One year period prevalence study of respiratory acidosis in acute exacerbations of COPD: implications for the provision of non-invasive ventilation and oxygen administration

P K Plant; J L Owen; M W Elliott

doi:10.1136/thorax.55.7.550

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Original article

One year period prevalence study of respiratory acidosis in acute exacerbations of COPD: implications for the provision of non-invasive ventilation and oxygen administration

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Online download statistics by month: June 2000 to March 2024

	Abstract	Full	Pdf
Jun 2000	97	98	43
Jul 2000	81	79	29
Aug 2000	37	42	19
Sep 2000	19	31	21
Oct 2000	14	37	19
Nov 2000	13	29	27
Dec 2000	16	25	12
Jan 2001	23	21	14
Feb 2001	13	20	11
Mar 2001	18	42	9
Apr 2001	17	45	7
May 2001	10	26	4
Jun 2001	17	36	6
Jul 2001	10	27	6
Aug 2001	9	35	10
Sep 2001	6	17	6
Oct 2001	9	47	11
Nov 2001	12	35	9
Dec 2001	6	27	10
Jan 2002	8	19	7
Feb 2002	8	33	12
Mar 2002	20	27	22
Apr 2002	18	26	3
May 2002	7	20	9
Jun 2002	64	80	25
Jul 2002	37	24	8
Aug 2002	18	30	17
Sep 2002	16	44	24
Oct 2002	19	26	26
Nov 2002	19	35	21
Dec 2002	15	24	14
Jan 2003	19	35	34
Feb 2003	20	33	46
Mar 2003	17	39	20
Apr 2003	40	35	16
May 2003	24	51	26
Jun 2003	28	30	42
Jul 2003	32	48	33
Aug 2003	25	30	16
Sep 2003	32	44	11
Oct 2003	49	67	20
Nov 2003	51	80	46
Dec 2003	30	63	29
Jan 2004	53	66	25
Feb 2004	34	49	30
Mar 2004	46	63	35
Apr 2004	55	106	43
May 2004	58	101	33
Jun 2004	72	80	37
Jul 2004	67	94	18
Aug 2004	51	75	19
Sep 2004	54	66	29
Oct 2004	47	79	53
Nov 2004	42	72	51
Dec 2004	31	63	22
Jan 2005	42	82	42
Feb 2005	48	92	37
Mar 2005	62	70	50
Apr 2005	43	73	30
May 2005	45	50	37
Jun 2005	25	41	23
Jul 2005	37	61	34
Aug 2005	40	36	28
Sep 2005	49	45	36
Oct 2005	49	40	42
Nov 2005	87	72	63
Dec 2005	45	40	33
Jan 2006	43	63	35
Feb 2006	45	100	44
Mar 2006	28	97	38
Apr 2006	36	71	38
May 2006	65	45	39
Jun 2006	41	22	18
Jul 2006	60	40	40
Aug 2006	59	40	35
Sep 2006	66	70	50
Oct 2006	84	72	53
Nov 2006	98	47	57
Dec 2006	51	27	26
Jan 2007	93	37	53
Feb 2007	96	37	47
Mar 2007	108	63	71
Apr 2007	96	15	19
May 2007	71	40	41
Jun 2007	37	14	13
Jul 2007	39	10	14
Aug 2007	38	14	13
Sep 2007	57	8	20
Oct 2007	76	6	18
Nov 2007	96	33	34
Dec 2007	70	14	21
Jan 2008	74	14	21
Feb 2008	79	24	27
Mar 2008	105	16	29
Apr 2008	99	24	35
May 2008	39	5	25
Jun 2008	28	7	14
Jul 2008	38	16	19
Aug 2008	35	14	18
Sep 2008	64	14	16
Oct 2008	64	13	21
Nov 2008	70	20	38
Dec 2008	56	17	13
Jan 2009	73	12	19
Feb 2009	80	19	28
Mar 2009	160	21	46
Apr 2009	92	31	36
May 2009	90	15	28
Jun 2009	66	10	20
Jul 2009	74	7	5
Aug 2009	53	8	12
Sep 2009	87	7	15
Oct 2009	94	8	20
Nov 2009	98	22	35
Dec 2009	56	3	11
Jan 2010	75	12	16
Feb 2010	57	9	19
Mar 2010	146	19	20
Apr 2010	100	17	19
May 2010	87	29	23
Jun 2010	66	11	16
Jul 2010	61	12	9
Aug 2010	39	9	9
Sep 2010	52	18	14
Oct 2010	88	19	22
Nov 2010	69	23	21
Dec 2010	48	16	17
Jan 2011	52	24	13
Feb 2011	52	24	24
Mar 2011	68	28	23
