The ultimate goal of this work is to establish a method for control bleeding after tonsillectomy in awake children. Treatment of post-tonsillectomy bleeding in children typically requires general anesthesia with currently used electrocautery techniques. Micropolysaccharide hemosphere technology is a unique absorbable agent that helps clot form. These hemospheres consist of 100% purified plant starch that enhances natural clotting by concentrating blood solids such as platelets, red blood cells, and blood proteins on the particle surfaces to form a gelled matrix. This device provides painless, non-irritating control of bleeding, and has been used effectively for control of nosebleeds in awake adult patients. This device, however, has not been tested in the tonsillar fossae in children; thus, this study is performed to determine if at least 50% of children with bleeding tonsillar fossae can be spared rescue treatment with electrocautery.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
MPH is applied as an aerosolized powder which is applied to the bleeding fossa, immediately after suctioning the freshly completed tonsillotomy site to expose the tonsil bed. A separate aerosolizer is used for each patient in order to maximize uniformity per standard dose applied. Each initial dose remains in situ for up to 60 seconds in an attempt to achieve complete hemostasis with a single dose. (Prior data from MPH use has shown that 30-60 seconds is the time typically required for hemostasis for diffuse, non-arterial bleeds.) If there is persistent bleeding after this timeframe, then the bed is irrigated and suctioned and a second equivalent dose is applied. No pressure pack and no oxymetazoline or other topical vasoconstrictor is applied in either group during these initial hemostatic steps, since they are potential confounders of hemostatic effect.
Monopolar suction electrocautery is used at 20 Watts. Cautery is applied with a light surface touch until bleeding has stopped. In addition, any prominent visible vessels are cauterized.
Massachusetts Eye and Ear Infirmary
Boston, Massachusetts, United States
Primary outcome measure: Adequacy of intraoperative hemostasis, as evaluated by the following metrics: 1. Requirement for rescue hemostasis. 2. Time to complete hemostasis.
Time frame: 0-14 days postoperatively
The main secondary outcome measure is the number of patients with adverse events. These adverse events are expected to occur in the following forms: postoperative primary hemorrhage, postoperative secondary hemorrhage, and severe postoperative pain.
Time frame: 0-14 days postoperatively
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