Intrathecal Clonidine | All subjects met all inclusion and exclusionary criteria, and we report study subjects' demographic information in following sections. |
| Units | Counts |
|---|---|
| Participants |
|
| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Categorical | Count of Participants |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Change in Blood Pressure After Intrathecal Injection of Clonidine. | Subjects baseline blood pressure (systolic blood pressure (SBP), and diastolic blood pressure (DBP)), and blood pressures after clonidine injection was compared against baseline to assess efficacy of clonidine in refractory hypertensive subjects. Subject's blood pressure was monitored continuously after intrathecal injection of clonidine until subjects blood pressure nadir and return to pre clonidine injection level. The mean value reported below are the average changes in blood pressure from baseline (pre clonidine injection) in both SBP and DBP during post clonidine injection blood pressure monitoring for 4 hours. Blood pressure measurements were collected every 10 minutes for first hour after injection, and every 15 minutes after the first hour, up to 4 hours were averaged to report the change from baseline. | All subjects met inclusion and exclusionary criteria, and was given an intrathecal injection of clonidine. They were followed for changes in blood pressure for 4 hours. | Posted | Mean | Standard Deviation | mm Hg | Baseline, Every 10 Minutes for first hour after clonidine injection, and every 15 minutes after first hour, until 4 hours after clonidine injection |
Adverse events were collected during the duration of the study. Some adverse events, such as pregnancy that occurred during the study would have been followed until the delivery of fetus or termination of pregnancy.
Events such as spinal headaches, or hypotension requiring intravenous fluids or vasopressor intervention
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Intrathecal Clonidine | Subject will receive one time Clonidine injection via lower lumber interspace. Clonidine (Duraclon), 100 μg/ml, 1.5 ml will be diluted to 2 ml with preservative free saline, and total of 150 μg will be delivered. Supine and sitting blood pressures and heart rate will be measured at 10 minute intervals until 60 minutes after clonidine administration, then at 15 minutes for next 3 hours. clonidine: Intrathecal Clonidine |
Not provided
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This study was limited by small sample size, and lack of control group.
| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Medical Director | The Center for Clinical Research | 3367656181 | rrauck@ccrpain.com |
| ID | Term |
|---|---|
| D006973 | Hypertension |
| ID | Term |
|---|---|
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
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| ID | Term |
|---|---|
| D003000 | Clonidine |
| ID | Term |
|---|---|
| D048288 | Imidazolines |
| D007093 | Imidazoles |
| D001393 | Azoles |
| D006573 | Heterocyclic Compounds, 1-Ring |
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Subjects were asked to rate severity of two of the most common side effects of clonidine, sedation and sensation of dry mouth, at pre and post (1 hour after) intrathecal administration of clonidine. The mean changes between pre and post injection VAS ratings of sedation and sensation of dry mouth are reported below. The VAS scale ranges from 1 to 10 cm, with higher values indicating higher level of sedation and higher level of dry mouth. |
| Before clonidine injection (Baseline), and at 1 hour after clonidine injection. |
| 6734692 | Background | Frisk-Holmberg M, Paalzow L, Wibell L. Relationship between the cardiovascular effects and steady-state kinetics of clonidine in hypertension. Demonstration of a therapeutic window in man. Eur J Clin Pharmacol. 1984;26(3):309-13. doi: 10.1007/BF00548760. |
