Preoperative oral rehydration solution intake volume does not affect relative change of mean arterial blood pressure and crystalloid redistribution during general anesthesia in low-risk patients: an observational cohort study.

Despite the implementation of liberal preoperative fasting routines, it is unclear whether preoperative oral rehydration solution intake volume affects blood pressure during general anesthesia. We enrolled 60 patients (American Society of Anesthesiologists status I/II) undergoing tympanoplasty. Patients drank 200-1,000 ml oral rehydration solution until 2-3 h before anesthesia induction.

[Emergent thoracic endovascular aortic repair in a patient with hemoptysis due to bronchial fistula: a case for airway management].

Bronchial fistula due to bronchial compression is a rare complication following both open surgical and endovascular repair of thoracic aortic aneurysms. We report on the airway management for a case of emergent thoracic endovascular aortic repair (TEVAR) in a patient with left bronchial obstruction due to hemoptysis. A 68-year-old man had undergone total arch replacement 8 years before, and was preoperatively diagnosed with aortobronchial fistula in the left lung.

Hydration status after overnight fasting as measured by urine osmolality does not alter the magnitude of hypotension during general anesthesia in low risk patients.

Background: The increased distribution of crystalloid solution into the interstitial space may decrease the effectiveness of intravascular volume loading in patients. We investigated whether preoperative hydration status after overnight fasting affects interstitial fluid redistribution and thus the magnitude of hypotension during general anesthesia.

Methods: Sixty ASA physical status I/II patients undergoing tympanoplasty fasted from midnight.

Blood transfusion-induced anaphylaxis and coronary artery spasm during general anesthesia.

Anaphylactic reactions to blood transfusion can lead to life-threatening cardiovascular disruptions. We describe a case in which anaphylaxis due to blood transfusion during general anesthesia was the probable cause of coronary artery spasm. Thirty minutes after the transfusion of concentrated red blood cells, the patient's blood pressure had dropped to 70/40 mmHg and peak airway pressure had increased to 35 cmH2O.