The incidence of difficulty with intubation in the general population depends upon the definition used but results as high as 37% have been published. Endocrine disorders such as diabetes and hyperthyroidism have been linked to an increased incidence of difficult intubation via laryngoscopy. Hypercalcemia with resulting calcification has been demonstrated to result in neck pain, decreased cervical range of motion, and loss of skin and tendon compliance. We speculated that patients with hyperparathyroidism and resulting hypercalcemia would have an increased incidence of intubation difficulty via laryngoscopy.
We studied 382 patients presenting for parathyroidectomy in whom direct laryngoscopy was initially attempted compared to 262 patients presenting for abdominal surgery in whom laryngoscopy was initially attempted via retrospective chart review. Difficult laryngoscopy was defined as 3 or greater attempts at direct laryngoscopy or 2 attempts and the use of airway adjunct (Eschmann stylet), flexible fiberoptics, or an indirect laryngoscope (Pentax AWS or Airtraq). Awkward intubation was defined as requiring > 1 attempt at laryngoscopy, intubation requiring a change in laryngoscope blade, the use of an airway adjunct (Eschmann stylet), or a Cormack and Lehane's view on initial laryngoscopy > 2. Hypercalcemia was defined as serum [Ca2+] > 10.2 mg/ dl. Propensity score matching was done to create 88 matched patient sets. McNemar's test was used to evaluate intubation difficulties in patients presenting for parathyroidectomy. The relationship between difficult laryngoscopy and hypercalcemia in parathyroidectomy patients was assessed by simple logistic regression (unadjusted) and multiple logistic regression.
There is no difference in the rate of difficult or awkward laryngoscopy or the rate at which laryngoscopy was abandoned in favor of another means of intubation between parathryoidectomy and abdominal surgery patients. Hypercalcemia also does not impact laryngoscopy difficulty.
To our knowledge, this is the first manuscript evaluating the impact of parathryoidectomy surgery and hypercalcemia on ease of intubation via laryngoscopy. Despite the fact that patients presenting for parathyroidecomy have many potential etiologies of increased difficulty with laryngoscopy, they do not appear to be at increased risk of laryngoscopy problems. The same is true of those patients presenting with hypercalcemia. Source(s) of support: There was no source of funding for this study. Presentation at a meeting: Society for Airway Management Annual Meeting 2009 Las Vegas NV and American Society of Anesthesiologists Annual Meeting 2010 San Diego, CA. Conflicting Interest (If present, give more details): With regard to conflict of interest, Dr. Arndt is a paid consultant for Cook Medical and receives royalties based on the sale of products that he invented.
[Show abstract][Hide abstract] ABSTRACT: INTRODUCTION.Ruptured abdominal aortic aneurysm (AAA) is a life-threatening condition with an overall
mortality rate of 65%. Massive haemorrhage requires infusion of fluids that do not contain clotting factors which develops dilutional coagulopathy. Rotational thrombelastometry (ROTEM) permits differential diagnosis of the underlying pathomechanism of coagulopathy. PCC showed much efficiency in the treatment of intraoperative massive bleeding .
CASE REPORT. A 79-year-old man was addmited to Vascular Surgery Department, Clinical center in Nis as an emergency with the symptoms of AAA rupture. After resuscitation he was trasported to the operation room (Hgb: 45 g/L, HCT: 15%, BP: 80/40 mmHg). Massive infusion of crystalloids, colloids and plasma expanders kept the patient hemodinamically stable but led to dilutional coagulopathy. Transfusion of platelets, cryoprecipitate and fresh-frozen plasma (FFP) were provided together with tranexamic acid. Total blood loss during the surgery was 5L and 1.85L was returned to the patient by autotransfusion. Coagulation status was checked by ROTEM. The greatest deviation was found in the INTEM, CFT=3374s and α=12o (Picture 1) and in the EXTEM, CFT=169s and α=66o (Picture 2).
After the infusion of 500IJ PCC, the results of INTEM went back to normal ranges (CFT=71s, α=76o) (Picture 3), as well as the results of EXTEM (CFT=71s, α=77o) (Picture 4). After the extensive operation, the patient spend 5 days in the Intensive care unit and was discharget from hospital after 26 days.
CONCLUSION. PCC improves coagulation stability faster and more efficient than FFP without the risk of
transfusion, volume load and infectious complications.
XII SERBIAN CONGRESS OF ANESTHESIOLOGISTS&INTESIVISTS, Belgrade; 10/2014
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