| 321174 | Background | Reid JL, Wing LM, Mathias CJ, Frankel HL, Neill E. The central hypotensive effect of clonidine. Studies in tetraplegic subjects. Clin Pharmacol Ther. 1977 Apr;21(4):375-81. doi: 10.1002/cpt1977214375. |
| 2414580 | Background | Brown MJ, Struthers AD, di Silvio L. Peripheral alpha 2 adrenoceptor stimulation contributes to the sympatholytic effect of guanfacine in humans. J Cardiovasc Pharmacol. 1985;7 Suppl 6:S159-61. doi: 10.1097/00005344-198500076-00027. |
| 6630584 | Background | Guthrie GP Jr, Kotchen TA. Effects of prazosin and clonidine on sympathetic and baroreflex function in patients with essential hypertension. J Clin Pharmacol. 1983 Aug-Sep;23(8-9):348-54. doi: 10.1002/j.1552-4604.1983.tb02747.x. |
| 2455165 | Background | Mohanty PK, Sowers JR, McNamara C, Thames MD. Reflex vasoconstrictor responses to cardiopulmonary baroreceptor unloading, head-up tilt, and cold pressor testing in elderly mild-to-moderate hypertensives: effect of clonidine. J Cardiovasc Pharmacol. 1987;10 Suppl 12:S135-7. |
| 1443738 | Background | Muzi M, Goff DR, Kampine JP, Roerig DL, Ebert TJ. Clonidine reduces sympathetic activity but maintains baroreflex responses in normotensive humans. Anesthesiology. 1992 Nov;77(5):864-71. doi: 10.1097/00000542-199211000-00005. |
| 3513726 | Background | Houston MC. Treatment of hypertensive emergencies and urgencies with oral clonidine loading and titration. A review. Arch Intern Med. 1986 Mar;146(3):586-9. |
| 6534750 | Background | Masotti G, Scarti L, Poggesi L, Bisi G, Gallini C, Neri Serneri GG. Changes in cardiac function after effective treatment of hypertensive emergencies with i.v. clonidine. Eur Heart J. 1984 Dec;5(12):1036-42. doi: 10.1093/oxfordjournals.eurheartj.a061605. |
| 632367 | Background | Niarchos AP. Evaluation of intravenous clonidine in hypertensive emergencies. J Clin Pharmacol. 1978 Apr;18(4):220-8. doi: 10.1002/j.1552-4604.1978.tb01596.x. |
| 2580157 | Background | Magorien RD, Hermiller JB, Unverferth DV, Leier CV. Regional hemodynamic effects of clonidine in congestive heart failure. J Cardiovasc Pharmacol. 1985 Jan-Feb;7(1):91-6. doi: 10.1097/00005344-198501000-00015. |
| 2429112 | Background | Zochowski RJ, Lada W. Intravenous clonidine treatment in acute myocardial infarction (with comparison to a nitroglycerin-treated and control group). J Cardiovasc Pharmacol. 1986;8 Suppl 3:S41-5. |
| 15277909 | Background | Wallace AW, Galindez D, Salahieh A, Layug EL, Lazo EA, Haratonik KA, Boisvert DM, Kardatzke D. Effect of clonidine on cardiovascular morbidity and mortality after noncardiac surgery. Anesthesiology. 2004 Aug;101(2):284-93. doi: 10.1097/00000542-200408000-00007. |
| 3341873 | Background | Byrd BF 3rd, Collins HW, Primm RK. Risk factors for severe bradycardia during oral clonidine therapy for hypertension. Arch Intern Med. 1988 Mar;148(3):729-33. |
| 578552 | Background | Kibler LE, Gazes PC. Effect of clonidine on atrioventricular conduction. JAMA. 1977 Oct 31;238(18):1930-2. |
| 6199612 | Background | Toussaint C, Cave D, Saoudi N, Moore N, Letac B. Electrophysiological effects of intravenous clonidine on sinus node function and conduction in man. J Cardiovasc Pharmacol. 1984 Jan-Feb;6(1):56-60. |
| 2429109 | Background | Clementy J, Castagne D, Wicker P, Dallocchio M, Bricaud H. Study of the electrophysiologic properties of clonidine administered intravenously. J Cardiovasc Pharmacol. 1986;8 Suppl 3:S24-9. doi: 10.1097/00005344-198608003-00007. |
| 8827948 | Background | Rupp H, Maisch B, Brilla CG. Drug withdrawal and rebound hypertension: differential action of the central antihypertensive drugs moxonidine and clonidine. Cardiovasc Drugs Ther. 1996 Jun;10 Suppl 1:251-62. doi: 10.1007/BF00120495. |
