Which of the following produces falsely high Sp02?
(A) Carboxyhemoglobin
(B) Fetal hemoglobin
(C) Hematocrit less than 20%
(D) Indigo carmine
(E) Methylene blue
D
A patient becomes flushed, dyspneic, and hypotensive during transfusion of 1 unit of packed red blood cells in the PACU. After discontinuing the transfusion, the most appropriate next step is administration of
A 72-year-old man has massive venous hemorrhage during a radical prostatectomy. Blood pressure decreases from 110/60 to 75/30 mmHg and central venous pressure decreases from 12 to 4 mmHg. End-expiratory carbon dioxide tension decreases from 34 to 24 mmHg during constant minute ventilation. The most appropriate next step should be to
(A) apply positive end-expiratory pressure to the breathing circuit
(B) attempt to aspirate air from the central venous catheter
(C) expand intravascular volume
(D) place the patient in the Trendelenburg position
(E) turn the patient to the left lateral decubitus position
The newborn infant of an 18-year-old heroin addict has an initial Apgar score of 1. After intubation of the trachea and ventilation with pure oxygen, the Apgar score is 3 at five minutes. Appropriate management at this time would include administration of each of the following EXCEPT
A 2600-g neonate is to undergo surgical repair of a small gastroschisis. The infant is preoxygenated with 100% oxygen. Arterial hemoglobin desaturation is noted during laryngoscopy after a rapid-sequence induction. Which of the following is the most likely cause?
(A) High fetal hemoglobin concentration
(B) High ratio of oxygen consumption to functional residual capacity
(C) Low functional residual capacity in milliliters per kilogram