Receiving Helpdesk

what is the difference between prvc and simv

by Dr. Herman Erdman Published 3 years ago Updated 2 years ago

SIMV indicates synchronized intermittent mandatory ventilation; PRVC, pressure-regulated volume control. Subjects in the PRVC group had higher ventilator rates but lower inspiratory tidal volumes and peak inspiratory pressures than subjects in the SIMV group.

The PRVC mode is better than the volume controlled SIMV mode in ventilating COPD patients with acute exacerbations and type II respiratory failure. The PRVC mode showed faster improvement, shorter ICU stay, fewer complications and lower peak inspiratory airway pressures.

Full Answer

What is the difference between SIMV and AC mode?

SIMV- Synchronised Intermittent Mandatory Ventilation Just as in AC mode, if the patient does not trigger a breath, the patient will receive a set volume/pressure breath, as in the first breath here. However in SIMV when a triggered breath is initiated the patient determines the volume, which may be smaller than the non triggered breath.

Is there a difference between PRVC and SIMV ventilators?

Subjects in the PRVC group had higher ventilator rates but lower inspiratory tidal volumes and peak inspiratory pressures than subjects in the SIMV group. However, minute ventilation did not differ between groups.

What is a PRVC PS servo?

SIMV: PRVC+PS. PC (Pressure Controlled Ventilation) servo i. In this controlled mode of ventilation, the ventilator delivers a breath to a set pressure, and at a set rate. This is primarily used when the patient has no spontaneous breathing but will support the patient if they are able to trigger a breath.

What is the difference between APRV and pcirv?

This unique mode of ventilation results in higher average airway pressures. Patients are able to spontaneously ventilate at both low and high pressures, although typically most (or all) ventilation occurs at the high pressure. In the absence of attempted breaths, APRV and PCIRV are identical.

What is SIMV PRVC mode?

SIMV: PRVC+PS. PC (Pressure Controlled Ventilation) servo i. In this controlled mode of ventilation, the ventilator delivers a breath to a set pressure, and at a set rate. This is primarily used when the patient has no spontaneous breathing but will support the patient if they are able to trigger a breath.

What is PRVC used for?

PRVC is a mechanical ventilation, lung-protective strategy used to meet acute respiratory distress syndrome (ARDS) management goals by maximizing alveolar recruitment, patient comfort, and patient-ventilator synchrony, while minimizing the risk of barotrauma or volutrauma.

What does PRVC stand for on a ventilator?

Pressure-regulated volume control (PRVC) is a mode of ventilation in which the ventilator attempts to achieve set tidal volume at lowest possible airway pressure. This mode of ventilation is being commonly used as the initial mode of ventilation in many intensive care units.

What is the difference between pressure control and PRVC?

Pressure-regulated volume control (PRVC) is a new mode of ventilation that combines the advantages of the decelerating inspiratory flow pattern of a pressure-control mode with the ease of use of a volume-control (VC) mode.

When should I use PRVC mode?

PRVC is an appropriate mode of ventilation for patients who require a specific tidal volume (VT) with the lowest effective pressure, such as those with acute respiratory distress syndrome (ARDS). In the PRVC mode, the ventilator delivers a volume-controlled breath.

What are the disadvantages of PRVC?

One disadvantage is, it takes a few MV breaths to reach to the set Vt. Therefore, if the patient is being suctioned a lot or patient coughs and fights with the ventilator, he/she will not be getting the set Vt.

Does PRVC have pressure support?

With a PRVC (or PCVG) breath, the ventilator computer is allowed to adjust applied pressure up or down based on whether the exhaled tidal volume is above target (applied pressure for next breath is decreased) or below target (applied pressure for next breath is increased) in an attempt to hold tidal volume constant.

Is APRV and PRVC the same?

Other pressure modes include pressure support ventilation (PSV), pressure-regulated volume control (PRVC, also known as volume control plus [VC+]), airway pressure release ventilation (APRV), and biphasic ventilation (also known as BiLevel).

How many types of ventilator modes are there?

There are five conventional modes: volume assist/control; pressure assist/control; pressure support ventilation; volume synchronized intermittent mandatory ventilation (SIMV); and pressure SIMV.

What is the difference between PEEP and pressure support?

We conclude that pressure support ventilation provides equally effective gas exchange as positive pressure ventilation during PLMA anaesthesia with or without PEEP at the tested settings. During pressure support, PEEP increases ventilation and reduces work on breathing without increasing leak fraction.

What are the two types of medical ventilation?

Positive-pressure ventilation: pushes the air into the lungs. Negative-pressure ventilation: sucks the air into the lungs by making the chest expand and contract.

What is mechanical ventilation?

Mechanical Ventilation is a modality commonly used in the critically ill, but many providers, may not have a strong understanding of the basics. Emergency Medicine and Critical Care Physicians need to have a firm grasp of the basic concepts of mechanical ventilation because without it, we can do serious harm to our patients. Airway management is not complete once the endotracheal tube is placed through the cords, and the proper selection of both the ventilator mode and initial settings is essential to ensure your patient has the best possible outcomes. You should not simply rely on the respiratory therapist to know your patients physiology. Clear communication with your therapist about the patient’s physiology and initial ventilator setting is crucial.

