Blood Gas Analysis
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Pitted Keratolysis A 12-year-old girl presented with malodorous pits over both soles associated with hyperhidrosis for the past three months. On cutaneous examination, multiple yellowish-brown circular crateriform pits (2-5 mm) with punched out appearance were seen over the ventral aspect of the great toe, the ball, and heel of both feet; the pits coalesced into large, shallow macerated furrows with focal erosion (Fig. 1). A characteristic sparing of the non-pressure bearing areas was noted. Potassium hydroxide mount of skin scrapings showed no fungal elements. Based on the characteristic history and cutaneous findings, a diagnosis of pitted keratolysis was made. She was treated with topical clindamycin and advised to avoid occlusive footwear; the lesions resolved in 3 weeks. Pitted keratolysis is a bacterial infection of the plantar stratum corneum, predominating the weight-bearing areas of the soles, commonly caused by gram-positive Kytococcus sedentarius. Although a straight forward diagnosis clinically, differential diagnosis include plantar warts (absense of skin markings), tinea pedis (erythema, scaling with fungal elements on KOH mount), and punctate keratoderma (tiny hard rounded bumps). Topical antibiotics and adequate preventive measures are recommended. ABHEEK SIL*
AND
Fig. 1 Pitted keratolysis characterized by multiple crateriform pits with punched out appearance over the pressure-bearing areas of both feet.
Venereology, and Leprosy, RG Kar Medical College, Kolkata, West Bengal, India. *[email protected]
DIBYENDU BIKASH BHANJA Department of Dermatology,
BOOK
REVIEW
Blood Gas Analysis
analysis are covered.
SHYAM SUNDER T AND ROOP KISHEN M/s. Paras Medical Publisher, Andhra Pradesh, India. Pages: 425; Price: Rs. 625/-.
Print quality is good and language is simple to understand. The case studies at the end of the book improve understanding of application of knowledge of acid-base analysis in clinical scenarios. Overall, it is a valuable addition to books for physicians, pediatricians and intensivists and particularly, residents in these branches.
URMILA JHAMB
This book very clearly explains the basics of acid base equilibrium, abnormalities of acid base in the body and compensatory mechanisms for these abnormalities. Topics are well classified with an index in the beginning, and most aspects of blood gas
INDIAN PEDIATRICS
In-charge, Pediatric ICU and Head, Department of Pediatrics, Maulana Azad Medical College, Delhi. [email protected]
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VOLUME 57__SEPTEMBER 15, 2020
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