Intravenous dexamethasone pretreatment reduces fentanyl-induced cough.

BACKGROUND/PURPOSE: Fentanyl is regularly used in clinical anesthesia practice but fentanyl-induced cough (FIC) will sometimes bother anesthesiologists. This study was designed to examine the effect of intravenous (IV) dexamethasone (DEX) on FIC. METHODS: Eighty ASA class I-II patients, aged 18-80 years and weighing 40-90 kg, scheduled for elective surgery were given DEX to reduce FIC. One hundred and eight patients from our previous study database on FIC, after excluding smokers, comprised the reference group. All patients were given fentanyl (100 mug for 40-69 kg and 150 mug for 70-90 kg for clinical convenience) over 2 seconds via the proximal port of a peripheral IV line in the forearm. Patients in the treatment group received DEX (10 mg, IV) 5 minutes prior to fentanyl injection, while those in the reference group received fentanyl injection only without any premedicant. We recorded the number of coughs of each patient for 30 seconds after fentanyl injection. RESULTS: The incidence of cough was 6.3% in the DEX group and 21.3% in the control group, respectively (p = 0.008). However, the severity of cough observed was not significantly different by DEX pretreatment (p > 0.05) or hemodynamic profiles. CONCLUSION: DEX (10 mg, IV) 5 minutes prior to fentanyl injection reduces the incidence of FIC and can be an ideal premedicant for general anesthesia induction.

Preventing prolonged post-operative ileus in gastric cancer patients undergoing gastrectomy and intra-peritoneal chemotherapy.

AIM: To assess the efficacy of metoclopramide (Met) for prevention of prolonged post-operative ileus in advanced gastric cancer patients undergoing D2 gastrectomy and intra-peritoneal chemotherapy (IPC). METHODS: Thirty-two advanced gastric cancer patients undergoing D2 gastrectomy and IPC were allocated to two groups. Sixteen patients received Met immediately after operation (group A), and 16 did not (group B). Another 16 patients who underwent D2 gastrectomy without IPC were enrolled as the control group (group C). All patients had received epidural pain control. The primary endpoints were time to first post-operative flatus and time until oral feeding with a soft diet without discomfort. Secondary endpoints were early complications during hospitalization. RESULTS: Gender, the type of resection, operating time, blood loss, tumor status and amount of narcotics were comparable in the three groups. However, the group C patients were older than those in groups A and B (67.5+/-17.7 vs 56.8+/-13.2, 57.5+/-11.7 years, P = 0.048). First bowel flatus occurred after 4.35+/-0.93 d in group A, 4.94+/-1.37 d in group B, and 4.71+/-1.22 d in group C (P>0.05). Oral feeding of a soft diet was tolerated 7.21+/-1.92 d after operation in group A, 10.15+/-2.17 d in group B, and 7.53+/-1.35 d in group C (groups A and C vs group B, P<0.05). There was no significant difference in respect to the first flatus among the three groups. However, the time of tolerating oral intake with soft food in groups A and C patients was significantly shorter than that in group B patients. Levels of C-reactive protein (CRP) were significantly lower in group C and there was a more prominent and prolonged response in CRP level in patients undergoing IPC. The incidence of post-operative complications was similar in the three groups except for prolonged post-operative ileus. There was no increased risk of anastomotic leakage in patients receiving Met. CONCLUSION: The results suggest that a combination of intravenous Met and epidural pain control may be required to achieve a considerable decrease in time to resumption of oral soft diet in advanced gastric cancer patients who underwent gastrectomy and IPC. Furthermore, the administration of Met did not increase anastomotic leakage. Met has a role in the prevention of prolonged post-operative ileus.

Unexpected pulmonary aspiration during endoscopy under intravenous anesthesia.

Intravenous anesthesia is commonly used during endoscopy. This approach greatly improves patient satisfaction with pain control. The risks of anesthesia are usually focused on the cardiopulmonary effects of anesthetics. The risk of pulmonary aspiration is often overlooked, unless there are other risk factors that may increase the incidence of pulmonary aspiration. Here, we report a patient with unexpected aspiration pneumonia after gastroscopy under intravenous anesthesia. We suggest that pulmonary aspiration should be taken into consideration as a risk associated with anesthesia for gastroscopy.

Bradycardia and hypotension refractory to ephedrine and atropine treatment: severe autonomic dysfunction with abnormal heart rate variability.

Diabetic patients with autonomic dysfunction are potentially poor risks for anesthesia and particular care is needed during and after surgery. We here report a 48-year-old male patient with diabetes mellitus who suffered from intraoperative hypotension and bradycardia which did not respond to ephedrine and atropine treatment and eventuated in cardiac arrest. A heart rate variability study confirmed the diagnosis of autonomic dysfunction after the event. Possible predisposing mechanisms and anesthetic considerations are discussed.

Postoperative sedation after major surgery with midazolam or propofol in the ICU: effects on amnesia and anxiety.

BACKGROUND: Propofol and midazolam are commonly used in the ICU to alleviate physical and psychological disturbances in consequence of anxiety. This study was conducted to assess and compare the impact of postoperative sedation after major surgery with midazolam or propofol on amnesia and anxiety in conscious patients under intensive care. METHODS: One hundred and two adult patients irrespective of sex and age, receiving thoracic, abdominal or other major truncal surgery necessitating close care at the ICU, were randomly allocated into midazolam or propofol group. Prior to surgery, all patients were subjected to evaluation of the levels of anxiety and amnesia, which was repeated on the following morning with the level of anxiety and the level of amnesia assessed just before and 30 min after cessation of midazolam or propofol medication, respectively. RESULTS: There were no significant differences between the two groups regarding gender, age, types of analgesics used, and anxiety. In both groups, the levels of anxiety (P < 0.001) and amnesia (P < 0.001) were improved significantly over the following day. Midazolam had more pronounced effects on amnesia than propofol (P < 0.001). There were no significant differences between the two groups in the pre- or post-drug anxiety (P = 0.189). CONCLUSIONS: Both midazolam and propofol are effective amnesic and anxiolytic drugs. Midazolam tends to have more favorable effects on amnesia. It is speculated that combination of propofol and midazolam may give better results for treating critically ill ICU patients, the confirmation of which necessitates further study.

Pulmonary edema secondary to the airway obstruction in a patient with parkinson's disease.

Pulmonary edema is a potentially life-threatening complication of acute airway obstruction that develops rapidly without warning in persons who are otherwise well. Respiratory abnormalities have been reported in patients with Parkinson's disease, especially obstructive airway. To our knowledge, pulmonary edema secondary to airway obstruction in patients with Parkinson's disease has not been reported previously. Here, we describe a case of Parkinson's disease complicated with pulmonary edema, and airway obstruction might be the mechanism.