A meconium-stained, full-term infant has an initial Apgar score of 2. The oropharynx is suctioned and the infant is placed on a heated table. Which of the following is the most appropriate next step in management of the airway?
(A) If the oropharynx is clear, observation for respiratory effort
(B) Placement of an oxygen mask and application of positive pressure to clear the airway
(C) Nasotracheal suctioning
(D) Tracheal suctioning using the endotracheal tube
(B) abdominal pain secondary to chronic pancreatitis
(C) persistent chest wall pain secondary to intercostal neuralgia following a thoracotomy for trauma
(D) reflex sympathetic dystrophy of the upper extremity with an excellent but transient response to a series of stellate ganglion blocks with local anesthetic
(E) a diabetic patient scheduled for surgical sympathectomy to relieve unilateral lower extremity pain secondary
A 25-year-old woman is undergoing emergency appendectomy at 36 weeks' gestation. Following subarachnoid injection of hyperbaric bupivacaine and placement in the supine position, the patient has nausea; heart rate is 105 bpm and blood pressure is 90/60 mmHg. Which of the following is the most appropriate management?
(A) Displacement of the uterus to the left
(B) Immediate tracheal intubation
(C) Intramuscular administration of ephedrine
(D) Placement of the operating table in the reverse Trendelenburg position
You are called to a witnessed cardiac arrest where cardiopulmonary resuscitation is being performed. After successful intubation, arterial blood gas values are PaO2 86 mmHg, PaCO2 63 mmHg, and pH 7.25 at an FiO2 of 1.0. The most appropriate management at this time is to
(A) repeat arterial blood gas analysis using a new specimen
(B) administer sodium bicarbonate
(C) administer fluid challenge with 500 ml of normal saline solution