How often does a ventilator deliver a preset breath?

If you set the RR at 12 bpm, then every 5 seconds the ventilator will deliver a preset breath if your patient doesn’t trigger a breath (paralyzed, sedated or comatose). These breaths will be all controlled breaths.

What is APRV in CPAP?

Airway pressure release ventilation is similar to PCIRV – instead of being a variation of PCV in which the I:E ratio is reversed, APRV is a variation of CPAP that releases pressure temporarily on exhalation. This unique mode of ventilation results in higher average airway pressures. Patients are able to spontaneously ventilate at both low and high pressures, although typically most (or all) ventilation occurs at the high pressure. In the absence of attempted breaths, APRV and PCIRV are identical. As in PCIRV, hemodynamic compromise is a concern in APRV. Additionally, APRV typically requires increased sedation

What is PAV in ventilators?

During PAV, the clinician sets the percentage of work of breathing to be provided by the ventilator. PAV uses a positive feedback loop to accomplish this, which requires knowledge of resistance and elastance to properly attenuate the signal

What is inverse ratio ventilation?

Inverse Ratio Ventilation (IRV) is a subset of PCV in which inflation time is prolonged ( In IRV, 1:1 , 2:1, or 3:1 may be use . Normal I:E is 1:3). This lowers peak airway pressures but increases mean airway pressures. The result may be improved oxygenation but at the expense of compromised venous return and cardiac output, thus it is not clear that this mode of ventilation leads to improved survival. IRV’s major indication is in patients with ARDS with refractory hypoxemia or hypercapnia in other modes of ventilation [Am J Surg 183: 151, 2002]

What is positive pressure?

Positive pressure given throughout the cycle. It can be delivered through a mask and is can be used in obstructive sleep apnea (esp. with a nasal mask), to postpone intubation, or to treat acute exacerbations of COPD

What is pressure controlled ventilatory mode?

Pressure controlled ventilatory mode in which the majority of time is spent at the higher (inspiratory) pressure. Early trials were promising, however the risks of auto PEEP and hemodynamic deterioration due to the decreased expiratory time and increased mean airway pressure generally outweight the small potential for improved oxygenation

Volume Modes

Pressure Modes

  • Pressure-Controlled Ventilation
    Less risk of barotrauma as compared to ACV and SIMV. Does not allow for patient-initiated breaths. The inspiratory flow pattern decreases exponentially, reducing peak pressures and improving gas exchange [Chest 122: 2096, 2002]. The major disadvantage is that there are no g…
  • Pressure Support Ventilation
    Allows the patient to determine inflation volume and respiratory frequency (but not pressure, as this is pressure-controlled), thus can only be used to augment spontaneous breathing. Pressure support can be used to overcome the resistance of ventilator tubing in another cycle (5 – 10 cm …
See more on openanesthesia.org

Dual Modes

  • Pressure Regulated Volume Control
    A volume target backup is added to a pressure assist-control mode
See more on openanesthesia.org

Interactive Modes

  • Proportional Assist Ventilation
    During PAV, the clinician sets the percentage of work of breathing to be provided by the ventilator. PAV uses a positive feedback loopto accomplish this, which requires knowledge of resistance and elastance to properly attenuate the signal Compliance and resistance must therefore be periodi…
See more on openanesthesia.org

Addtional Modes, Strategies, Parameters

  • Inverse Ratio Ventilation
    Inverse Ratio Ventilation (IRV) is a subset of PCV in which inflation time is prolonged (In IRV, 1:1, 2:1, or 3:1 may be use. Normal I:E is 1:3). This lowers peak airway pressures but increases mean airway pressures. The result may be improved oxygenation but at the expense of compromised …
  • Adaptive Support Ventilation
    Calculates the expiratory time constant in order to guarantee sufficient expiratory time and thus minimize air trapping
See more on openanesthesia.org

