BMJ open · 2022
Inpatient hospitalisation and mortality rate trends from 2004 to 2014 in the USA: a propensity score-matched case-control study of hyperkalaemia.
СтатьяНаблюдательное исследованиеПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Tecson Kristen Michelle, Baker Rebecca A, Clariday Laura, McCullough Peter A
Аннотация
OBJECTIVE: To study the trends of hyperkalaemia in USA inpatient hospitalisation records with heart failure (HF), chronic kidney disease (CKD), acute kidney injury (AKI) and/or type II diabetes mellitus (T2DM) from 2004 to 2014 with respect to prevalence and inpatient mortality.
DESIGN: Observational cross-sectional and propensity score-matched case-control study.
SETTING: The National Inpatient Sample (representing up to 97% of inpatient hospital discharge records in the USA) from 2004 to 2014 PARTICIPANTS: 120 513 483 (±2 312 391) adult inpatient hospitalisation records with HF, CKD/end-stage renal disease (ESRD), AKI and/or T2DM.
EXPOSURE: Hyperkalaemia, defined as the presence of an International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) code of '276.7' in any of the first 15 diagnostic codes.
PRIMARY AND SECONDARY OUTCOME MEASURES: The outcomes of interest are the annual rates of hyperkalaemia prevalence and inpatient mortality.
RESULTS: Among 120 513 483 (±2 312 391) adult inpatient hospitalisations with HF, CKD/ESRD, AKI and/or T2DM, we found a 28.9% relative increase of hyperkalaemia prevalence from 4.94% in 2004 to 6.37% in 2014 (p<0.001). Hyperkalaemia was associated with an average of 4 percentage points higher rate of inpatient mortality (1.71 post-matching, p<0.0001). Inpatient mortality rates decreased from 11.49%±0.17% to 6.43%±0.08% and 9.67%±0.13% to 5.05%±0.07% for matched cases with and without hyperkalaemia, respectively (p<0.001).
CONCLUSIONS: Hyperkalaemia prevalence increased over time and was associated with greater inpatient mortality, even after accounting for presentation characteristics. We detected a decreasing trend in inpatient mortality risk, regardless of hyperkalaemia presence.
DESIGN: Observational cross-sectional and propensity score-matched case-control study.
SETTING: The National Inpatient Sample (representing up to 97% of inpatient hospital discharge records in the USA) from 2004 to 2014 PARTICIPANTS: 120 513 483 (±2 312 391) adult inpatient hospitalisation records with HF, CKD/end-stage renal disease (ESRD), AKI and/or T2DM.
EXPOSURE: Hyperkalaemia, defined as the presence of an International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) code of '276.7' in any of the first 15 diagnostic codes.
PRIMARY AND SECONDARY OUTCOME MEASURES: The outcomes of interest are the annual rates of hyperkalaemia prevalence and inpatient mortality.
RESULTS: Among 120 513 483 (±2 312 391) adult inpatient hospitalisations with HF, CKD/ESRD, AKI and/or T2DM, we found a 28.9% relative increase of hyperkalaemia prevalence from 4.94% in 2004 to 6.37% in 2014 (p<0.001). Hyperkalaemia was associated with an average of 4 percentage points higher rate of inpatient mortality (1.71 post-matching, p<0.0001). Inpatient mortality rates decreased from 11.49%±0.17% to 6.43%±0.08% and 9.67%±0.13% to 5.05%±0.07% for matched cases with and without hyperkalaemia, respectively (p<0.001).
CONCLUSIONS: Hyperkalaemia prevalence increased over time and was associated with greater inpatient mortality, even after accounting for presentation characteristics. We detected a decreasing trend in inpatient mortality risk, regardless of hyperkalaemia presence.