Case Study Undergraduate 678 words

Diabetic Ketoacidosis: Case Study Analysis and Diagnosis

~4 min read

Abstract

This case study analyzes a patient's reported symptoms and laboratory results to identify a probable diagnosis of diabetic ketoacidosis (DKA). The paper begins by reviewing which lab values fall within normal ranges and which fall outside them, noting critical abnormalities in blood glucose, pH, bicarbonate, ketones, and anion gap. It then presents DKA as the most likely diagnosis, supported by evidence that the patient meets all standard diagnostic criteria — hyperglycemia, metabolic acidosis, and ketonuria — and reports six of the eight classic DKA symptoms. The analysis draws on established clinical thresholds to justify the diagnosis with reference to peer-reviewed emergency medicine and laboratory medicine sources.

📝 How to Write This Type of Paper Writing guide — click to expand

▼

What makes this paper effective

The paper systematically distinguishes normal from abnormal lab values before drawing diagnostic conclusions, giving the argument a clear evidential foundation.
Each of the three diagnostic pillars — hyperglycemia, acidosis, and ketosis — receives its own dedicated paragraph with explicit reference to clinical thresholds, making the reasoning transparent and verifiable.
The anion gap calculation is shown step by step (139 − [5.6 + 112] = 21.4 mEq/L), demonstrating quantitative clinical reasoning rather than relying solely on qualitative description.

Key academic technique demonstrated

The paper demonstrates criteria-based diagnostic reasoning: it first identifies the relevant clinical thresholds from peer-reviewed sources, then systematically checks the patient's values against each threshold. This technique — common in clinical case studies — shows how evidence maps onto diagnostic categories rather than asserting a diagnosis without proof.

Structure breakdown

The paper follows a three-part clinical analysis structure: (1) symptom and lab-value review, separating normal from abnormal findings; (2) hypothesis generation, proposing DKA as the probable diagnosis and contextualizing it within current epidemiology; and (3) diagnostic justification, methodically confirming hyperglycemia, acidosis, and ketonuria against published criteria. A full reference list closes the paper.

Introduction: Symptom Overview

The reported nausea, vomiting, and abdominal pain may indicate a gastrointestinal disorder, but combined with the patient's diabetes, unusual thirst, constant urination, and fatigue, the symptoms are more indicative of an endocrine disorder (Lippincott Williams & Wilkins, 2006).

Review of Lab Results

Some of the patient's lab results fall within the normal range: BUN of 16 mg/dL (normal is 8–25 mg/dL); creatinine of 1.3 mg/dL (normal is 0.5–1.7 mg/dL); sodium of 139 mEq/L (normal is 135–145 mEq/L); blood pressure of 90/60 (normal is less than 120/80); and temperature of 99.1°F (Chernecky & Berger, 2001; Pagana & Pagana, 2003).

Other lab results fall outside the normal range: glucose of 420 mg/dL is very high (normal is 60–110 mg/dL); 4+ glucose and 3+ ketones in urine are very high (normal is no glucose or ketones present); pH of 7.12 is low (normal is 7.35–7.45); PCO2 of 17 mmHg is low (normal is 35–45 mmHg); chloride of 112 mEq/L is high (normal is 98–106 mEq/L); bicarbonate of 5.6 mEq/L is low (normal is above 18 mEq/L); pulse of 136 is high (normal is 60–100); and respiratory rate of 36 is high (normal is 12–20) (Chernecky & Berger, 2001; Kitabchi, Umpierrez, Miles, & Fisher, 2009; Pagana & Pagana, 2003).

Possible Diagnosis

A possible diagnosis for this patient is diabetic ketoacidosis (DKA), which is one of the most serious complications of diabetes and is often seen in emergency departments (Wolfson et al., 2009). Previously, DKA was considered primarily a complication of type 1 diabetes, but since the late 1990s it has increasingly been found as a complication of type 2 diabetes, particularly among obese African Americans (Kitabchi et al., 2009; Wolfson et al., 2009).

Typical symptoms of DKA include polyuria (excessive urination), polydipsia (excessive thirst), vomiting, nausea, abdominal pain, weight loss, weakness, and blurred vision (Wolfson et al., 2009). The patient reports six of these eight symptoms.

2 Locked Sections · 330 words remaining

Justification of Diagnosis · 210 words

"Hyperglycemia, acidosis, and ketosis confirmed against criteria"

References · 120 words

"Clinical and laboratory medicine sources cited"

You’re 42% through this paper. Sign up to read the remaining 2 sections.

130,000+ paper examples AI writing assistant Citation generator Cancel anytime

Key Concepts in This Paper

Diabetic Ketoacidosis Hyperglycemia Metabolic Acidosis Anion Gap Ketonuria Blood pH Serum Bicarbonate Type 2 Diabetes Urinalysis Clinical Thresholds