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 1 2 3 4 5 6 7 8 9
8.3.21PHP Version5.82sRequest Duration2MBMemory UsageGET {post}Route
  • warninglog[16:38:02] LOG.warning: Creation of dynamic property Barryvdh\Debugbar\DataFormatter\QueryFormatter:...
  • warninglog[16:38:02] LOG.warning: Creation of dynamic property Barryvdh\Debugbar\DataFormatter\QueryFormatter:...
  • warninglog[16:38:02] LOG.warning: Callables of the form ["Swift_SmtpTransport", "Swift_Transport_EsmtpTranspor...
  • warninglog[16:38:02] LOG.warning: Creation of dynamic property Barryvdh\Debugbar\DataFormatter\SimpleFormatter...
  • warninglog[16:38:02] LOG.warning: Creation of dynamic property Barryvdh\Debugbar\DataFormatter\SimpleFormatter...
  • warninglog[16:38:02] LOG.warning: json_decode(): Passing null to parameter #1 ($json) of type string is deprec...
  • warninglog[16:38:02] LOG.warning: json_decode(): Passing null to parameter #1 ($json) of type string is deprec...
  • warninglog[16:38:02] LOG.warning: json_decode(): Passing null to parameter #1 ($json) of type string is deprec...
  • warninglog[16:38:02] LOG.warning: json_decode(): Passing null to parameter #1 ($json) of type string is deprec...
  • warninglog[16:38:02] LOG.warning: json_decode(): Passing null to parameter #1 ($json) of type string is deprec...
  • warninglog[16:38:02] LOG.warning: json_decode(): Passing null to parameter #1 ($json) of type string is deprec...
  • warninglog[16:38:02] LOG.warning: mt_rand(): Passing null to parameter #2 ($max) of type int is deprecated in ...
  • Booting (27.9ms)
  • Application (5.79s)
  • 1 x Application (99.5%)
    5.79s
    1 x Booting (0.48%)
    27.90ms
    7 templates were rendered
    • themes.DevBlog.content.post (resources/views/themes/DevBlog/content/post.blade.php)34blade
      Params
      0
      post
      1
      postContent
      2
      author
      3
      updated_at
      4
      bing_rich_snippet_text
      5
      bing_rich_snippet_link
      6
      bing_related_keywords
      7
      google_related_keywords
      8
      bing_news_title
      9
      bing_news_description
      10
      bing_videos
      11
      bing_images
      12
      bing_search_result_title
      13
      bing_search_result_description
      14
      bing_search_result_url
      15
      bing_paa_questions
      16
      bing_paa_answers
      17
      bing_slider_faq_questions
      18
      bing_slider_faq_answers
      19
      bing_pop_faq_questions
      20
      bing_pop_faq_answers
      21
      bing_tab_faq_questions
      22
      bing_tab_faq_answers
      23
      google_faq_questions
      24
      google_faq_answers
      25
      google_rich_snippet
      26
      google_search_result
      27
      indexedArray
      28
      total_images
      29
      total_videos
      30
      settings
      31
      url_current
      32
      menus
      33
      sidebar
    • themes.DevBlog.layouts.master (resources/views/themes/DevBlog/layouts/master.blade.php)41blade
      Params
      0
      __env
      1
      app
      2
      errors
      3
      post
      4
      postContent
      5
      author
      6
      updated_at
      7
      bing_rich_snippet_text
      8
      bing_rich_snippet_link
      9
      bing_related_keywords
      10
      google_related_keywords
      11
      bing_news_title
      12
      bing_news_description
      13
      bing_videos
      14
      bing_images
      15
      bing_search_result_title
      16
      bing_search_result_description
      17
      bing_search_result_url
      18
      bing_paa_questions
      19
      bing_paa_answers
      20
      bing_slider_faq_questions
      21
      bing_slider_faq_answers
      22
      bing_pop_faq_questions
      23
      bing_pop_faq_answers
      24
      bing_tab_faq_questions
      25
      bing_tab_faq_answers
      26
      google_faq_questions
      27
      google_faq_answers
      28
      google_rich_snippet
      29
      google_search_result
      30
      indexedArray
      31
      total_images
      32
      total_videos
      33
      settings
      34
      url_current
      35
      menus
      36
      sidebar
      37
      i
      38
      __currentLoopData
      39
      loop
      40
      item
    • themes.DevBlog.panels.head (resources/views/themes/DevBlog/panels/head.blade.php)41blade
      Params
      0
      __env
      1
      app
      2
      errors
      3
      post
      4
      postContent
      5
      author
      6
      updated_at
      7
      bing_rich_snippet_text
      8
      bing_rich_snippet_link
      9
      bing_related_keywords
      10
      google_related_keywords
      11
      bing_news_title
      12
      bing_news_description
      13
      bing_videos
      14
      bing_images
      15
      bing_search_result_title
      16
      bing_search_result_description
      17
      bing_search_result_url
      18
      bing_paa_questions
      19
      bing_paa_answers
      20
      bing_slider_faq_questions
      21
      bing_slider_faq_answers
      22
      bing_pop_faq_questions
      23
      bing_pop_faq_answers
      24
      bing_tab_faq_questions
      25
      bing_tab_faq_answers
      26
      google_faq_questions
      27
      google_faq_answers
      28
      google_rich_snippet
      29
      google_search_result
      30
      indexedArray
      31
      total_images
      32
