Table 3.

Mean [min–max] observed retinal blood flow (arbitrary units, AU), measured as mean flow, systole, diastole and pulsation after administration of placebo or pentoxifylline (Ptx) 300 mg intravenous infusion alone or in combination with a ciprofloxacin (PtxC) 750-mg tablet or pretreatment with rifampicin (PtxR) 600-mg tablets once daily for 7 days

		Mean flow AU	Systole AU	Diastole AU	Pulsation
Observations	Placebo	252	339	169	0.50
		[140–472]	[173–614]	[73–395]	[0.23–0.72]
	Ptx	260	343	183	0.46
		[158–504]	[197–651]	[80–431]	[0.21–0.74]
	PtxC	248	328	172	0.47
		[118–467]	[204–597]	[73–387]	[0.17–0.71]
	PtxR	265	344	188	0.45
		[170–452]	[221–606]	[81–358]	[0.16–0.70]
Geometric least-square estimates	Placebo	238	322	157	0.50
		(199, 284)	(272, 380)	(129, 191)	(0.45, 0.55)
	Ptx	249	331	172	0.46
		(208, 298)	(280, 390)	(142, 209)	(0.42, 0.50)
	PtxC	239	318	165	0.46
		(200, 285)	(270, 376)	(136, 200)	(0.42, 0.51)
	PtxR	250	327	176	0.47
		(209, 299)	(277, 386)	(145, 213)	(0.41, 0.49)
Arithmetic least-square estimates	Placebo	245	331	164	0.50
		(194, 297)	(271, 391)	(123, 205)	(0.46, 0.55)
	Ptx	259	342	181	0.47
		(207, 310)	(282, 401)	(140, 222)	(0.439, 0.51)
	PtxC	247	328	172	0.47
		(195, 298)	(268, 388)	(131, 213)	(0.43, 0.51)
	PtxR	256	332	182	0.45
		(204, 307)	(273, 392)	(141, 223)	(0.41, 0.50)

Geometric and arithmetic least-square estimates of means (95% confidence intervals) of retinal blood flow, measured as mean flow, systole, diastole and pulsation after administration of placebo or pentoxifylline 300 mg intravenous infusion alone or in combination with a ciprofloxacin 750-mg tablet or pretreatment with rifampicin 600-mg tablets once daily for 7 days.