OCD Key Terms

Obsessive-Compulsive Disorder (OCD) and Mental Health Terminology

  • Key Mental Health Definitions:

    • Impulsive Behaviors: The tendency to act spontaneously without thinking about future consequences.
    • Compulsive Behaviors: A repeating action that a person feels forced to perform, even though they recognize that it does not match their goals or causes them distress.
    • Milieu Therapy: A mental health treatment approach that utilizes a structured, supportive physical and social environment—referred to as a therapeutic community—to help individuals develop healthier behaviors and social skills.
    • Psychotherapy: A collaborative treatment modality where a patient speaks with a licensed mental health professional to identify and modify troubling thoughts, feelings, and behaviors.
    • Cognitive Behavioral Therapy (CBT): A structured, short-term form of psychotherapy that focuses on teaching individuals how their thoughts, feelings, and behaviors continuously interact and affect each other.

  • The Obsessive-Compulsive Cycle:

    • The continuous cycle of OCD follows a specific step-by-step sequence:         Obsession→Anxiety→Compulsion→Temporary Relief→Obsession Returns\text{Obsession} \rightarrow \text{Anxiety} \rightarrow \text{Compulsion} \rightarrow \text{Temporary Relief} \rightarrow \text{Obsession Returns}

Cirrhosis and Clinical Definitions

  • Pathophysiological Terms:
    • Portal Hypertension: High blood pressure inside the portal venous system, which is the network of veins that carry blood from the digestive organs to the liver.
    • Ascites: The buildup of excess fluid within the abdominal cavity, specifically lining the abdomen and surrounding the internal organs.
    • Varices: Abnormally enlarged, twisted blood vessels located between tissues.
    • Thrombocytopenia: A medical condition characterized by an abnormally low blood platelet count.
    • Peritonitis: A dangerous and life-threatening inflammation of the peritoneum, which is the thin tissue lining the inner wall of the abdomen and covering the abdominal organs.
    • Encephalopathy: A term used for any disease, damage, or malfunction of the brain that alters how it works.
    • Icterus (Jaundice): The yellowish discoloration of the skin, mucous membranes, and the whites of the eyes caused by a buildup of bilirubin in the blood.
    • Asterixis (Flapping Tremor / Liver Flap): A neurological sign defined as a brief, sudden lapse in muscle tone when trying to maintain a posture.
    • Angioma: A common non-cancerous skin growth made up of small blood vessels or lymphatic vessels.
    • Paracentesis: A medical procedure that uses a needle and a catheter to drain excess fluid (ascites) from the peritoneal cavity in the abdomen.

Hepatic Physiology and Diagnostic Evaluation

  • Main Functions of the Liver:

    • Filtering Blood: Filtering circulating blood throughout the body.
    • Producing Bile: Generating bile necessary for digestion.
    • Storing Energy: Storing energy substrate for metabolic demands.
    • Regulating Blood Clotting: Synthesizing factors that regulate blood coagulation.
    • Metabolizing Nutrients: Processing nutrients absorbed from digestion.

  • Blood Tests Indicating Liver Function:

    • Albumin Test: Measures albumin, a protein made by the liver. A low level could mean the liver is damaged. Normal reference range: 3.5–5 g/dL3.5\text{--}5\,g/dL.
    • Bilirubin Test: Measures total and direct bilirubin, which are waste products created from red blood cell breakdown. Normal reference range: 0.1–6.2 mg/dL0.1\text{--}6.2\,mg/dL.
    • Prothrombin Time (PT) / INR Test: Measures how long it takes for blood to clot. A prolonged clotting time indicates a risk of bleeding out. Normal reference range for PT: 9.4–12.5 seconds9.4\text{--}12.5\,\text{seconds}.

  • Common Hepatotoxic Medications:

    • Acetaminophen: Excessive consumption can cause acute liver damage.
    • Statins: Can occasionally elevate liver enzymes, signaling mild stress on the organ.

The Renin-Angiotensin-Aldosterone System (RAAS)

  • Systemic Trigger:

    • Initiated by a drop in blood pressure or blood volume (↓BP/Blood Volume\downarrow \text{BP} / \text{Blood Volume}).

  • Step-by-Step RAAS Cascade:

    • Renal Response: The kidneys sense reduced perfusion and release the hormone Renin.
    • Hepatic Precursor: The liver releases the precursor protein Angiotensinogen.
    • Conversion to Angiotensin I: Renin acts on Angiotensinogen to form Angiotensin I.
    • Pulmonary Conversion: The lungs produce Angiotensin-Converting Enzyme (ACE).
    • Conversion to Angiotensin II: ACE converts Angiotensin I into the biologically active hormone Angiotensin II.

  • Biological Effects of Angiotensin II:

    • Vascular Effect: Induces Vasoconstriction (narrowing of blood vessels).
    • Adrenal Effect: Acts on the Adrenal Cortex to stimulate release of the hormone Aldosterone.
    • Renal Effect: Aldosterone triggers Sodium (Na+Na^+) and Water (H2OH_2O) Retention in the kidneys.

  • Final Outcome:

    • Restoration and increase of overall blood pressure and fluid balance (↑Blood Pressure+Fluid Balance\uparrow \text{Blood Pressure} + \text{Fluid Balance}).