      total_videos
      33
      settings
      34
      url_current
      35
      menus
      36
      sidebar
      37
      i
      38
      __currentLoopData
      39
      loop
      40
      item
    • themes.DevBlog.panels.header (resources/views/themes/DevBlog/panels/header.blade.php)41blade
      Params
      0
      __env
      1
      app
      2
      errors
      3
      post
      4
      postContent
      5
      author
      6
      updated_at
      7
      bing_rich_snippet_text
      8
      bing_rich_snippet_link
      9
      bing_related_keywords
      10
      google_related_keywords
      11
      bing_news_title
      12
      bing_news_description
      13
      bing_videos
      14
      bing_images
      15
      bing_search_result_title
      16
      bing_search_result_description
      17
      bing_search_result_url
      18
      bing_paa_questions
      19
      bing_paa_answers
      20
      bing_slider_faq_questions
      21
      bing_slider_faq_answers
      22
      bing_pop_faq_questions
      23
      bing_pop_faq_answers
      24
      bing_tab_faq_questions
      25
      bing_tab_faq_answers
      26
      google_faq_questions
      27
      google_faq_answers
      28
      google_rich_snippet
      29
      google_search_result
      30
      indexedArray
      31
      total_images
      32
      total_videos
      33
      settings
      34
      url_current
      35
      menus
      36
      sidebar
      37
      i
      38
      __currentLoopData
      39
      loop
      40
      item
    • themes.DevBlog.panels.navbar (resources/views/themes/DevBlog/panels/navbar.blade.php)41blade
      Params
      0
      __env
      1
      app
      2
      errors
      3
      post
      4
      postContent
      5
      author
      6
      updated_at
      7
      bing_rich_snippet_text
      8
      bing_rich_snippet_link
      9
      bing_related_keywords
      10
      google_related_keywords
      11
      bing_news_title
      12
      bing_news_description
      13
      bing_videos
      14
      bing_images
      15
      bing_search_result_title
      16
      bing_search_result_description
      17
      bing_search_result_url
      18
      bing_paa_questions
      19
      bing_paa_answers
      20
      bing_slider_faq_questions
      21
      bing_slider_faq_answers
      22
      bing_pop_faq_questions
      23
      bing_pop_faq_answers
      24
      bing_tab_faq_questions
      25
      bing_tab_faq_answers
      26
      google_faq_questions
      27
      google_faq_answers
      28
      google_rich_snippet
      29
      google_search_result
      30
      indexedArray
      31
      total_images
      32
      total_videos
      33
      settings
      34
      url_current
      35
      menus
      36
      sidebar
      37
      i
      38
      __currentLoopData
      39
      loop
      40
      item
    • themes.DevBlog.panels.footer (resources/views/themes/DevBlog/panels/footer.blade.php)41blade
      Params
      0
      __env
      1
      app
      2
      errors
      3
      post
      4
      postContent
      5
      author
      6
      updated_at
      7
      bing_rich_snippet_text
      8
      bing_rich_snippet_link
      9
      bing_related_keywords
      10
      google_related_keywords
      11
      bing_news_title
      12
      bing_news_description
      13
      bing_videos
      14
      bing_images
      15
      bing_search_result_title
      16
      bing_search_result_description
      17
      bing_search_result_url
      18
      bing_paa_questions
      19
      bing_paa_answers
      20
      bing_slider_faq_questions
      21
      bing_slider_faq_answers
      22
      bing_pop_faq_questions
      23
      bing_pop_faq_answers
      24
      bing_tab_faq_questions
      25
      bing_tab_faq_answers
      26
      google_faq_questions
      27
      google_faq_answers
      28
      google_rich_snippet
      29
      google_search_result
      30
      indexedArray
      31
      total_images
      32
      total_videos
      33
      settings
      34
      url_current
      35
      menus
      36
      sidebar
      37
      i
      38
      __currentLoopData
      39
      loop
      40
      item
    • themes.DevBlog.panels.scripts (resources/views/themes/DevBlog/panels/scripts.blade.php)41blade
      Params
      0
      __env
      1
      app
      2
      errors
      3
      post
      4
      postContent
      5
      author
      6
      updated_at
      7
      bing_rich_snippet_text
      8
      bing_rich_snippet_link
      9
      bing_related_keywords
      10
      google_related_keywords
      11
      bing_news_title
      12
      bing_news_description
      13
      bing_videos
      14
      bing_images
      15
      bing_search_result_title
      16
      bing_search_result_description
      17
      bing_search_result_url
      18
      bing_paa_questions
      19
      bing_paa_answers
      20
      bing_slider_faq_questions
      21
      bing_slider_faq_answers
      22
      bing_pop_faq_questions
      23
      bing_pop_faq_answers
      24
      bing_tab_faq_questions
      25
      bing_tab_faq_answers
      26
      google_faq_questions
      27
      google_faq_answers
      28
      google_rich_snippet
      29
      google_search_result
      30
      indexedArray
      31
