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Table 2 Slope and constant as per Δp = k × Qn

From: Effect of guidewire on contribution of loss due to momentum change and viscous loss to the translesional pressure drop across coronary artery stenosis: An analytical approach

Area stenosis   Without GW With GW Without GW With GW Without GW With GW
  l m 1.5 3.00 4.50
64% n 1.6191 1.4145 1.5263 1.3168 1.4530 1.2523
  k 0.0001 0.0039 0.0017 0.0076 0.0028 0.0123
  l m 0.75 1.5 2.25
80% n 1.7276 1.5130 1.6592 1.4206 1.5997 1.3538
  k 0.0020 0.0081 0.0030 0.0142 0.0042 0.0217
  l m 0.25 0.50 0.75
90% n 1.7653 1.5292 1.7244 1.4478 1.6862 1.3926
  k 0.0070 0.0314 0.0086 0.0477 0.0103 0.0647