The Aim of This Study is to Measure Blood Flow Before and After a Block
Conditions
Brief summary
Pediatric urologic surgery is generally accompanied by use of a caudal or penile block for analgesia. A caudal block is performed by injecting local anesthetic in the low epidural space while a penile block is performed by injecting local anesthetic above the pubic symphysis. Local anesthetic in the epidural space is known to caudal vasodilation interiorly. It is unknown as to whether this vasodilation results in alteration in flow to the penile tissue and potentially changes tissue characteristics. The aim of this study is to measure blood ultrasound velocity in the dorsal penile artery and vein before and after a block.
Detailed description
Pediatric urologic surgery is generally accompanied by use of a caudal or penile block for analgesia. A caudal block is performed by injecting local anesthetic in the low epidural space while a penile block is performed by injecting local anesthetic above the pubic symphysis. Local anesthetic in the epidural space is known to caudal vasodilation interiorly. It is unknown as to whether this vasodilation results in alteration in flow to the penile tissue and potentially changes tissue characteristics. The aim of this study is to measure blood ultrasound velocity in the dorsal penile artery and vein before and after a block.
Interventions
PROCEDUREBlock performed
Comparing block performed with penile blood flow
DEVICELMA placement
Placement of LMA for airway securement
Sponsors
Baylor College of Medicine
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
MALE
Age
2 Years to 7 Years
Healthy volunteers
No
Inclusion criteria
* Children ages \<7 years undergoing circumcision at TCH Penile or Caudal block to be performed at discretion of anesthesiology/Urology providers * ASA classification1,2 * use of laryngeal mask airway
Exclusion criteria
* Previous cardiac surgery * Antihypertensive medication * requirement for intravenous anesthetic * ASA classification non 1,2 * parental refusal of participation parental refusal of block * patients requiring intubation
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| penile blood flow | 20 minutes | assessment of changes using ultrasound to blood flow based on block performed |
Countries
United States
Contacts
Primary Contactadam c adler, MD
Backup Contactpaul austin, md
Outcome results
None listed