<prompt> Clinical finding in AV fistula is one of the following:PericarditisSinus tachycardiaCardiac arrhythmiaHypothermia  <response>: Answer is B Sinus tachycardia AV fistulas cause sho circuiting of blood from an aery to a vein thereby increasing the pulse rate sinus tachycardia cardiac output. Sinus tachycardia : It is a regular rhythm with SA node discharging in excess of 100 times minute usually 100-160min Common causes include: Physiological high igh altitude Exercise Excitement Pregnancy Pain Pathological Thyrotoxicosis Anxiety states Fever and infections Cardiac failure Pulmonary embolism AV fistulae. 