Coronary artery spasm as a cause of droperidol-induced ventricular fibrillation.
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Antiemetics↗
Biomedical subjects
Ryotaro Kayo
Publications and source records attributed to Ryotaro Kayo.
[A study on insertion of a nasogastric tube in intubated patients].
BACKGROUND: Insertion of a nasogastric tube in anesthetized and intubated patients is sometimes difficult. We studied the movement of a gastric tube in order to find a way for successful insertion of a nasogastric tube. METHODS: We used the method of Ozer's; bronchofiber examination of nasogastric tube placement in an anethetized patient, with changing heights of a pillow [0 cm, 5 cm, 10 cm], rotating head [45 degree each side] and jaw lifting. RESULTS: The height of the pillow is an important factor regardless of other maneuvers. CONCLUSIONS: Our study showed that using a 5 cm height pillow was a best way to insert a nasogastric tube, but ipsilateral head rotation did not contribute to the procedure.
Anesthesia, General↗
[A case of latex allergy induced by indwelt Foley catheter].
A 7-year-old boy with microtia was scheduled for otoplasty under general anesthesia. A Foley catheter was indwelt very gently following tracheal intubation but his foreskin showed remarkable edema about 15 minutes later. All vital signs were normal. His lungs were ventilated easily and no rash or edema was found except for penis. Operation was completed uneventfully as planned. He recovered from anesthesia smoothly but foreskin edema still remained. Allergic reaction was suspected and scratch test was performed to determine the allergen on the next day. Positive reaction to Foley catheter extracts and high serum latex-specific IgE antibody level proved that latex containing Foley catheter had caused foreskin edema. All anesthesiologists should pay attention to latex allergy and interview all patients in detail in preanesthetic evaluation.
Anesthesia, General↗
[False decrease in pulse oximetry readings due to patent blue in a patient with breast cancer].
A 61-year-old woman with breast cancer was scheduled for breast preserving therapy under general anesthesia. After the tracheal intubation, 4 ml of 2% patent blue was injected into the skin to determine sentinel lymph node. Thirty seconds after injection, the pulse oximetry reading (SpO2) decreased from 100% to 60% and recovered to 90% over the next 5 minutes. At the time when SpO2 was 88%, arterial blood gas analysis showed PaO2 184.4 mmHg (FIO2 0.45) and all other vital signs were normal. About 120 minutes later, SpO2 rose to 99%. The operation was completed uneventfully and the patient recovered from anesthesia smoothly. After extubation, arterial blood gas analysis was performed again and it showed PaO2 of 82.5 mmHg (FIO2 0.21). We conclude that patent blue injection caused this decrease in SpO2 and recommend to evaluate the oxygen status not only by pulse oximetry but also by blood gas analysis when patent blue is used.
Anesthesia, General↗