Compared with placebo, assess of the efficacy and safety of Guanxin Shutong capsule to treat chronic stable angina (syndrome of blood stasis resistance), and the result will be used for the basis of later Ⅳ clinical trial.
1\. Procedures 1.1 Start-up stage (-14\~0 Day) 1. Inquire medical history, medication use, accompanied treatment, etc; 2. Sign informed consent; 3. Measure vital signs and conduct physical examination; 4. Record symptom and signs; 5. Confirm inclusion/exclusion criteria, and put patients who meet inclusion criteria into start-up stage; 6. Record participators' history of angina pectoris and treatment, or select stable angina from outpatient service (without medicate); 7. Allocate screen number, hand out Guanxi Shutong Capsules Placebo and record card of angina/nitroglycerin used; 8. Advise patient return visit with an empty belly 2 weeks later. 1.2 Interview 1 (Baseline 0 Day) (1) Measure vital signs; (2)Accomplish all the examination items: Blood routines, Urine routines, Stool routines + Occult blood, Hepatorenal function (AST, ALT, TBIL, ALP, γ-GT, BUN, Cr), Four coagulation tests (TT, PT, APTT, FIB), Blood fat (TC, TG, HDL-C, LDL-C), 12 leads electrocardiogram, Seattle Angina Ques-tionnaire (SAQ). Additionally, premenopausal women receive urine pregnancy test; (3) Exercise treadmill testing (ETT): around am. 10:00 (Note: Just for the patients who need ETT); (4) Record symptoms and signs ( Score of syndrome of Chinese medicine and Score of angina); (5) Randomize and allocate drug number; (6) Hand out the drugs for 2 weeks and record card of angina/nitroglycerin used; (7) Advise patient return visit 2 weeks later. 1.3 Interview 2 (14±2 Day) 1. Inquire adverse events; 2. Inquire accompanied treatment and record combined medication. 3. Measure vital signs; 4. Record symptoms and signs (Score of syndrome of Chinese medicine and Score of angina); 5. Withdraw remained drugs and box, and record card; 6. Hand out the drugs for 2 weeks and record card of angina/nitroglycerin used; 7. Advise patient return visit 2 weeks later. 1.4 Interview 3 (28±2 Day) (1) Inquire adverse events; (2) Inquire accompanied treatment and record combined medication. (3) Measure vital signs; (4) Record symptoms and signs (Score of syndrome of Chinese medicine and Score of angina); (5) 12 leads electrocardiogram (6) Accomplish all the examination items: Blood routines, Urine routines, Stool routines + Occult blood, Hepatorenal function (AST, ALT, TBIL, ALP, γ-GT, BUN, Cr), Four coagulation tests (TT, PT, APTT, FIB), Blood fat (TC, TG, HDL-C, LDL-C), 12 leads electrocardiogram, Seattle Angina Ques-tionnaire (SAQ); (7) Exercise treadmill testing (ETT) (Note: Just for the patients who need ETT); (8) Withdraw remained drugs and box, and record card; (9) Assess compliance; (10) Summarize the clinical trial.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
300
3 capsules three times a day; Duration: 4 weeks. Number of Cycles: until progression or unacceptable toxicity develops.
3 capsules three times a day; Duration: 4 weeks.
Adults: 0.25mg-0.5mg (half pill or 1 pill) once, sub-lingual. One more pill per 5 minutes untill pain relief. If total dose is 3 pills in 15 minutes and the pain is still in, please seek medical advice urgently. The participators in both arms who have agina symptom will take Nitroglycerine. So the accumulated consumption of participators is the one of the maesuremnts.
The General Hospital of Shenyang Military Region
Shenyang, Liaoning, China
Therapeutic effect to Angina ( Average value of angina frequency)
Record angina frequency per week. Record date is Start-up Stage 1st week, Start-up Stage 2st week, Interview Stage 1st week, Interview Stage 2st week, Interview Stage 3st week and Interview Stage 4st week (Toal of 6 times).
Time frame: 6 weeks
Exercise treadmill testing (ETT)
ST-segment displacement in electrocardiogram: Observe ST-segment displacement of J point after 60ms, including the degree of ST-segment depression.
Time frame: 4 weeks
Usage of nitroglycerine per day (average value)
Time frame: 4 weeks
Seattle Angina Ques-tionnaire (SAQ)
Time frame: 4 weeks
Scores on Chinese medical syndrome scale
Primary symptom: Chest pains (0; Slight: 2; Moderate: 4; Severe: 6) Chest congestion (0; Slight: 2; Moderate: 4; Severe: 6) Secondary symptom: Palpitation (0; Slight: 1; Moderate: 2; Severe: 3) Shortness of breath (0; Slight: 1; Moderate: 2; Severe: 3) Insomnia (0; Slight: 1; Moderate: 2; Severe: 3)
Time frame: 4 weeks
Electrocardiogram manifestation
Compare the changes of electrocardiogram manifestation (such as ST segment, T wave) of angina before and after treatment.
Time frame: 4 weeks
Time of angina break out from exercise beginning in ETT
Time frame: 4 weeks
Time of ST below 1 mm from exercise beginning in ETT
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Time frame: 4 weeks