Apr 2011	72	11	8
May 2011	50	8	18
Jun 2011	34	8	8
Jul 2011	54	5	8
Aug 2011	46	8	10
Sep 2011	59	10	9
Oct 2011	65	7	11
Nov 2011	82	28	20
Dec 2011	44	36	17
Jan 2012	65	32	27
Feb 2012	47	30	15
Mar 2012	55	35	23
Apr 2012	81	33	33
May 2012	75	38	35
Jun 2012	49	23	24
Jul 2012	69	50	27
Aug 2012	54	54	25
Sep 2012	54	36	19
Oct 2012	96	64	32
Nov 2012	125	46	50
Dec 2012	73	35	35
Jan 2013	70	34	30
Feb 2013	66	53	26
Mar 2013	73	67	42
Apr 2013	113	59	42
May 2013	94	55	43
Jun 2013	67	30	17
Jul 2013	46	26	13
Aug 2013	53	25	7
Sep 2013	61	32	12
Oct 2013	73	55	39
Nov 2013	66	41	32
Dec 2013	46	30	20
Jan 2014	59	29	29
Feb 2014	65	45	15
Mar 2014	71	53	27
Apr 2014	78	59	33
May 2014	77	45	17
Jun 2014	60	36	20
Jul 2014	81	20	16
Aug 2014	68	43	23
Sep 2014	87	27	14
Oct 2014	82	15	23
Nov 2014	52	15	15
Dec 2014	47	10	14
Jan 2015	82	33	22
Feb 2015	86	27	19
Mar 2015	74	41	38
Apr 2015	88	32	22
May 2015	75	24	12
Jun 2015	35	23	12
Jul 2015	49	21	13
Aug 2015	51	15	7
Sep 2015	72	20	12
Oct 2015	16	14	7
Nov 2015	59	46	16
Dec 2015	29	16	9
Jan 2016	89	34	19
Feb 2016	47	17	12
Mar 2016	68	33	22
Apr 2016	91	47	34
May 2016	132	51	26
Jun 2016	68	25	29
Jul 2016	25	13	26
Aug 2016	54	14	20
Sep 2016	83	27	15
Oct 2016	71	43	19
Nov 2016	81	47	26
Dec 2016	51	30	10
Jan 2017	68	31	17
Feb 2017	66	39	22
Mar 2017	60	42	25
Apr 2017	55	84	32
May 2017	39	78	14
Jun 2017	54	60	25
Jul 2017	65	44	19
Aug 2017	65	32	11
Sep 2017	172	80	31
Oct 2017	162	73	31
Nov 2017	158	76	30
Dec 2017	111	53	21
Jan 2018	125	51	61
Feb 2018	157	48	27
Mar 2018	121	41	37
Apr 2018	130	45	34
May 2018	125	55	104
Jun 2018	117	45	23
Jul 2018	109	35	16
Aug 2018	107	53	14
Sep 2018	134	58	29
Oct 2018	158	102	27
Nov 2018	182	102	18
Dec 2018	108	62	34
Jan 2019	116	61	17
Feb 2019	125	82	15
Mar 2019	137	75	42
Apr 2019	85	32	25
May 2019	98	55	34
Jun 2019	70	38	25
Jul 2019	75	38	30
Aug 2019	83	45	33
Sep 2019	74	55	23
Oct 2019	96	51	29
Nov 2019	91	47	24
Dec 2019	93	55	39
Jan 2020	134	82	32
Feb 2020	133	90	22
Mar 2020	72	58	27
Apr 2020	81	43	19
May 2020	78	59	21
Jun 2020	99	65	17
Jul 2020	62	37	40
Aug 2020	86	56	19
Sep 2020	152	120	18
Oct 2020	139	90	35
Nov 2020	112	51	25
Dec 2020	131	71	27
Jan 2021	100	54	30
Feb 2021	108	75	27
Mar 2021	210	62	45
Apr 2021	176	93	37
May 2021	116	88	40
Jun 2021	51	51	19
Jul 2021	54	54	26
Aug 2021	48	48	24
Sep 2021	75	76	43
Oct 2021	119	80	52
Nov 2021	122	70	49
Dec 2021	105	38	35
Jan 2022	132	70	48
Feb 2022	86	65	27
Mar 2022	183	125	63
Apr 2022	153	116	37
May 2022	182	134	72
Jun 2022	107	85	25
Jul 2022	83	53	19
Aug 2022	149	86	33
Sep 2022	150	94	24
Oct 2022	161	89	31
Nov 2022	142	76	25
Dec 2022	121	94	24
Jan 2023	127	87	36
Feb 2023	172	118	30
Mar 2023	230	120	63
Apr 2023	227	119	38
May 2023	93	54	26
Jun 2023	116	74	16
Jul 2023	90	62	18
Aug 2023	276	193	27
Sep 2023	124	91	17
Oct 2023	122	83	21
Nov 2023	230	158	27
Dec 2023	266	192	15
Jan 2024	136	136	12
Feb 2024	98	94	18
Mar 2024	181	121	119
Total	21683	13497	7451

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