      total_images
      32
      total_videos
      33
      settings
      34
      url_current
      35
      menus
      36
      sidebar
      37
      i
      38
      __currentLoopData
      39
      loop
      40
      item
    uri
    GET {post}
    middleware
    web, checkdate
    as
    post.show
    controller
    App\Http\Controllers\Frontend\json_data\PostController@show
    namespace
    where
    file
    app/Http/Controllers/Frontend/json_data/PostController.php:18-166
    7 statements were executed5.77s
    • select * from `posts` where `published_at` <= '2025-06-07 16:38:02' and `slug` = 'what-is-the-difference-between-prvc-and-simv' and `posts`.`deleted_at` is null limit 1
      4.39ms/app/Providers/RouteServiceProvider.php:54receivinghelpdeskask
      Metadata
      Bindings
      • 0. 2025-06-07 16:38:02
      • 1. what-is-the-difference-between-prvc-and-simv
      Backtrace
      • 15. /app/Providers/RouteServiceProvider.php:54
      • 18. /vendor/laravel/framework/src/Illuminate/Routing/Router.php:842
      • 19. Route binding:39
      • 20. /vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:167
      • 21. /vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php:78
    • select * from `json_post_contents` where `json_post_contents`.`post_id` = 167609 and `json_post_contents`.`post_id` is not null and `rewrite_id` = 0
      11.69msmiddleware::checkdate:30receivinghelpdeskask
      Metadata
      Bindings
      • 0. 167609
      • 1. 0
      Backtrace
      • 19. middleware::checkdate:30
      • 20. /vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:167
      • 21. /vendor/laravel/jetstream/src/Http/Middleware/ShareInertiaData.php:61
      • 22. /vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:167
      • 23. /vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php:50
    • select * from `nova_menu_menus` where `slug` = 'header' limit 1
      1.49ms/vendor/outl1ne/nova-menu-builder/src/helpers.php:32receivinghelpdeskask
      Metadata
      Bindings
      • 0. header
      Backtrace
      • 15. /vendor/outl1ne/nova-menu-builder/src/helpers.php:32
      • 17. /vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 18. /vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:45
      • 19. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:261
      • 20. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:205
    • select * from `nova_menu_menu_items` where `nova_menu_menu_items`.`menu_id` = 1 and `nova_menu_menu_items`.`menu_id` is not null and `parent_id` is null order by `parent_id` asc, `order` asc, `name` asc
      1.01ms/vendor/outl1ne/nova-menu-builder/src/Models/Menu.php:35receivinghelpdeskask
      Metadata
      Bindings
      • 0. 1
      Backtrace
      • 19. /vendor/outl1ne/nova-menu-builder/src/Models/Menu.php:35
      • 20. /vendor/outl1ne/nova-menu-builder/src/helpers.php:33
      • 22. /vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 23. /vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:45
      • 24. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:261
    • select * from `nova_menu_menu_items` where `nova_menu_menu_items`.`parent_id` in (1) order by `order` asc
      270μs/vendor/outl1ne/nova-menu-builder/src/Models/Menu.php:35receivinghelpdeskask
      Metadata
      Backtrace
      • 24. /vendor/outl1ne/nova-menu-builder/src/Models/Menu.php:35
      • 25. /vendor/outl1ne/nova-menu-builder/src/helpers.php:33
      • 27. /vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 28. /vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:45
      • 29. /vendor/laravel/framework/src/Illuminate/Routing/Route.php:261
    • select `id`, `post_title`, `slug` from `posts` where `status` = 'publish' and `posts`.`deleted_at` is null order by RAND() limit 10
      5.75s/app/View/Composers/SidebarView.php:22receivinghelpdeskask
      Metadata
      Bindings
      • 0. publish
      Backtrace
      • 14. /app/View/Composers/SidebarView.php:22
      • 15. /app/View/Composers/SidebarView.php:12
      • 16. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:124
      • 17. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:162
      • 20. /vendor/laravel/framework/src/Illuminate/View/Concerns/ManagesEvents.php:177
    • select * from `fake_users` where `fake_users`.`id` = 37890 limit 1
      840μsview::2dd102cf0462e89a4d4d8bc77355d767652bf9aa:15receivinghelpdeskask
      Metadata
      Bindings
      • 0. 37890
      Backtrace
      • 21. view::2dd102cf0462e89a4d4d8bc77355d767652bf9aa:15
      • 23. /vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:108
      • 24. /vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58
      • 25. /vendor/livewire/livewire/src/ComponentConcerns/RendersLivewireComponents.php:69
      • 26. /vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:61
    App\Models\FakeUser
    1
    Outl1ne\MenuBuilder\Models\MenuItem
    1
    Outl1ne\MenuBuilder\Models\Menu
    1
    App\Models\JsonPostContent
    1
    App\Models\Post
    11
        _token
        DwF7byTFtXA3xHWwEEmkeHIXVXSsNiEQaNH4I99d
        _previous
        array:1 [ "url" => "https://receivinghelpdesk.com/ask/what-is-the-difference-between-prvc-and-simv...
        _flash
        array:2 [ "old" => [] "new" => [] ]
        PHPDEBUGBAR_STACK_DATA
        []
        path_info
        /what-is-the-difference-between-prvc-and-simv
        status_code
        200
        
