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Status unknownNCT03824288Updated Aug 20, 2019

Ultrasound-Guided Aspiration of PTA vs Conventional Landmark Technique - a RCT

An interventional study of Intraoral ultrasound and The landmark technique in Peritonsillar Abscess, sponsored by Tobias Todsen. Status unknown at 2 sites in Denmark. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2019-08-20.

Sponsored by Tobias Todsen · Not applicable, Interventional, and Diagnostic

The sponsor has not verified this record recently (last verified Aug 2019), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
88
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The study is a prospective randomized controlled trial conducted at two different centers at the Department of ORL - Head \& Neck Surgery, Odense University Hospital and the Department of Otorhinolaryngology, Head and Neck Surgery \& Audiology, Rigshospitalet.

The research question is:

In a group of patients referred to an otolaryngology department with objective findings of peritonsillar abscess, what are the effects of using intraoral ultrasound to diagnose and guide needle aspiration compared to the traditional landmark-based technique, when measured by the number of performed needle aspirations, procedure-related pain and days on sick leave?

The secondary outcomes measured are

  • Number of hospitalization days
  • Number of Quincy tonsillectomies
  • Number of visits to an outpatient clinic
  • Patient-reported outcome (measured using an 11-point numeric rating scale)
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Conditions studied

  • Peritonsillar Abscess

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03

In context

Abscess

149 studies on the registry are indexed under Abscess; 32 are open to participants now.

This study's planned enrollment of 88 is close to the median of 96 across 102 interventional studies indexed under Abscess.

Browse Abscess studies →

Lead sponsor

Tobias Todsen is the lead sponsor of 3 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Patients referred to the Department of Otorhinolaryngology suspected for peritonsillar abscess
  • Clinical findings of peritonsillar abscess by one of the following:

    1. Trismus
    2. Unilateral tonsillar/peritonsillar swelling

Exclusion criteria

Exclusion criteria:

  • Compromised airways or suspected retro / parapharyngeal abscess
  • Needle aspiration of pus already performed (or participated in the study once earlier)
  • Cannot understand the written information
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Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Investigator, Outcomes assessor)
Enrollment
88 participants (estimated)

Study arms

  • Active comparator
    The landmark technique

    PTA a needle aspiration attempted according to the landmark technique is conducted. If the initial aspiration is unsuccessful, two additional attempts are made in the middle and lower pole of the tonsil.

    Procedure: The landmark technique

  • Experimental
    Ultrasound-guided aspiration

    An intraoral ultrasound is conducted with a Burr-Hole N11C5s transducer (BK Ultrasound) and if an abscess cavity is suspected, an ultrasound-guided aspiration is performed with an in-plane needle guide attached to guide the needle.

    Diagnostic Test: Intraoral ultrasound

Interventions

  • Diagnostic testIntraoral ultrasound

    The ultrasound transducer (either Hockey Stick or Burr-Hole N11C5s transducer from BK Ultrasound) is placed on the palatoglossal arch on the affected side and sweeped from the cranial to caudal end of the tonsil to look for an abscess cavity identified as a hypoechoic area with ill-defined margins.

  • ProcedureThe landmark technique

    A 14G needle aspiration is inserted blindly in the superior tonsil pol where pus aspiration is attempted.

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What researchers measure

Primary outcomes

  1. needle aspirations

    total number of needle aspirations performed

    Time frame: From date of randomization until the date of full recovery from the treated peritonsilar infection, assessed up to 1 months.

  2. proportion of succesfull needle aspirations

    proportion of needle aspirations with aspiration of pus

    Time frame: From date of randomization until the date of full recovery from the treated peritonsilar infection, assessed up to 1 months.

  3. days on sick leave

    Total number of days on sick leave after first intervention

    Time frame: From date of randomization until the date of full recovery from the treated peritonsilar infection, assessed up to 1 months.

Secondary outcomes

  1. Number of hospitalization days

    Time frame: From date of randomization until the date of full recovery from the treated peritonsilar infection, assessed up to 1 months.

  2. Number of quincy tonsillectomies

    Time frame: From date of randomization until the date of full recovery from the treated peritonsilar infection, assessed up to 1 months.

  3. Number of visits in outpatient clinic

    Time frame: Until full recovery from peritonsilar infection

  4. Patient-reported outcome

    Patients are asked to choose one number, on a scale from 0 (no pain) to 10 (severe pain), corresponding to the intensity of their pain - meassured using a 11-point numeric rating scale (NRS-11).

    Time frame: From date of randomization until the date of full recovery from the treated peritonsilar infection, assessed up to 1 months.

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Study locations

2 of 2 sites recruiting
  • Rigshospitalet
    Copenhagen, Copenhagen East 2100, Denmark
    • Tobias Todsen, MD, PhD · Contact
    Recruiting
  • Odense University Hospital
    Odense, Odense C 5000, Denmark
    • Sanne H Michaelsen, MD · Contact
    Recruiting
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References and documents

Publications

  • Todsen T, Stage MG, Michaelsen SH, Tolsgaard MG, Melchiors J, Madsen AR, Hahn CH, Godballe C. Protocol for a randomised clinical trial of transoral ultrasound versus standard of care in the diagnosis of peritonsillar abscess. Dan Med J. 2019 Nov;66(11):A5573. PubMed 31686648 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 20, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03824288
Lead sponsor
Tobias Todsen
Collaborators
Odense University Hospital
Responsible party
Tobias Todsen (MD, PhD, Rigshospitalet, Denmark) — Sponsor-investigator
First posted
Jan 31, 2019
Start date
Nov 26, 2018
Primary completion
Aug 30, 2019 (estimated)
Completion
Apr 30, 2020 (estimated)
Last update
Aug 20, 2019

Study contacts

Tobias Todsen, MD, PhD
Contact
tobias.todsen@regionh.dk
51847468

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Aug 2019. You cannot join it, but the record below documents what was studied.

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