| 12106031 | Background | Fuxe K, Tinner B, Bjelke B, Agnati LF, Verhofstad A, Steinbusch HG, Goldstein M, Hersh L, Kalia M. Monoaminergic and Peptidergic Innervation of the Intermedio-Lateral Horn of the Spinal Cord. Eur J Neurosci. 1990;2(5):451-460. doi: 10.1111/j.1460-9568.1990.tb00436.x. |
| 12106030 | Background | Fuxe K, Tinner B, Bjelke B, Agnati LF, Verhofstad A, Steinbusch HG, Goldstein M, Kalia M. Monoaminergic and Peptidergic Innervation of the Intermedio-Lateral Horn of the Spinal Cord. Eur J Neurosci. 1990;2(5):430-450. doi: 10.1111/j.1460-9568.1990.tb00435.x. |
| 6324960 | Background | Unnerstall JR, Kopajtic TA, Kuhar MJ. Distribution of alpha 2 agonist binding sites in the rat and human central nervous system: analysis of some functional, anatomic correlates of the pharmacologic effects of clonidine and related adrenergic agents. Brain Res. 1984 Mar;319(1):69-101. doi: 10.1016/0165-0173(84)90030-4. |
| 6286903 | Background | Guyenet PG, Cabot JB. Inhibition of sympathetic preganglionic neurons by catecholamines and clonidine: mediation by an alpha-adrenergic receptor. J Neurosci. 1981 Aug;1(8):908-17. doi: 10.1523/JNEUROSCI.01-08-00908.1981. |
| 2795458 | Background | Stevens CW, Yaksh TL. Time course characteristics of tolerance development to continuously infused antinociceptive agents in rat spinal cord. J Pharmacol Exp Ther. 1989 Oct;251(1):216-23. |
| 1672580 | Background | Eisenach JC, Tong CY. Site of hemodynamic effects of intrathecal alpha 2-adrenergic agonists. Anesthesiology. 1991 Apr;74(4):766-71. doi: 10.1097/00000542-199104000-00021. |
| 1928792 | Background | De Kock M. Site of hemodynamic effects of alpha 2-adrenergic agonists. Anesthesiology. 1991 Oct;75(4):715-6. doi: 10.1097/00000542-199110000-00046. No abstract available. |
| 9728835 | Background | Eisenach JC, Hood DD, Curry R. Intrathecal, but not intravenous, clonidine reduces experimental thermal or capsaicin-induced pain and hyperalgesia in normal volunteers. Anesth Analg. 1998 Sep;87(3):591-6. doi: 10.1097/00000539-199809000-00018. |
| 2060125 | Background | Kooner JS, Birch R, Frankel HL, Peart WS, Mathias CJ. Hemodynamic and neurohormonal effects of clonidine in patients with preganglionic and postganglionic sympathetic lesions. Evidence for a central sympatholytic action. Circulation. 1991 Jul;84(1):75-83. doi: 10.1161/01.cir.84.1.75. |
| 2774269 | Background | Castro MI, Eisenach JC. Pharmacokinetics and dynamics of intravenous, intrathecal, and epidural clonidine in sheep. Anesthesiology. 1989 Sep;71(3):418-25. doi: 10.1097/00000542-198909000-00018. |
| 2817456 | Background | Eisenach JC, Lysak SZ, Viscomi CM. Epidural clonidine analgesia following surgery: phase I. Anesthesiology. 1989 Nov;71(5):640-6. doi: 10.1097/00000542-198911000-00003. |
| 2240674 | Background | Mendez R, Eisenach JC, Kashtan K. Epidural clonidine analgesia after cesarean section. Anesthesiology. 1990 Nov;73(5):848-52. doi: 10.1097/00000542-199011000-00009. |
| 1736694 | Background | Huntoon M, Eisenach JC, Boese P. Epidural clonidine after cesarean section. Appropriate dose and effect of prior local anesthetic. Anesthesiology. 1992 Feb;76(2):187-93. doi: 10.1097/00000542-199202000-00005. |
| 7639365 | Background | Eisenach JC, D'Angelo R, Taylor C, Hood DD. An isobolographic study of epidural clonidine and fentanyl after cesarean section. Anesth Analg. 1994 Aug;79(2):285-90. doi: 10.1213/00000539-199408000-00014. |
| 10443601 | Background | Chiari A, Lorber C, Eisenach JC, Wildling E, Krenn C, Zavrsky A, Kainz C, Germann P, Klimscha W. Analgesic and hemodynamic effects of intrathecal clonidine as the sole analgesic agent during first stage of labor: a dose-response study. Anesthesiology. 1999 Aug;91(2):388-96. doi: 10.1097/00000542-199908000-00012. |
