A reply

I . GROUNDS RM, MOORE M, MORGAN M. The relative potencies of thiopentone and propofol. European Journal of’ Anuesrhesiolugy 1986; 3: 11-17. 2. DUNDEE JW, ROBINSON FP, MCCOLLUM JSC, PA~TERSON CC. Sensitivity to prupofol in the elderly. Anuesthesia 1986: 41: 482-5. 3. D U N D E ~ JW, HASSARD TH, MCGOWAN WAW. HENSHAW J. The ‘induction’ dose of thiopentone. A method of study and preliminary illustrative results. Anaesthesia 1982; 37: I 176-84. 4. SELTZER JL, GERWN J1. ALLEN FB. Comparison of the cardiovascular effects of bolus v. incremental administration of thiopentone. Brirish Journal ofAnaesthesia 1980; 52: 521 30.