7. Which of the following statement concerning the cause of cancer pain is least likely?
(A) Vanilloid receptor TRPV1 is expressed in most nociceptors, it detects heat and extracellular protons.
(B) In order to detect noxious mechanical stimuli, nociceptors express mechanically gated channels that initiate a signally cascade upon excessive stretch.
(C) Low pH can activate acid-sensing ion channel-3 (ASIC-3).
(D) Tumour cells can release protons and produce local acidosis.
(E) TRPV1 is activated when the pH rise above 6.0.

3. Which of the following indication for sympathetic blocks is wrong: (A) Stellate ganglion block for head and neck. (B) Stellate ganglion and 1st and 2nd thoracic ganglia blocks for upper limb. (C) Greater and lesser splanchnic nerve blocks for visceral pain from upper abdomen. (D) Ganglion impar block for visceral pain from descending colon and pelvic organs. (E) Lumbar sympathetic ganglia blocks for lower extremities.

4. Which of the following statements about transcutaneous electrical nerve stimulation (TENS) is right: (A) Adverse effect includes transient increases in pain and muscle twitching. (B) TENS safe for infant during delivery can be applied over or anywhere near the pregnant uterus. (C) Cardiac pacemakers with fixed frequencies may malfunction by TENS. (D) Stimulating post part of neck may be dangerous, due to induce spasms the intrinsic muscle of larynx. (E) Skin redness under electrodes after TENS was not reported.

5. Following right anterolateral cordotomy, which symptom is not related to procedure? (A) Left side leg weakness (B) Respiratory dysfunction (C) Left side dysesthetic pain (D) Ataxia (E) Bladder dysfunction

6. Following statements about anticonvulsants in neuropathic pain is wrong: (A) Carbamazepine provides satisfactory pain control in trigeminal neuralgia (B) Tolerability is better with oxcarbazepine compared with carbamazepine (C) Lamotrigine reduces pain intensity in HIV neuropathy (D) Gabapentin directly modifies sodium channel currents (E) Gabapentin improves postherpetic neuralgia.

8. Which of the following statement concerning the treatment of cancer pain is least likely? (A) Obeying the principles of the analgesic ladder approach, 71% of patients will achieve good pain relief without further intervention. (B) Oral morphine remains the drug of choice according to the analgesic ladder of the WHO. (C) The most common use of radiotherapy is for metastases abdominal pain. (D) The patient with advanced cancer is in the dynamic state with changing pathology. (E) About 60% of patients who receive radiotherapy will achieve at least 50% pain relief.

9. Which of the following statement concerning the pain in the elderly is least likely? (A) The elderly are less likely than younger patients to report pain associated with acute pathology. (B) The prevalence of chronic pain appears peaked at late-life. (C) Among chronic pain patients, there may be a change in the quality but not the intensity of chronic pain with age. (D) The affective and cognitive components of pain do not appear to be age related. (E) Pain in the elderly is often undertreated, which may be due to the increased risks associated with pharmacotherapy in this group.

10. Which of the following statement concerning the assessment of cancer pain is least likely: (A) A high pain prevalence of 50-70% among patients with newly diagnosed cancer. (B) Bone metastases are the most common cause of chronic pain in cancer patients. (C) The vertebrae are the most common sites of bony metastases. (D) Epidural compression of the spinal cord is the second most common neurological complications of cancer. (E) The cause of under-treatment of cancer pain is inadequate assessment.

11. Which of the following is the unacceptable statement about postoperative pain related to acute pain mechanisms? (A) A decrease in the nociceptor threshold is due to changes in the transducers themselves (autosensitization). (B) An increase in the excitability of the terminal membrane is initiated by sensitizing agents (heterosensitization). (C) Enhanced responsiveness of central pain transmission neurons is due to wind-up. (D) Enhanced responsiveness of central pain transmission neurons is due to facilitated synaptic responses. (E) Enhanced responsiveness of central pain transmission neurons is due to increase inhibition.

12. Which of the following statement concerning the epidemiology of pain is least likely? (A) In adult, the most common regional pain syndromes are those of low back, hip and shoulder pain. (B) Higher prevalence rates are noted in women who report more severe and persistent pain. (C) Abdominal pain predominates at older ages, while oral and facial pain among young adults. (D) Social disadvantages also characterize persons at increased risk of pain. (E) Mechanical factors are important in the development of back pain and extremity pain.

13. 下列關於 placebo analgesia 的敘述何者錯誤? (A) 暗示、建議、期待、或制約(conditioning)都是增強 placebo analgesia 的重要因素。 (B) 與 placebo analgesia有關的生理結構可能是1 有關的生理結構可能是limbic system(包括amygdala, ventral striatum, anterior cingulate,和prefrontal cortex)。 (C) 在不同疼痛模型,出現Placebo effect 比率的人數(responder)不同；在拔牙後疼痛實驗佔 20%,在止血帶誘發疼痛低於10%。 (D) 不同疼痛模型,placebo analgesia 在VAS的強度也不同；如拔牙後疼痛實驗 responder 與 non-responder 可以相差到5分。 (E) Nocebo 與 placebo相反,是指經過治療(處理)後,結果反而無效或是疼痛加劇；例如利 用暗示,使原本有效的N2O拔牙止痛,變得更痛。