| 10072008 | Background | D'Angelo R, Evans E, Dean LA, Gaver R, Eisenach JC. Spinal clonidine prolongs labor analgesia from spinal sufentanil and bupivacaine. Anesth Analg. 1999 Mar;88(3):573-6. doi: 10.1097/00000539-199903000-00020. |
| 8267190 | Background | Rauck RL, Eisenach JC, Jackson K, Young LD, Southern J. Epidural clonidine treatment for refractory reflex sympathetic dystrophy. Anesthesiology. 1993 Dec;79(6):1163-9; discussion 27A. |
| 2817457 | Background | Eisenach JC, Rauck RL, Buzzanell C, Lysak SZ. Epidural clonidine analgesia for intractable cancer pain: phase I. Anesthesiology. 1989 Nov;71(5):647-52. doi: 10.1097/00000542-198911000-00004. |
| 7478682 | Background | Eisenach JC, DuPen S, Dubois M, Miguel R, Allin D; Epidural Clonidine Study Group. Epidural clonidine analgesia for intractable cancer pain. The Epidural Clonidine Study Group. Pain. 1995 Jun;61(3):391-399. doi: 10.1016/0304-3959(94)00209-W. |
| 8439023 | Background | Eisenach J, Detweiler D, Hood D. Hemodynamic and analgesic actions of epidurally administered clonidine. Anesthesiology. 1993 Feb;78(2):277-87. doi: 10.1097/00000542-199302000-00011. |
| 7605017 | Background | Eisenach JC, Hood DD, Tuttle R, Shafer S, Smith T, Tong C. Computer-controlled epidural infusion to targeted cerebrospinal fluid concentrations in humans. Clonidine. Anesthesiology. 1995 Jul;83(1):33-47. doi: 10.1097/00000542-199507000-00005. |
| 8712447 | Background | Hood DD, Mallak KA, Eisenach JC, Tong C. Interaction between intrathecal neostigmine and epidural clonidine in human volunteers. Anesthesiology. 1996 Aug;85(2):315-25. doi: 10.1097/00000542-199608000-00013. |
| 9085961 | Background | De Kock M, Eisenach J, Tong C, Schmitz AL, Scholtes JL. Analgesic doses of intrathecal but not intravenous clonidine increase acetylcholine in cerebrospinal fluid in humans. Anesth Analg. 1997 Apr;84(4):800-3. doi: 10.1097/00000539-199704000-00019. |
| 10601673 | Background | Eisenach JC, Hood DD, Curry R. Relative potency of epidural to intrathecal clonidine differs between acute thermal pain and capsaicin-induced allodynia. Pain. 2000 Jan;84(1):57-64. doi: 10.1016/S0304-3959(99)00181-5. |
| 8853097 | Background | Eisenach JC, De Kock M, Klimscha W. alpha(2)-adrenergic agonists for regional anesthesia. A clinical review of clonidine (1984-1995). Anesthesiology. 1996 Sep;85(3):655-74. doi: 10.1097/00000542-199609000-00026. No abstract available. |
| 15281518 | Background | Baker A, Klimscha W, Eisenach JC, Li XH, Wildling E, Menth-Chiari WA, Chiari AI. Intrathecal clonidine for postoperative analgesia in elderly patients: the influence of baricity on hemodynamic and analgesic effects. Anesth Analg. 2004 Jul;99(1):128-134. doi: 10.1213/01.ANE.0000114549.17864.36. |
| 2008952 | Background | Nishikawa T, Kimura T, Taguchi N, Dohi S. Oral clonidine preanesthetic medication augments the pressor responses to intravenous ephedrine in awake or anesthetized patients. Anesthesiology. 1991 Apr;74(4):705-10. doi: 10.1097/00000542-199104000-00014. |
| 598422 | Background | Wing LM, Reid JL, Davies DS, Neill EA, Tippett P, Dollery CT. Pharmacokinetic and concentration-effect relationships of clonidine in essential hypertension. Eur J Clin Pharmacol. 1977 Dec 28;12(6):463-9. doi: 10.1007/BF00561067. |
| 15752933 | Background | Abdelhammed AI, Smith RD, Levy P, Smits GJ, Ferrario CM. Noninvasive hemodynamic profiles in hypertensive subjects. Am J Hypertens. 2005 Feb;18(2 Pt 2):51S-59S. doi: 10.1016/j.amjhyper.2004.11.043. |
| 15752930 | Background | Ferrario CM. New approaches to hypertension management: always reasonable but now necessary. Am J Hypertens. 2005 Feb;18(2 Pt 2):23S-25S. doi: 10.1016/j.amjhyper.2004.11.042. No abstract available. |
