Table 1

Twenty nine cases of sensorineural hearing loss after general anaesthetic after distant site surgery and non-cardiopulmonary surgery

Study	No	Surgery	Nitrous oxide used ?	Hearing improved ?
Patterson and Barlett (1979)⁹	1	Bunionectomy and arthroplasty	Yes	Yes
Tonkin and Fagan (1975)22	2	Pyloroplasty and vagotomy	N/A	No
Hockermann and Reimer (1989)17	3	Rectal prolapse	Yes	Yes
Journeaux et al(1990)⁷	4	Adrenalectomy	Yes	N/A
Millenet al(1982)⁵	5	Mastectomy	N/A	Yes
Millenet al(1982)⁵	6	Cholecystectomy	N/A	Yes
Millenet al(1982)⁵	7	Pupilloplasty	N/A	N/A
Jaffe (1967)23	8	Thyroidectomy	N/A	N/A
Jaffe (1967)23	9	Lysis of small bowel adhesions	N/A	N/A
Jaffe (1967)23	10	Cardiac pacemaker implantation	N/A	N/A
Jaffe (1967)23	11	Abdominal (unknown)	N/A	N/A
Segal et al(1984)12	12	Vagotomy and pyloroplasty	Yes	Yes
Segal et al(1984)12	13	Inguinal hernia	Yes	Yes
Segalet al (1984)12	14	Lumbar discectomy	Yes	N/A
Velazguez (1992)26	15	Small bowel resection	No	N/A
Evan et al(1997)18	16	Hemithyroidectomy	Yes	No
Evanet al (1997)18	17	Total abdominal hysterectomy	Yes	No
Davis et al (1979)24	18	N/A	Yes	N/A
Manet al(1980)25	19	Cholecystectomy	Yes	Yes
Guillemin et al(1988)⁶	20	Urethrotomy	No	No
Guilleminet al (1988)⁶	21	Bilateral hernia	Yes	No
Guillemin et al(1988)⁶	22	Gynaecological	Yes	No
Guilleminet al(1988)⁶	23	Gynaecological	Yes	No
Cox IIIet al(1997)19	24	Nasal	Yes	Yes
Cox IIIet al(1997)19	25	Spinal	No	No
Cox IIIet al(1997)19	26	Spinal	Yes	No
De la Cruzet al(1998)20	27	Orthopaedic	Yes	No
Belanet al(1994)21	28	Appendicectomy	No	Yes
Present case (1999)	29	Varicose vein surgery	Yes	Yes