        status_text
        OK
        format
        html
        content_type
        text/html; charset=UTF-8
        request_query
        []
        
        request_request
        []
        
        request_headers
        0 of 0
        array:25 [ "cookie" => array:1 [ 0 => "_pk_id.63.7c30=2e62cc6bbd5a3ea5.1749294477.; _pk_ses.63.7c30=1; _pk_id.64.7c30=bf2ae09285e43e0f.1749294478.; _pk_ses.64.7c30=1; XSRF-TOKEN=eyJpdiI6IlV2MEVNL3lUanRNbFBWM01QTWlVRWc9PSIsInZhbHVlIjoiRHYzNnAxc2NoTnhyV1ZKdUVaVDVvVHdRZi9Zb21xMGFsb2RVUzVKRWZwLzVzYndGVE5aR0dGbjE2UytqeDh1QisxaVdTTHZaYS9aTzRiWGowTjV2eS9hbDRJV0h0ck5ENHRPTCsySzFjY0pBejl0UWtZSjlhaG1DVUdjYmhxNFoiLCJtYWMiOiJiN2UyYjUwN2ZhNDIyNGNjMTc2MjcyMTVhY2ZmNDgwMGVjZDNlNDdmNWQxYzAzM2JmNWQ0MWIzYzdhMjNkZjg1IiwidGFnIjoiIn0%3D; askhelpdesk_session=eyJpdiI6Im94UWt0WjQrNmlaZmxwN21MVzRhZGc9PSIsInZhbHVlIjoiZjNWcGlmUGx2M3JPTlRkTVFlRndxbDc5V3pWRFB6bmV0MDNiVmc0R3V1Z2xBRCtaRHltTjJRekIyMnFSbWdWV2t4ZEVhcC9HcFB1SklBV20wR1NxdVJZeU9XVk56NjV6cE5kMkR6dXhIRS9rWUViT0lYWFQ2L1dOOUQ3YjhXM2MiLCJtYWMiOiJkZGU0NjVlMjI3YjQ5M2IyN2ZmYjViNDJjMjQ5MmYwMmNlODQ1YmI1MjBmNjdiMWU1MDRmNmJjNTliZmM3ZjVmIiwidGFnIjoiIn0%3D_pk_id.63.7c30=2e62cc6bbd5a3ea5.1749294477.; _pk_ses.63.7c30=1; _pk_id.64.7c30=bf2ae09285e43e0f.1749294478.; _pk_ses.64.7c30=1; XSRF-TOKEN=eyJpdiI6IlV2MEVNL3lUa" ] "cf-ipcountry" => array:1 [ 0 => "US" ] "cf-connecting-ip" => array:1 [ 0 => "216.73.216.227" ] "cdn-loop" => array:1 [ 0 => "cloudflare; loops=1" ] "sec-fetch-mode" => array:1 [ 0 => "navigate" ] "sec-fetch-site" => array:1 [ 0 => "none" ] "accept" => array:1 [ 0 => "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7" ] "user-agent" => array:1 [ 0 => "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)" ] "upgrade-insecure-requests" => array:1 [ 0 => "1" ] "sec-ch-ua-platform" => array:1 [ 0 => ""Windows"" ] "sec-ch-ua-mobile" => array:1 [ 0 => "?0" ] "sec-ch-ua" => array:1 [ 0 => ""Chromium";v="130", "HeadlessChrome";v="130", "Not?A_Brand";v="99"" ] "cache-control" => array:1 [ 0 => "no-cache" ] "pragma" => array:1 [ 0 => "no-cache" ] "accept-encoding" => array:1 [ 0 => "gzip, br" ] "cf-ray" => array:1 [ 0 => "94bfb072fdd01068-ORD" ] "priority" => array:1 [ 0 => "u=0, i" ] "sec-fetch-dest" => array:1 [ 0 => "document" ] "sec-fetch-user" => array:1 [ 0 => "?1" ] "cf-visitor" => array:1 [ 0 => "{"scheme":"https"}" ] "connection" => array:1 [ 0 => "close" ] "x-forwarded-proto" => array:1 [ 0 => "https" ] "x-forwarded-for" => array:1 [ 0 => "216.73.216.227, 172.69.58.185" ] "x-server-addr" => array:1 [ 0 => "154.12.239.204" ] "host" => array:1 [ 0 => "receivinghelpdesk.com" ] ]
        request_server
        0 of 0
