New Mexico Heat Stress Hospitalizations by Year, Age-adjusted Rates, 2000 to 2022
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Why Is This Important?
Temperatures in New Mexico are expected to continue to rise, with a higher average temperature as well as more episodes of extreme heat and heat waves. As temperatures increase, the public health concern is heat-related illness. Anyone, regardless of age, sex, or health status, may develop heat-related illness if they are engaged in intense physical activity and/or exposed to environmental heat. The normal body temperature for most people is around 37 degrees Celsius (98.6 degrees Fahrenheit). When core body temperature rises, the body's response is to sweat and circulate blood closer to the skin surface to increase cooling. If heat exposure exceeds our capacity to cool and the core body temperature continues to rise, then a range of heat-related adverse health effects can develop. Although some of these signs and symptoms, such as heat-related cramps, fainting (syncope), and mild swelling (edema) are relatively minor and readily treatable, they should be used as important warning signs to immediately get the person out of the heat. Heat exhaustion symptoms include mild disorientation, fatigue, weakness, nausea, vomiting, headache, rapid heartbeat (tachycardia), and low blood pressure (hypotension) that may progress to heat stroke if untreated. Heat stroke is the most serious form of heat-related disease, which if untreated can result in death or permanent neurological impairment. The New Mexico Environmental Public Health Tracking Program (NM EPHT) develops, monitors, and analyzes indicators of heat stress to document changes in morbidity and mortality over place and time due to heat. EPHT also monitors vulnerable areas in New Mexico communities and informs and evaluates the results of local climate-adaptation strategies and extreme heat warning systems. One of the heat-related indicators EPHT monitors are hospitalizations due to heat stress.
Definition
Heat stress or heat-related illness ranges from mild heat edema and rash, heat syncope, heat cramps, to the most common type, heat exhaustion. Heat-related cramps, rash, and edema are relatively minor, readily treatable conditions. However, they should be used as important warning signs to immediately remove the person from the heat. Untreated heat exhaustion can progress to heat stroke, the most serious form of heat-related illness. Heat stroke is an extreme medical emergency that if untreated can result in death or permanent neurological impairment.
Data Notes
Rates have been age-adjusted using the direct method and the 2000 U.S. standard population. For more information on age-adjustment, please visit [https://ibis.doh.nm.gov/resource/AARate.html the NM-IBIS page on age-adjustment].Data Sources
- New Mexico Population Estimates: University of New Mexico, Geospatial and Population Studies (GPS) Program.
(http://gps.unm.edu/) - Hospital Inpatient Discharge Data, New Mexico Department of Health.
How the Measure is Calculated
Numerator:
New Mexico resident hospitalizations between April 1 through September 30 having ICD-9-C 992 or external causes of injury and poisoning (E-code) E900.0 or E900.9 excluding E-code E900.1 (man-made source of heat) anywhere in the record. For data 2016 to present, ICD-10-CM T67, X30, or X32 excluding W92 (not of natural origin) anywhere in the record.Denominator:
Midyear New Mexico resident population.
Data Issues
New Mexico Population Estimates
{{class RedText NOTE: On January 16, 2025, the NM-IBIS and NMTracking POPULATION ESTIMATES FOR YEARS **2010 THROUGH 2023** WERE REPLACED. Data from the 2020 decennial census were used to update the estimates. Rates calculated using the NM-IBIS and NMTracking web-based queries are affected. Any rates that use population denominators that were calculated after January 16, 2025 will be different from those calculated prior to that date. We apologize for the inconvenience.}} All population estimates apply to July 1 of the selected year. These estimates are considered the most accurate estimates for the state of New Mexico and should match those found on the University of New Mexico [https://gps.unm.edu/pop/population-estimates.html Geospatial and Population Studies website]. Estimates include decimal fractions. Census tract population estimates were summed to produce County estimates. Population estimate totals may vary slightly due to rounding.
Hospital Inpatient Discharge Data (HIDD)
The hospital inpatient discharge data include visits to NON-FEDERAL HOSPITALS only. Visits to Veteran's Administration (VA) facilities and Indian Health Service (IHS) facilities have not been included, unless specifically stated otherwise. Results from this query should not be used to make population inferences for New Mexico's American Indian populations. The data include all hospital visits. Persons with multiple hospital visits will be counted multiple times. By default, these query results include records for in-hospital deaths. Users wishing to query only non-fatal hospitalizations should filter the data to include all discharge statuses OTHER than **EXPIRED**. Transfer visits have not been removed from the dataset. Patients who were transferred from one facility to another will have data records at each facility. For inpatient visits with a diagnosis of "childbirth", data records for mothers have been included, but the data records for newborns have excluded from the HIDD queries. The ICD coding system, maintained by the World Health Organization and the U.S. National Center for Health Statistics, is used to classify diagnoses for hospital and emergency department visits. This coding system underwent a major revision from version 9 to version 10 that went into effect October 1, 2015. In most cases, the two versions do not provide comparable results, and the two time periods should not be combined in a single query. The hospital inpatient dataset includes only New Mexico residents hospitalized in New Mexico hospitals and do not include visits for New Mexico residents who visited a hospital in another state. In cases of serious injuries near the state borders, oftentimes patients will be transported to a nearby trauma center in the bordering state.