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Drudi et al: Comparison of immediate and short‐term outcomes of cricoarytenoid and thyroarytenoid lateralization in dogs with idiopathic laryngeal paralysis
Veterinary Surgery 3, 2022

🔍 Key Findings

  • Cricoarytenoid lateralization (CAL) resulted in a significantly greater increase in rima glottidis area at both immediate (205%) and 15-day (199%) time points compared to thyroarytenoid lateralization (TAL) (152% and 127%, respectively).
  • TAL group showed a significant reduction in rima glottidis area between immediate and 15-day postoperative measurements (P < .05), while CAL group had no significant reduction over time.
  • No dogs in either group showed postoperative complications, including aspiration pneumonia, at the 15-day follow-up.
  • All dogs showed improved clinical signs, including decreased stridor and increased exercise tolerance by day 15.
  • CAL produced more stable postoperative glottic area, potentially due to preserved anatomical tension, whereas TAL might experience tension loss due to thyroid cartilage repositioning.
  • Both procedures were technically effective and performed under the same protocol by a single board-certified surgeon.
  • Endoscopic image analysis was used to quantify rima glottidis area, demonstrating a reliable objective method for surgical outcome assessment.
  • Clinical outcome did not differ between groups, despite CAL showing a larger rima glottidis area.

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← Articles

Drudi et al: Comparison of immediate and short‐term outcomes of cricoarytenoid and thyroarytenoid lateralization in dogs with idiopathic laryngeal paralysis
Veterinary Surgery 3, 2022

🔍 Key Findings

  • Cricoarytenoid lateralization (CAL) resulted in a significantly greater increase in rima glottidis area at both immediate (205%) and 15-day (199%) time points compared to thyroarytenoid lateralization (TAL) (152% and 127%, respectively).
  • TAL group showed a significant reduction in rima glottidis area between immediate and 15-day postoperative measurements (P < .05), while CAL group had no significant reduction over time.
  • No dogs in either group showed postoperative complications, including aspiration pneumonia, at the 15-day follow-up.
  • All dogs showed improved clinical signs, including decreased stridor and increased exercise tolerance by day 15.
  • CAL produced more stable postoperative glottic area, potentially due to preserved anatomical tension, whereas TAL might experience tension loss due to thyroid cartilage repositioning.
  • Both procedures were technically effective and performed under the same protocol by a single board-certified surgeon.
  • Endoscopic image analysis was used to quantify rima glottidis area, demonstrating a reliable objective method for surgical outcome assessment.
  • Clinical outcome did not differ between groups, despite CAL showing a larger rima glottidis area.

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Multiple Choice Questions on this study

In Drudi 2022 et al., on CAL vs TAL outcomes, which technique resulted in a significantly greater increase in rima glottidis area at both postoperative time points?

A. Thyroarytenoid lateralization (TAL)
B. Cricoarytenoid lateralization (CAL)
C. Bilateral arytenoid lateralization
D. Partial laryngectomy
E. Laryngofissure

Answer: Cricoarytenoid lateralization (CAL)

Explanation: CAL showed a greater rima glottidis area increase than TAL at both immediate and 15-day assessments.
In Drudi 2022 et al., on CAL vs TAL outcomes, what clinical difference was reported between the two groups at 15-day follow-up?

A. CAL had more aspiration pneumonia
B. TAL dogs had worse respiratory effort
C. No clinical difference was observed
D. CAL showed poor recovery
E. TAL had more stridor

Answer: No clinical difference was observed

Explanation: Both groups had improved clinical signs with no differences at day 15.
In Drudi 2022 et al., on CAL vs TAL outcomes, what was the approximate mean increase in rima glottidis area at 15 days post-op for the CAL group?

A. 152%
B. 127%
C. 199%
D. 105%
E. 162%

Answer: 199%

Explanation: CAL maintained a mean 199% increase at 15 days, significantly higher than TAL.
In Drudi 2022 et al., on CAL vs TAL outcomes, which group demonstrated a significant reduction in glottic area between immediate and 15-day post-op periods?

A. CAL
B. TAL
C. Both
D. Neither
E. Unclear from data

Answer: TAL

Explanation: TAL showed a significant reduction from t0 to t1, while CAL did not.
In Drudi 2022 et al., on CAL vs TAL outcomes, what was the proposed reason for reduced glottic area at t1 in the TAL group?

A. Suture loosening due to coughing
B. Healing edema
C. Excessive suture tension
D. Relaxation of thyroid-arytenoid suture
E. Traction from pharyngeal muscles

Answer: Relaxation of thyroid-arytenoid suture

Explanation: Repositioning of thyroid cartilage may relax the suture, reducing abduction.

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