        array:56 [ "USER" => "runcloud" "HOME" => "/home/runcloud" "SCRIPT_NAME" => "/ask/index.php" "REQUEST_URI" => "/ask/what-is-the-difference-between-prvc-and-simv" "QUERY_STRING" => "" "REQUEST_METHOD" => "GET" "SERVER_PROTOCOL" => "HTTP/1.0" "GATEWAY_INTERFACE" => "CGI/1.1" "REDIRECT_URL" => "/ask/what-is-the-difference-between-prvc-and-simv" "REMOTE_PORT" => "49398" "SCRIPT_FILENAME" => "/home/runcloud/webapps/ReceivingHelpDesk/ask/index.php" "SERVER_ADMIN" => "you@example.com" "CONTEXT_DOCUMENT_ROOT" => "/home/runcloud/webapps/ReceivingHelpDesk/" "CONTEXT_PREFIX" => "" "REQUEST_SCHEME" => "http" "DOCUMENT_ROOT" => "/home/runcloud/webapps/ReceivingHelpDesk/" "REMOTE_ADDR" => "172.69.58.185" "SERVER_PORT" => "80" "SERVER_ADDR" => "127.0.0.1" "SERVER_NAME" => "receivinghelpdesk.com" "SERVER_SOFTWARE" => "Apache/2.4.63 (Unix) OpenSSL/1.1.1f" "SERVER_SIGNATURE" => "" "LD_LIBRARY_PATH" => "/RunCloud/Packages/apache2-rc/lib" "PATH" => "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" "HTTP_COOKIE" => "_pk_id.63.7c30=2e62cc6bbd5a3ea5.1749294477.; _pk_ses.63.7c30=1; _pk_id.64.7c30=bf2ae09285e43e0f.1749294478.; _pk_ses.64.7c30=1; XSRF-TOKEN=eyJpdiI6IlV2MEVNL3lUanRNbFBWM01QTWlVRWc9PSIsInZhbHVlIjoiRHYzNnAxc2NoTnhyV1ZKdUVaVDVvVHdRZi9Zb21xMGFsb2RVUzVKRWZwLzVzYndGVE5aR0dGbjE2UytqeDh1QisxaVdTTHZaYS9aTzRiWGowTjV2eS9hbDRJV0h0ck5ENHRPTCsySzFjY0pBejl0UWtZSjlhaG1DVUdjYmhxNFoiLCJtYWMiOiJiN2UyYjUwN2ZhNDIyNGNjMTc2MjcyMTVhY2ZmNDgwMGVjZDNlNDdmNWQxYzAzM2JmNWQ0MWIzYzdhMjNkZjg1IiwidGFnIjoiIn0%3D; askhelpdesk_session=eyJpdiI6Im94UWt0WjQrNmlaZmxwN21MVzRhZGc9PSIsInZhbHVlIjoiZjNWcGlmUGx2M3JPTlRkTVFlRndxbDc5V3pWRFB6bmV0MDNiVmc0R3V1Z2xBRCtaRHltTjJRekIyMnFSbWdWV2t4ZEVhcC9HcFB1SklBV20wR1NxdVJZeU9XVk56NjV6cE5kMkR6dXhIRS9rWUViT0lYWFQ2L1dOOUQ3YjhXM2MiLCJtYWMiOiJkZGU0NjVlMjI3YjQ5M2IyN2ZmYjViNDJjMjQ5MmYwMmNlODQ1YmI1MjBmNjdiMWU1MDRmNmJjNTliZmM3ZjVmIiwidGFnIjoiIn0%3D_pk_id.63.7c30=2e62cc6bbd5a3ea5.1749294477.; _pk_ses.63.7c30=1; _pk_id.64.7c30=bf2ae09285e43e0f.1749294478.; _pk_ses.64.7c30=1; XSRF-TOKEN=eyJpdiI6IlV2MEVNL3lUa" "HTTP_CF_IPCOUNTRY" => "US" "HTTP_CF_CONNECTING_IP" => "216.73.216.227" "HTTP_CDN_LOOP" => "cloudflare; loops=1" "HTTP_SEC_FETCH_MODE" => "navigate" "HTTP_SEC_FETCH_SITE" => "none" "HTTP_ACCEPT" => "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7" "HTTP_USER_AGENT" => "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)" "HTTP_UPGRADE_INSECURE_REQUESTS" => "1" "HTTP_SEC_CH_UA_PLATFORM" => ""Windows"" "HTTP_SEC_CH_UA_MOBILE" => "?0" "HTTP_SEC_CH_UA" => ""Chromium";v="130", "HeadlessChrome";v="130", "Not?A_Brand";v="99"" "HTTP_CACHE_CONTROL" => "no-cache" "HTTP_PRAGMA" => "no-cache" "HTTP_ACCEPT_ENCODING" => "gzip, br" "HTTP_CF_RAY" => "94bfb072fdd01068-ORD" "HTTP_PRIORITY" => "u=0, i" "HTTP_SEC_FETCH_DEST" => "document" "HTTP_SEC_FETCH_USER" => "?1" "HTTP_CF_VISITOR" => "{"scheme":"https"}" "HTTP_CONNECTION" => "close" "HTTP_X_FORWARDED_PROTO" => "https" "HTTP_X_FORWARDED_FOR" => "216.73.216.227, 172.69.58.185" "HTTP_X_SERVER_ADDR" => "154.12.239.204" "HTTP_HOST" => "receivinghelpdesk.com" "HTTPS" => "on" "REDIRECT_STATUS" => "200" "REDIRECT_HTTPS" => "on" "FCGI_ROLE" => "RESPONDER" "PHP_SELF" => "/ask/index.php" "REQUEST_TIME_FLOAT" => 1749294482.4196 "REQUEST_TIME" => 1749294482 ]
        request_cookies
        0 of 0
        array:6 [ "_pk_id_63_7c30" => null "_pk_ses_63_7c30" => null "_pk_id_64_7c30" => null "_pk_ses_64_7c30" => null "XSRF-TOKEN" => "DwF7byTFtXA3xHWwEEmkeHIXVXSsNiEQaNH4I99d" "askhelpdesk_session" => "2XKpEQT42LX8wEJH2d0okgO19H5heEtj8jgIIPuW" ]
