Questioning the Role of Carotid Artery Ultrasound in Assessing Fluid Responsiveness in Critical Illness: A Systematic Review and Meta-Analysis

Table 2

US equipment for the included studies.

Study	Equipment	Probe	Frequency (MHz)
Barjaktarevic et al. [25]	LOGIQ e, GE Healthcare	Linear	—
Chowhan et al. [26]	IMAGIC Agile, Kontron Medical	Phase	—
Zhang et al. [27]	Mindray M9 Diagnostic, US	Linear	8–12
Abbasi et al. [28]	Sonosite edge ultrasound	Linear	6–13
Abassi et al. [29]	Sonosite edge ultrasound	Linear	6–13
Lu et al. [30]	Sonosite	—	12
Marik et al. [9]	LOGIQ e; GE Healthcare	Linear	7–12
Soliman et al. [31]	GE LOGIQ™ P9- South Korea, FUJIFILM SonoSite M-Turbo®- Malaysia	Linear	5–10
Jelic et al. [32]	—	—	—
Effat et al. [33]	P4–2 siemens acuson ×300, siemens medical system	Linear	—
McGregor et al. [34]	Sonosite EDGE	—	—
Girotto et al. [35]	CX50 (Philips Healthcare)	Linear	5–12
Ibarra-Estrada et al. [36]	Sonosite micromaxx system	Linear	5–10
Pace et al. [37]	MyLab60	Linar	5–10
Helmy et al. [38]	Phillips HD11 XE	Phased	2.5
Jalil et al. [39]	FujuFilm sonosite	Linear	—