After receiving an axillary block for carpal tunnel release, a patient has pain on incision. Which of the following nerves should be blocked at the level of the elbow to relieve the pain?
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. PetC02 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 arterial waveform and EKG shown are from a 60-year-old man with uremia who is the PACU after hip surgery under general anesthesia. The patient is drowsy, extubated, and breathing easily. The most likely diagnosis is
(A) hypovolemia
(B) myocardial ischemia
(C) nontension pneumothorax
(D) pericardial tamponade
(E) pulmonary embolus
D
Which of the following statements concerning the ventilatory effects of inhalational anesthesia is true?
(A) Assisted ventilation is not an effective technique to achieve normocarbia
(B) Surgical stimulation does not affect ventilation
(C) Combined doses of nitrous oxide and isoflurane depress ventilation the same as an equipotent dose of isoflurane alone
(D) The ventilatory response to increasing carbon dioxide concentration is normal
(E) The ventilatory response to hypoxemia is preserved
A
In pregnant patients, which of the following is an effect of the long-term use of cocaine?
(A) Decreased uterine tone
(B) Decreased thiopental requirement
(C) Increased isoflurane MAC
(D) Increased sensitivity to ephedrine
(E) Lower than expected level of block with tetracaine spinal analgesia
A patient undergoes differential spinal block for evaluation of persistent foot pain. If the pain returns coincident with a decrease in skin temperature, which of the following is the most appropriate conclusion?
A 70-year-old patient is shivering and has chest pain in the PACU following a cholecystectomy. Heart rate is 120 bpm, and blood pressure is 220/120 mmHg. SpO2 is 97% at an FiO2 of 0.4. An ECG shows ST-T wave changes, which are not affected by intravenous administration of nitroglycerin. Which of the following is the most appropriate next step?