        response_headers
        0 of 0
        array:7 [ "content-type" => array:1 [ 0 => "text/html; charset=UTF-8" ] "cache-control" => array:1 [ 0 => "private, must-revalidate" ] "date" => array:1 [ 0 => "Sat, 07 Jun 2025 11:08:02 GMT" ] "pragma" => array:1 [ 0 => "no-cache" ] "expires" => array:1 [ 0 => -1 ] "set-cookie" => array:2 [ 0 => "XSRF-TOKEN=eyJpdiI6IkJ2QkxhempaMlJFQmdSbmtSZWVoN3c9PSIsInZhbHVlIjoidHA2bUt0NHRGUWFXV0hQL3BNQjNNRzNVSmd0UXJlRXFrZk94b2l6VDVXamlKSTcxL1ZVYUFEckpKMlAxdkhRWnJQa2JMd1ZjOEZlOGxDRmUyMy9nS1p6aFUwdlFBZ2c0bGFQQmRYcWM2Y2JGYXcySDJQc0NESWF6L1VHSjREQW8iLCJtYWMiOiI2MzU2NDllMWY3MDI1YjhhYjY5OGIwY2Q0NzY1YjE3ZGI1YzI4NTVhMWEyODk4NzdhMDA1NTZmM2IwNjgyNmU3IiwidGFnIjoiIn0%3D; expires=Sat, 07-Jun-2025 13:08:08 GMT; Max-Age=7200; path=/; samesite=laxXSRF-TOKEN=eyJpdiI6IkJ2QkxhempaMlJFQmdSbmtSZWVoN3c9PSIsInZhbHVlIjoidHA2bUt0NHRGUWFXV0hQL3BNQjNNRzNVSmd0UXJlRXFrZk94b2l6VDVXamlKSTcxL1ZVYUFEckpKMlAxdkhRWnJQa2JMd" 1 => "askhelpdesk_session=eyJpdiI6ImlIVVVrejd5cFl3SzZOZEwybytPaWc9PSIsInZhbHVlIjoiTjBOc1h3V0tDdTlKWEtYY0NDdEh6QU1HYTZPSzNrSWIvc0RpazFIRlZWbGJaL1JaZGRCeDl5Vy9PdU9rT1BHSDRGVnoyakdjQzVqSlFLeFZnenV2b2drZ3hjVmV1UGNJTWNySDdIZ1Z2THV3SmZrMWIyQVhnUmhVZytsMDN0VDUiLCJtYWMiOiJlZTQ4YjJhMWZlNWQ2YjVmYWVjOWM5NWY1MjYzMjk4YjhiYjYyNTEyMDUwYTllYTY0ZWIyYzNlNTM5NmQ2YTAxIiwidGFnIjoiIn0%3D; expires=Sat, 07-Jun-2025 13:08:08 GMT; Max-Age=7200; path=/; httponly; samesite=laxaskhelpdesk_session=eyJpdiI6ImlIVVVrejd5cFl3SzZOZEwybytPaWc9PSIsInZhbHVlIjoiTjBOc1h3V0tDdTlKWEtYY0NDdEh6QU1HYTZPSzNrSWIvc0RpazFIRlZWbGJaL1JaZGRCeDl5Vy9PdU9rT1BH" ] "Set-Cookie" => array:2 [ 0 => "XSRF-TOKEN=eyJpdiI6IkJ2QkxhempaMlJFQmdSbmtSZWVoN3c9PSIsInZhbHVlIjoidHA2bUt0NHRGUWFXV0hQL3BNQjNNRzNVSmd0UXJlRXFrZk94b2l6VDVXamlKSTcxL1ZVYUFEckpKMlAxdkhRWnJQa2JMd1ZjOEZlOGxDRmUyMy9nS1p6aFUwdlFBZ2c0bGFQQmRYcWM2Y2JGYXcySDJQc0NESWF6L1VHSjREQW8iLCJtYWMiOiI2MzU2NDllMWY3MDI1YjhhYjY5OGIwY2Q0NzY1YjE3ZGI1YzI4NTVhMWEyODk4NzdhMDA1NTZmM2IwNjgyNmU3IiwidGFnIjoiIn0%3D; expires=Sat, 07-Jun-2025 13:08:08 GMT; path=/XSRF-TOKEN=eyJpdiI6IkJ2QkxhempaMlJFQmdSbmtSZWVoN3c9PSIsInZhbHVlIjoidHA2bUt0NHRGUWFXV0hQL3BNQjNNRzNVSmd0UXJlRXFrZk94b2l6VDVXamlKSTcxL1ZVYUFEckpKMlAxdkhRWnJQa2JMd" 1 => "askhelpdesk_session=eyJpdiI6ImlIVVVrejd5cFl3SzZOZEwybytPaWc9PSIsInZhbHVlIjoiTjBOc1h3V0tDdTlKWEtYY0NDdEh6QU1HYTZPSzNrSWIvc0RpazFIRlZWbGJaL1JaZGRCeDl5Vy9PdU9rT1BHSDRGVnoyakdjQzVqSlFLeFZnenV2b2drZ3hjVmV1UGNJTWNySDdIZ1Z2THV3SmZrMWIyQVhnUmhVZytsMDN0VDUiLCJtYWMiOiJlZTQ4YjJhMWZlNWQ2YjVmYWVjOWM5NWY1MjYzMjk4YjhiYjYyNTEyMDUwYTllYTY0ZWIyYzNlNTM5NmQ2YTAxIiwidGFnIjoiIn0%3D; expires=Sat, 07-Jun-2025 13:08:08 GMT; path=/; httponlyaskhelpdesk_session=eyJpdiI6ImlIVVVrejd5cFl3SzZOZEwybytPaWc9PSIsInZhbHVlIjoiTjBOc1h3V0tDdTlKWEtYY0NDdEh6QU1HYTZPSzNrSWIvc0RpazFIRlZWbGJaL1JaZGRCeDl5Vy9PdU9rT1BH" ] ]
        session_attributes
        0 of 0
        array:4 [ "_token" => "DwF7byTFtXA3xHWwEEmkeHIXVXSsNiEQaNH4I99d" "_previous" => array:1 [ "url" => "https://receivinghelpdesk.com/ask/what-is-the-difference-between-prvc-and-simv" ] "_flash" => array:2 [ "old" => [] "new" => [] ] "PHPDEBUGBAR_STACK_DATA" => [] ]