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TMP reflects pressure differences between blood and dialysate compartments. A rising TMP indicates increased resistance across the membrane, commonly due to clotting or fouling of the dialyzer. This can compromise clearance and circuit safety. Improved clearance (B) does not cause rising TMP. A steady increase is not normal (C). Air detector (D) is unrelated to TMP. The technician must notify the RN and may prepare for a dialyzer change if ordered.

Lab values like URR or Kt/V are used to measure adequacy. CCHTs should reinforce importance of adherence but cannot interpret results. Referring to RN/provider ensures correct clinical explanation. Options (B, C, D) are inappropriate.

Metallic taste and chest pain suggest dialysate contamination, often from chlorine or aluminum. Treatment must be stopped, machine placed in bypass, and RN notified. Hypoglycemia (B) and hypocalcemia (C) present differently. Hyperkalemia (D) does not cause metallic taste.

Air embolism presents with sudden dyspnea, chest pain, confusion, and collapse. The CCHT must clamp venous line, stop pump, position patient left Trendelenburg, and notify RN. Hypoglycemia (B) and hyperkalemia (C) present differently. Hypotension (D) is more gradual.

Chlorine/chloramine is tested with specific kits at designated points (post-carbon). Conductivity (B) measures ionic concentration, not chlorine. Residual disinfectant (C) checks for sterilant. TMP (D) measures pressures, unrelated to water safety.