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  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher-id">JPSIM</journal-id>
      <journal-title-group>
        <journal-title>Journal of Pakistan Society of Internal Medicine</journal-title>
        <abbrev-title>J Pak Soc Intern Med</abbrev-title>
      </journal-title-group>
      <issn publication-format="print">2709-8729</issn>
      <issn publication-format="electronic">2710-0804</issn>
      <publisher>
        <publisher-name>Pakistan Society of Internal Medicine</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.70302/jpsim.v7i2.2631</article-id>
      <article-id pub-id-type="publisher-id">jpsim.v7i2.2631</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Original Research</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Factors Associated with Postoperative Pain among Patients after Thoracic Surgery in a Tertiary Care Teaching Hospital of Punjab, Pakistan</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Tariq</surname>
            <given-names>Anum Arooj</given-names>
          </name>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <contrib contrib-type="author" corresp="yes">
          <name>
            <surname>Nabi</surname>
            <given-names>Muhammad Shoaib</given-names>
          </name>
          <email>one111@hotmail.com</email>
          <xref ref-type="aff" rid="aff1"/>
          <xref ref-type="corresp" rid="cor1">*</xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Sarwar</surname>
            <given-names>Zeeshan</given-names>
          </name>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
      </contrib-group>
      <aff id="aff1">
        <institution>Services Institute of Medical Sciences, Services Hospital, Lahore, Pakistan</institution>
      </aff>
      <author-notes>
        <corresp id="cor1">*Correspondence: Muhammad Shoaib Nabi (one111@hotmail.com)</corresp>
      </author-notes>
      <pub-date date-type="pub" publication-format="electronic" iso-8601-date="2026-06-03">
        <day>03</day>
        <month>06</month>
        <year>2026</year>
      </pub-date>
      <pub-date date-type="collection" publication-format="electronic">
        <year>2026</year>
      </pub-date>
      <volume>7</volume>
      <issue>2</issue>
      <fpage>155</fpage>
      <lpage>159</lpage>
      <history>
        <date date-type="received" iso-8601-date="2026-01-04">
          <day>04</day>
          <month>01</month>
          <year>2026</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2026-04-12">
          <day>12</day>
          <month>04</month>
          <year>2026</year>
        </date>
        <date date-type="accepted" iso-8601-date="2026-05-04">
          <day>04</day>
          <month>05</month>
          <year>2026</year>
        </date>
      </history>
      <permissions>
        <copyright-statement>Copyright © 2026 The Author(s)</copyright-statement>
        <copyright-year>2026</copyright-year>
        <copyright-holder>The Author(s)</copyright-holder>
        <ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/>
        <license license-type="open-access" xlink:href="https://creativecommons.org/licenses/by/4.0/">
          <ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0/</ali:license_ref>
          <license-p>This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p>
        </license>
      </permissions>
      <self-uri xlink:href="https://psimj.com/article/jpsim.v7i2.2631" content-type="text/html"/>
      <self-uri xlink:href="https://psimj.com/article/jpsim.v7i2.2631.pdf" content-type="application/pdf"/>
      <abstract>
        <sec>
          <title>Objective</title>
          <p>To identify factors associated with postoperative pain severity among thoracic surgery patients at a tertiary care hospital in Punjab, Pakistan.</p>
        </sec>
        <sec>
          <title>Methodology</title>
          <p>This cross-sectional study included 284 patients who underwent thoracic surgery between January-September 2025. Pain was assessed using Visual Analog Scale (VAS) at 24, 48, and 72 hours postoperatively. Multiple logistic regression identified independent predictors of severe pain.</p>
        </sec>
        <sec>
          <title>Results</title>
          <p>Mean age was 52.3±14.6 years; 64.1% were male. Moderate to severe pain (VAS≥4) affected 68.3% at 24 hours, decreasing to 42.6% at 72 hours. Open thoracotomy (OR=4.23, 95% CI: 2.45-7.31, p180 minutes (OR=2.89, p</p>
        </sec>
        <sec>
          <title>Conclusion</title>
          <p>Open thoracotomy, prolonged surgery, smoking, and obesity independently predict severe postoperative pain. Epidural analgesia and multimodal protocols can significantly improve outcomes in thoracic surgery patients.</p>
        </sec>
      </abstract>
      <kwd-group xml:lang="en" kwd-group-type="author-keywords">
        <title>Keywords</title>
        <kwd>Postoperative pain</kwd>
        <kwd>thoracic surgery</kwd>
        <kwd>pain management</kwd>
        <kwd>epidural analgesia</kwd>
        <kwd>Visual Analog Scale</kwd>
        <kwd>Pakistan</kwd>
      </kwd-group>
    </article-meta>
  </front>
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  <back>
    <notes notes-type="ethics-statement">
      <title>Ethics Statement</title>
      <p>Ethics committee: Institutional Review Board, Services Institute of Medical Sciences, Lahore, Pakistan. Approval number: IRB/2025/1565/SIMS, dated March 26, 2025.</p>
    </notes>
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  </back>
</article>
