Absolute contraindications for renal puncture needles

⑴ Absolute contraindications: ① Obvious bleeding tendency, ② Severe hypertension, ③ Mental illness or those who do not cooperate with the operator, ④ Isolated kidney, ⑤ Small kidney.

⑵ Relative contraindications: ① Active pyelonephritis, renal tuberculosis, hydronephrosis or empyema, renal abscess or peripheral abscess. ② Renal tumor or renal aneurysm. ③ Polycystic kidney or large kidney cyst. ④The position of the kidney is too high (the lower pole of the kidney does not reach under the twelve ribs after deep inhalation) or the kidney is wandering. ⑤ Chronic renal failure. ⑥ Obesity. ⑦ Severe ascites. ⑧Patients with heart failure, severe anemia, hypovolemia, pregnancy or old age.

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