Masui. The Japanese journal of anesthesiology
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General anesthesia was given to six surgical patients with hypertrophic cardiomyopathy on eight occasions from 1990 to 1992. Anesthetic courses were uneventful in five patients diagnosed previously as hypertrophic cardiomyopathy. ⋯ A slight hypotension caused by epidural anesthesia had a devastating effect on the patient. The above experiences stress the importance of early diagnosis and careful observation in perioperative period.
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A sixty-year-old male patient with caries of the cervical spine suffered from cardio-respiratory arrest outside the hospital. Laryngeal mask was inserted into his pharynx and he was brought to the emergency department of our hospital under CPR by emergency paramedical staffs. Endotracheal intubation was tried three times with a Macintosh laryngoscope but was unsuccessful. ⋯ At last Bullard intubating laryngoscope with videocamera system was operated. An endotracheal tube was easily inserted into his trachea with it and effective cardiopulmonary resuscitation was managed under reliable airway maintenance. These facts indicate that Bullard intubating laryngoscope is valuable at the emergency department and it should be always available there.
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We evaluated the significance of patient's position in the measurement of gastric contents at the induction of anesthesia (n = 18). After the induction of general anesthesia with tracheal intubation, a nasogastric tube (16F) was inserted into the stomach. ⋯ The existence of the gastric content which can not be aspirated with supine position was confirmed. We conclude that it is necessary to place the patient on bilateral decubitus positions besides supine to evaluate the volume of the gastric content correctly.
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The significance of phrenic nerve block was studied in the anesthetic management of laparoscopic cholecystectomy. Right phrenic nerve block with 1% mepivacaine 10 ml was performed after the patients were epidurally catheterized and anesthetized with isoflurane and nitrous oxide in oxygen. Intraoperative anesthetic requirement and postoperative shoulder pain incidence in patients with this block were compared with those in patients without block. ⋯ It is known that phrenic nerve contains sensory element and that laparoscopic procedures of gall bladder elicit noxious stimuli which cannot be blocked by ordinary epidural anesthesia for abdominal surgery. Also, shoulder pain is said to be phrenic nerve-mediated referred pain. Our study suggests that blockade of these stimuli is effective in preventing postoperative event rather than intraoperative.
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We examined the cerebrovascular CO2 reactivity (K) determined by measurements of the middle cerebral artery blood flow velocity (Vm) with transcranial Doppler ultrasonography (TCD) in 24 anesthetized patients. The relationship between Vm and mean arterial blood pressure (mBP) showed a linear regression in each constant level of PaCO2. ⋯ The validity of K values could be enhanced under conditions of the delta PaCO2 > or = 12.5 mmHg and the variation in arranged mBP < or = 30 mmHg. This methodology with TCD can be used to correlate changes in cerebral blood flow and provide much benefit for the evaluation of cerebrovascular CO2 reactivity.