Predictive Factors for Hypotensive Bradycardic Events During Arthroscopic Shoulder Surgery
- Conditions
- Syncope, Vasovagal
- Interventions
- Other: Interscalene brachial plexus block
- Registration Number
- NCT01926561
- Lead Sponsor
- Daegu Catholic University Medical Center
- Brief Summary
Patients's demographics and perioperative factors affect the occurrence of hypotensive bradycardic events in the patients undergoing arthroscopic shoulder surgery in the sitting position under interscalene block.
- Detailed Description
Patients' age, Side of the block,Horner's syndrome, the degree of blockade, preoperative fasting time and fluid administration volume, waiting time for sitting position after the block, intraoperative use of opioids and antihypertensives, and change of heart rate variability before the block and after sitting position affect the occurrence of hypotensive bradycardic events in the patients undergoing arthroscopic shoulder surgery in the sitting position under interscalene block.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 68
- Age between 15 and 80 years
- American Society of Anesthesiologists physical status I-II
- Body mass index < 35 kg/m2
- Coagulation deficiencies
- Known allergies to local anesthetics
- Neurologic deficit on the side to be operated
- Inflammation at the puncture site for interscalene brachial plexus block
- Coronary artery disease
- Cardiac conduction disorders and arrhythmias
- Congestive heart disease
- Diabetes mellitus
- Serum electrolyte abnormalities
- Autonomic dysfunction
- Psychiatric disorders
- Patients refusal
- Communications difficulties
- Failure of interscalene brachial plexus block
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Arm && Interventions
Group Intervention Description Hypotensive bradycardic event Interscalene brachial plexus block The participants are assigned to hypotensive bradycardic event (HBE) group when they experience signs or symptoms associated with syncope, hypotension, or bradycardia, which are treated with vasopressors or inotropics following sitting position after interscalene brachial plexus block is done. Otherwise, they are assigned to non-HBE group.
- Primary Outcome Measures
Name Time Method Patient's age and gender, fasting time, administered volume, blood pressure, and heart rate variability Prior to ISBPB Patients'age and gender, preoperative fasting time and volume of fluid administered, pre-block mean arterial pressure and heart rate, logarithmically transformed low frequency, high frequency, and total power of heart rate variability
- Secondary Outcome Measures
Name Time Method Side of the block, volume of local anesthetics used, number of patients having Horner's syndrome, hoarseness, and subjective dyspnea, degree of dermatomal and motor blockade 20 minutes after the end of local anethetics injection Side of the block, volume of local anesthetics used, number of patients having Horner's syndrome (ptosis, miosis, and anhidrosis), hoarseness, and subjective dyspnea, degree of dermatomal blockade (C5, C6, C7, C8, and T1), and degree of motor blockade (median, ulnar, radial, and musculocutaneous nerve)
Waiting time for sitting position, heart rate variability, mean arterial pressure, heart rate, frequency of antihypertensives and opioids use, and onset of hypotensive bradycardic events after the sitting position (expected average of 2 hours including surgery readiness time and duration of surgery) Waiting time for sitting position (time from the end of interscalene brachial plexus block to the sitting position), logarithmically transformed high frequency, low frequency, and total power of heart rate variability, mean arterial pressure, heart rate, frequency of intraoperative use of antihypertensives and opioids, and onset of hypotensive bradycardic events
Trial Locations
- Locations (1)
Daegu Catholic University Medical Center
🇰🇷Daegu, Korea, Republic of