| 15199304 | Background | Adji A, O'Rourke MF. Determination of central aortic systolic and pulse pressure from the radial artery pressure waveform. Blood Press Monit. 2004 Jun;9(3):115-21. doi: 10.1097/01.mbp.0000132426.32886.e0. |
| 15076156 | Background | Lemogoum D, Flores G, Van den Abeele W, Ciarka A, Leeman M, Degaute JP, van de Borne P, Van Bortel L. Validity of pulse pressure and augmentation index as surrogate measures of arterial stiffness during beta-adrenergic stimulation. J Hypertens. 2004 Mar;22(3):511-7. doi: 10.1097/00004872-200403000-00013. |
| 11867037 | Background | al'Absi M, Devereux RB, Lewis CE, Kitzman DW, Rao DC, Hopkins P, Markovitz J, Arnett DK. Blood pressure responses to acute stress and left ventricular mass (The Hypertension Genetic Epidemiology Network Study). Am J Cardiol. 2002 Mar 1;89(5):536-40. doi: 10.1016/s0002-9149(01)02305-0. |
| 7856901 | Background | Hood DD, Eisenach JC, Tong C, Tommasi E, Yaksh TL. Cardiorespiratory and spinal cord blood flow effects of intrathecal neostigmine methylsulfate, clonidine, and their combination in sheep. Anesthesiology. 1995 Feb;82(2):428-35. doi: 10.1097/00000542-199502000-00013. |
| 7835532 | Background | Yaksh TL, Rathbun M, Jage J, Mirzai T, Grafe M, Hiles RA. Pharmacology and toxicology of chronically infused epidural clonidine.HCl in dogs. Fundam Appl Toxicol. 1994 Oct;23(3):319-35. doi: 10.1006/faat.1994.1112. |
| Participants |
|
| Age, Continuous | Mean | Standard Deviation | years |
|
| Sex: Female, Male | Count of Participants | Participants |
|
| Race/Ethnicity, Customized | Number | participants |
|
| Region of Enrollment | Number | participants |
|
| Duration of Hypertension Diagnosis | Mean | Full Range | years |
|
| Number of active antihypertensive medications | Number | participants |
|
| ID | Title | Description |
|---|---|---|
| OG000 | Intrathecal Clonidine | Subject received one time Clonidine injection via lower lumber interspace. Clonidine (Duraclon), 100 μg/ml, 1.5 ml will be diluted to 2 ml with preservative free saline, and total of 150 μg were delivered. Supine and sitting blood pressures and heart rate were measured at 10 minute intervals until 60 minutes after clonidine administration, then at 15 minutes for next 3 hours. |
|
|
| Secondary | Likert Scale Pain Rating | Likert scale is 11 point digital pain rating system that asks subjects to rate their pain from 0 to 10. Rating of 0 means no pain at all, and in increasing order, 10 would mean worst pain imaginable/ unbearable pain. | All subjects met inclusion and exclusionary criteria, and received intrathecal injection of clonidine. Subjects were asked to rate their baseline pain on Likert scale prior to receiving intrathecal clonidine injection, and 1 hour post intrathecal clonidine injection. | Posted | Mean | Standard Deviation | units on a scale | Pre-dose and 1 hour post injection. |
|
|
|
| Secondary | Changes in Visual Analogue Scale (VAS) Ratings of Sedation and Sensation of Dry Mouth Reported by the Subjects, Pre and 1 Hour Post Injection | Subjects were asked to rate severity of two of the most common side effects of clonidine, sedation and sensation of dry mouth, at pre and post (1 hour after) intrathecal administration of clonidine. The mean changes between pre and post injection VAS ratings of sedation and sensation of dry mouth are reported below. The VAS scale ranges from 1 to 10 cm, with higher values indicating higher level of sedation and higher level of dry mouth. | All qualified subjects were given intrathecal clonidine and were asked to rate level of sedation and sensation of dry mouth before clonidine injection (baseline) and 1 hour post injection on VAS scale. | Posted | Mean | Standard Deviation | cm | Before clonidine injection (Baseline), and at 1 hour after clonidine injection. |
|
|
|
| 0 |
| 10 |
| 0 |
| 10 |
Not provided
Not provided
| D006571 |
| Heterocyclic Compounds |