Atrial Transport: Pressure Recording
Report:
Ectopic tachycardia (unspecified, possibly aberrant NPJT or VT) 120/min.
Sinus tachycardia 100/min.
Comment:
The nature of the faster rhythm is difficult to establish on this diagnostically unfavourable strip. A similar run shown below on this page is consistent with aberrant nonparoxysmal junctional or ventricular tachycardia and AV dissociation.
The relatively slow tachycardia is interrupted by an early beat, possibly a junctional (or VT) beat without the previously masked 2:1 exit block. At any rate, this allows a sinus capture (note the diagnostic importance of a narrow capture beat!) and, one cycle later, increase in the aortic root pressure. Appropriately timed atrial systole may contribute 20-25% to the ventricular filling.
Ventricular systole coincides with the T wave on the ECG.
221. 63 year old binge drinker presenting with abdominal distension and 3-day history of vomiting. The biochemical profile includes Na 126, K 3.4, creatinine 385, urea 32, bilirubin 14, albumin 35, GGT 60, ALT 54, ALP 103, amylase 102, lipase 265, Ca 0.67, Mg 1.06. With FIO2 0.28, PO2 is 57, PCO2 37 and pH 7.45. CXR is clear. He is admitted to CCU. Why?
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