Can fever as part of a systemic inflammatory response be accompanied by nausea and salivary vomiting?

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Sí, la fiebre como parte de una respuesta inflamatoria sistémica puede acompañarse de náuseas y vómito

La fiebre asociada con respuesta inflamatoria sistémica frecuentemente se acompaña de náuseas y vómito como manifestaciones gastrointestinales inespecíficas del proceso inflamatorio sistémico.

Mecanismo Fisiopatológico

La respuesta inflamatoria sistémica desencadena una cascada de mediadores inflamatorios (prostaglandina E2, citoquinas) que no solo afectan el centro termorregulador hipotalámico produciendo fiebre, sino que también activan centros del vómito y producen síntomas gastrointestinales 1. Estos síntomas gastrointestinales son parte integral del síndrome de respuesta inflamatoria sistémica (SIRS) y no necesariamente indican patología gastrointestinal primaria.

Evidencia Clínica Específica

  • En infecciones respiratorias virales agudas: El 29.4% de pacientes presentaron síntomas gastrointestinales, incluyendo náuseas y vómito, siendo estos síntomas significativamente asociados con mayor carga de síntomas y severidad de la enfermedad 2

  • En fiebre mediterránea familiar: Los pacientes presentan fiebre recurrente acompañada de náuseas, vómito y dolor abdominal como manifestaciones de la respuesta inflamatoria sistémica 3

  • Cuando hay fiebre con náuseas y vómito: Se debe descartar primero enfermedades potencialmente graves (hipertensión intracraneal, meningitis, obstrucción intestinal) especialmente si hay signos generales de alarma 4

Características Clínicas Importantes

Los síntomas gastrointestinales en el contexto de SIRS incluyen:

  • Náuseas
  • Vómito (que puede incluir saliva excesiva)
  • Dolor abdominal
  • Salivación excesiva 5

Punto crítico: Estos síntomas gastrointestinales NO siguen necesariamente el tropismo conocido de los patógenos, sugiriendo que son manifestaciones inespecíficas de la respuesta inflamatoria sistémica más que efectos directos del patógeno 2.

Evaluación Diagnóstica

Cuando un paciente presenta fiebre con náuseas y vómito:

  1. Evaluar criterios de SIRS: taquicardia, taquipnea, fiebre/hipotermia, leucocitosis 6, 7

  2. Biomarcadores adjuntos:

    • Procalcitonina sérica (>0.5 ng/mL sugiere infección bacteriana)
    • Niveles más altos correlacionan con severidad (SIRS: 0.6-2.0 ng/mL; sepsis severa: 2-10 ng/mL) 6

  3. Descartar causas graves: Si hay fiebre alta con náuseas/vómito persistentes, investigar meningitis, hipertensión intracraneal, abdomen agudo 4

  4. Buscar fuentes ocultas de infección: otitis media, úlceras por decúbito, abscesos perineales 6

Caveat Clínico Importante

La presencia de síntomas gastrointestinales en pacientes con fiebre debe iniciar búsqueda de patógenos respiratorios, incluso si el síntoma respiratorio no es la queja principal 2. No asumir automáticamente que náuseas/vómito indican patología gastrointestinal primaria cuando hay fiebre presente.

References

1
Research

Fever and hypothermia in systemic inflammation.

Handbook of clinical neurology, 2018

3
Research

A rare cause of fever in an adult: a case of familial Mediterranean fever.

International medical case reports journal, 2018

4
Research

[Nausea: Current view].

Presse medicale (Paris, France : 1983), 2019

5
Research

[On the subject of the cyclic vomiting syndrome].

Archives de pediatrie : organe officiel de la Societe francaise de pediatrie, 2003

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