There has been quite a bit of research done on post-intubation injuries caused by the pressure of the endotracheal tube cuff. This is something that has been addressed by a few EMS agencies. My agency implemented a protocol based on the research about two years ago:
Pubmed [1]
Pubmed [3]
Endotracheal tube cuff pressures in patients intubated before transport.

Abstract
INTRODUCTION: Prolonged endotracheal tube cuff pressures (ETTCPs) greater than 30 cm H(2)O cause complications ranging from sore throat to rare cases of tracheoesophageal fistula. In a series of patients, we sought to determine the proportion of patients with overinflated cuffs and to determine whether overinflation was associated with demographics, diagnostic category, or intubator credentials. METHODS: Between July 2007 and April 2008, we measured cuff pressures on a convenience sample of patients drawn from 2 groups. The "helicopter group" had pressure measured before transport by a single aeromedical transport service. The "hospital group" had pressure measured upon arrival to 1 of 2 emergency departments after being intubated before transport. RESULTS: Three hundred patients aged 4 to 92 years (median, 57) were studied: 59.7% were male; and diagnostic categories were neurologic (33.7%), trauma (32.7%), cardiac (12.7%), and general medical/surgical (21.0%). Intubation occurred 1 to 28 000 minutes before ETTCP assessment (median, 60). Endotracheal tube cuff pressure was greater than 30 cm H(2)O in 64.7% and ranged from 10 to 180 (median, 40). Forty-nine percent of patients had ETTCP greater than 40 cm H(2)O. There was no association between ETTCP and age group, sex, diagnostic category, ETT size, time between intubation and ETTCP assessment, or intubator credentials. CONCLUSIONS: The most compelling results of the study are the high rates of elevated ETTCPs. Furthermore, there were no clear risk factors for elevated ETTCP. Although the risk of elevated ETTCP in the prehospital to acute care time frame is unclear, it seems reasonable to measure ETTCP after intubation in all patients.

Pubmed [4]
Intubation-induced tracheal stenosis -- the urgent need for permanent solution.

Abstract
The most common site for the occurrence of intubation-induced tracheal damage is at the area in contact with the inflatable cuff. After the change from high-pressure to low-pressure cuffs, major tracheal lesions still continue to occur. This is a case of tracheal stenosis that occurred after 7 days of intubation with standard cuffed tube whose cuff pressure was assessed by subjective means. Three weeks later, patient was in need of reintubation, the trachea was found to be stenotic at the site of the previous tube cuff. Emergency tracheostomy had to be performed and computed axial tomography (CT) confirmed the tracheal stenosis. A month later, the patient had another cardiac arrest from which he did not recover. Our message in this report is to throw light and alert clinicians involved in tracheal intubation, of the presence of the Lanz endotracheal tube whose pilot balloon is designed to automatically regulate the intra-cuff pressure and thus prevent the occurrence of tracheal stenosis due to high pressure. We strongly recommend the presence of Lanz tracheal tubes as standard emergency equipment in intensive care settings and in any situation in which cuff pressure is likely to increase.

EMSResponder.com - Link to related article.