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Diagnosing Acidosis and Alkalosis

Diagnosing Acidosis and Alkalosis

Diagnosing acid-base imbalances involves systematically analyzing arterial blood samples, focusing on three key measurements: pH, bicarbonate (HCO3−) concentration, and carbon dioxide partial pressure (PCO2). This analysis follows a four-step process that helps identify the imbalance's underlying cause and nature.
First, the pH level is assessed to determine whether the blood pH is normal (7.35–7.45), low (acidosis), or high (alkalosis).
Next, the PCO2 and HCO3− values are examined to...

Disorders of Acid-Base Balance

Disorders of Acid-Base Balance

The human body maintains a precise pH range of arterial blood between 7.35 and 7.45. Deviations result in either acidosis (pH < 7.35) or alkalosis (pH > 7.45). These conditions are further classified as respiratory or metabolic disorders based on their underlying cause.
Respiratory Acidosis and Alkalosis
Respiratory acidosis occurs due to an increase in the partial pressure of carbon dioxide PCO2 in the blood. It often arises from shallow breathing or impaired gas exchange caused by...

Bronsted-Lowry Acids and Bases

Bronsted-Lowry Acids and Bases

The acid-base reaction class has been studied for quite some time. In 1680, Robert Boyle reported traits of acid solutions that included their ability to dissolve many substances, to change the colors of certain natural dyes, and to lose these traits after coming in contact with alkali (base) solutions. In the eighteenth century, it was recognized that acids have a sour taste, react with limestone to liberate a gaseous substance (now known to be CO2), and interact with alkalis to form neutral...

Bicarbonate-Carbonic Acid Buffer

Bicarbonate-Carbonic Acid Buffer

The carbonic acid-bicarbonate buffer system is critical for maintaining the body's pH balance. It operates on the equilibrium:

Acid-Base Balance

Acid-Base Balance

The human body maintains a narrow pH range regulated through acid-base balance. This balance is crucial as changes in the hydrogen ion concentration can disrupt cell membrane stability, alter protein structures, and change enzyme activities. The normal pH of arterial blood is 7.4, venous blood and interstitial fluid is 7.35, and intracellular fluid averages 7.0.
When the pH of arterial blood rises above 7.45, it results in a condition called alkalosis. Conversely, a drop below 7.35 leads to...

Blood Studies I: ABG and VBG

Blood Studies I: ABG and VBG

Blood studies are critical in the medical field, enabling healthcare professionals to assess a patient's health status accurately. This page will focus on two significant blood studies: Arterial Blood Gas (ABG) and Venous Blood Gas (VBG).
Arterial Blood Gas (ABG)
Arterial Blood Gas (ABG) studies are crucial for assessing the lungs' ability to supply oxygen and remove carbon dioxide, reflecting the patient's ventilation status. They also help understand the kidneys' capacity to reabsorb or...

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Related Experiment Video

Updated: Jul 17, 2026

Establishment of an Extracellular Acidic pH Culture System

Establishment of an Extracellular Acidic pH Culture System

Published on: November 19, 2017

Metabolic alkalosis, bedside and bench.

Melvin E Laski¹, Sandra Sabatini

¹Department of Internal Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79413, USA. melvin.laski@ttuhsc.edu

Seminars in Nephrology

|February 6, 2007

Summary

This review synthesizes historical clearance studies and recent findings on metabolic alkalosis. It examines renal acid-base transport regulation and clinical considerations for this acid-base disorder.

Area of Science:

Nephrology
Renal Physiology
Acid-Base Balance

Background:

Understanding of metabolic alkalosis relies on historical clearance studies.
Recent advancements have expanded knowledge on renal acid-base transport.

Purpose of the Study:

To review historical and recent contributions to metabolic alkalosis understanding.
To explore the regulation of renal acid-base transport.
To consider clinical aspects of metabolic alkalosis.

Main Methods:

Review of existing literature, including historical clearance studies.
Synthesis of recent research on hormonal and ionic regulation of renal transport.
Analysis of clinical presentations and management.

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Establishment of an Extracellular Acidic pH Culture System

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Construction and Setup of a Bench-scale Algal Photosynthetic Bioreactor with Temperature, Light, and pH Monitoring for Kinetic Growth Tests

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Main Results:

Historical clearance studies provide foundational data on metabolic alkalosis.
Mineralocorticoids, angiotensin, endothelin, nitric oxide, and potassium balance significantly influence renal acid-base transport.
Clinical manifestations and management strategies are discussed.

Conclusions:

A comprehensive understanding of metabolic alkalosis integrates historical data with recent findings on regulatory mechanisms.
Effective management requires consideration of hormonal and electrolyte influences on renal function.