PMID- 29374607 OWN - NLM STAT- MEDLINE DCOM- 20180521 LR - 20180521 IS - 1878-8769 (Electronic) IS - 1878-8750 (Linking) VI - 112 DP - 2018 Apr TI - Incidence, Comorbidities, and Mortality in Idiopathic Normal Pressure Hydrocephalus. PG - e624-e631 LID - S1878-8750(18)30150-5 [pii] LID - 10.1016/j.wneu.2018.01.107 [doi] AB - OBJECT: To investigate the incidence, comorbidities, mortality, and causes of death in idiopathic normal pressure hydrocephalus (iNPH). METHODS: A cohort of 536 patients with possible NPH from a defined population with a median follow-up time of 5.1 years, (range 0.04-19.9 years) was included in the study. Patients were evaluated by brain imaging and intraventricular pressure monitoring, with a brain biopsy specimen immunostained against amyloid-beta and hyperphosphorylated tau. Hospital records were reviewed for vascular diseases and type 2 diabetes mellitus (T2DM). Death certificates and yearly population of the catchment area were obtained from national registries. RESULTS: A total of 283 patients had a clinical diagnosis of iNPH, leading to a median annual incidence of 1.58 iNPH patients per 100,000 inhabitants (range, 0.8-4.5). Alzeimer disease-related brain biopsy findings were less frequent in iNPH patients than in non-iNPH patients (P < 0.05). An overrepresentation of hypertension (52% vs. 33%, P < 0.001) and T2DM (23% vs. 13%, P = 0.002) was noted in iNPH patients. Age (hazard ratio [HR] 1.04/year, 95% confidence interval [CI] 1.03-1.06, P < 0.001) and T2DM (HR 1.63, 95% CI 1.23-2.16, P < 0.001) increased the risk of death in the iNPH patients and in the total population. iNPH was associated with decreased risk of death (HR 0.63, 95% CI 0.50-0.78, P < 0.001). The most frequent causes of death were cardiovascular and cerebrovascular disease. Dementia as a cause of death was more common in non-iNPH patients (27% vs. 10%, P < 0.001). CONCLUSIONS: Hypertension and T2DM are common in iNPH and the latter causes excess mortality in the affected patients. CI - Copyright (c) 2018 Elsevier Inc. All rights reserved. FAU - Pyykko, Okko T AU - Pyykko OT AD - Neurosurgery of NeuroCenter, Kuopio University Hospital, Kuopio, Finland. Electronic address: okko.pyykko@phhyky.fi. FAU - Nerg, Ossi AU - Nerg O AD - Neurology of NeuroCenter, Kuopio University Hospital, and Institute of Clinical Medicine - Neurology, University of Eastern Finland, Kuopio, Finland. FAU - Niskasaari, Hanna-Mari AU - Niskasaari HM AD - Neurosurgery of NeuroCenter, Kuopio University Hospital, Kuopio, Finland. FAU - Niskasaari, Timo AU - Niskasaari T AD - Neurosurgery of NeuroCenter, Kuopio University Hospital, Kuopio, Finland. FAU - Koivisto, Anne M AU - Koivisto AM AD - Neurology of NeuroCenter, Kuopio University Hospital, and Institute of Clinical Medicine - Neurology, University of Eastern Finland, Kuopio, Finland. FAU - Hiltunen, Mikko AU - Hiltunen M AD - Institute of Biomedicine, University of Eastern Finland, Department of Neurology, Kuopio University Hospital, Kuopio, Finland. FAU - Pihlajamaki, Jussi AU - Pihlajamaki J AD - Department of Clinical Nutrition, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, and Clinical Nutrition and Obesity Center, Kuopio University Hospital, Kuopio, Finland. FAU - Rauramaa, Tuomas AU - Rauramaa T AD - Department of Pathology, Kuopio University Hospital, and Institute of Clinical Medicine - Pathology, University of Eastern Finland, Kuopio, Finland. FAU - Kojoukhova, Maria AU - Kojoukhova M AD - Neurosurgery of NeuroCenter, Kuopio University Hospital, Kuopio, Finland. FAU - Alafuzoff, Irina AU - Alafuzoff I AD - Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden. FAU - Soininen, Hilkka AU - Soininen H AD - Neurology of NeuroCenter, Kuopio University Hospital, and Institute of Clinical Medicine - Neurology, University of Eastern Finland, Kuopio, Finland. FAU - Jaaskelainen, Juha E AU - Jaaskelainen JE AD - Neurosurgery of NeuroCenter, Kuopio University Hospital, Kuopio, Finland. FAU - Leinonen, Ville AU - Leinonen V AD - Neurosurgery of NeuroCenter, Kuopio University Hospital, Kuopio, Finland. LA - eng PT - Journal Article DEP - 20180131 PL - United States TA - World Neurosurg JT - World neurosurgery JID - 101528275 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Cardiovascular Diseases/*epidemiology MH - Comorbidity MH - Diabetes Mellitus, Type 2/*epidemiology MH - Female MH - Humans MH - Hydrocephalus, Normal Pressure/diagnostic imaging/*epidemiology/mortality MH - Incidence MH - Male MH - Middle Aged MH - Neuroimaging MH - Survival Rate OTO - NOTNLM OT - Cause of death OT - Comorbidity OT - Incidence OT - Mortality OT - Normal pressure hydrocephalus OT - Survival EDAT- 2018/01/29 06:00 MHDA- 2018/05/22 06:00 CRDT- 2018/01/29 06:00 PHST- 2017/11/05 00:00 [received] PHST- 2018/01/14 00:00 [revised] PHST- 2018/01/15 00:00 [accepted] PHST- 2018/01/29 06:00 [pubmed] PHST- 2018/05/22 06:00 [medline] PHST- 2018/01/29 06:00 [entrez] AID - S1878-8750(18)30150-5 [pii] AID - 10.1016/j.wneu.2018.01.107 [doi] PST - ppublish SO - World Neurosurg. 2018 Apr;112:e624-e631. doi: 10.1016/j.wneu.2018.01.107. Epub 2018 Jan 31.