Deprecated: Return type of DrupalCacheArray::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/rprlib/prod72/www/includes/bootstrap.inc on line 362
Deprecated: Return type of DrupalCacheArray::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/rprlib/prod72/www/includes/bootstrap.inc on line 369
Deprecated: Return type of DrupalCacheArray::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/rprlib/prod72/www/includes/bootstrap.inc on line 381
Deprecated: Return type of DrupalCacheArray::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/rprlib/prod72/www/includes/bootstrap.inc on line 388 University of Oklahoma Health Sciences Center
Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in drupal_environment_initialize() (line 695 of /home/rprlib/prod72/www/includes/bootstrap.inc).
Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in drupal_environment_initialize() (line 696 of /home/rprlib/prod72/www/includes/bootstrap.inc).
Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in drupal_environment_initialize() (line 697 of /home/rprlib/prod72/www/includes/bootstrap.inc).
Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in drupal_environment_initialize() (line 700 of /home/rprlib/prod72/www/includes/bootstrap.inc).
Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in drupal_environment_initialize() (line 702 of /home/rprlib/prod72/www/includes/bootstrap.inc).
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Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in include_once() (line 329 of /home/rprlib/prod72/www/sites/default/settings.php).
Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in include_once() (line 337 of /home/rprlib/prod72/www/sites/default/settings.php).
Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in include_once() (line 344 of /home/rprlib/prod72/www/sites/default/settings.php).
Warning: ini_set(): Session ini settings cannot be changed after headers have already been sent in drupal_settings_initialize() (line 819 of /home/rprlib/prod72/www/includes/bootstrap.inc).
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Warning: session_name(): Session name cannot be changed after headers have already been sent in drupal_settings_initialize() (line 831 of /home/rprlib/prod72/www/includes/bootstrap.inc).
Deprecated function: Return type of DatabaseStatementBase::execute($args = [], $options = []) should either be compatible with PDOStatement::execute(?array $params = null): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2244 of /home/rprlib/prod72/www/includes/database/database.inc).
Deprecated function: Return type of DatabaseStatementEmpty::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/rprlib/prod72/www/includes/database/database.inc).
Deprecated function: Return type of DatabaseStatementEmpty::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/rprlib/prod72/www/includes/database/database.inc).
Deprecated function: Return type of DatabaseStatementEmpty::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/rprlib/prod72/www/includes/database/database.inc).
Deprecated function: Return type of DatabaseStatementEmpty::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/rprlib/prod72/www/includes/database/database.inc).
Deprecated function: Return type of DatabaseStatementEmpty::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2346 of /home/rprlib/prod72/www/includes/database/database.inc).
People traveling to high altitude are at risk of developing acute altitude illnesses, including AMS, HACE, and HAPE. Incidence and risk are assessed by history of acute altitude illness, sleeping elevation above sea level on day 1 of travel, and rate of ascent. AMS incidence can range from approximately 3% in persons traveling to 2000 m (6561 ft) to 25% to 40% at altitudes above 4300 m (14 107 ft), with symptoms varying from mild to marked.3 While rare, HACE and HAPE are potentially life-threatening if untreated.
